mirror of
https://github.com/aquasecurity/kube-bench.git
synced 2026-02-19 20:40:17 +00:00
Compare commits
142 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
|
|
4de7b2095a | ||
|
|
5eccb498c1 | ||
|
|
7ce327f1db | ||
|
|
8656945200 | ||
|
|
702107daff | ||
|
|
5fac7f626b | ||
|
|
27a1942bcc | ||
|
|
9f0f5567ae | ||
|
|
ea24d0e240 | ||
|
|
74f5c8b800 | ||
|
|
e2a97f49f5 | ||
|
|
b4000f677b | ||
|
|
86c6a27cc4 | ||
|
|
8a695eb8d1 | ||
|
|
e48c3dd7b5 | ||
|
|
ddb586d441 | ||
|
|
5568895095 | ||
|
|
d5ba5edca0 | ||
|
|
0e3dbfa985 | ||
|
|
e9ea1dbb74 | ||
|
|
c5dc28ee6f | ||
|
|
fa478ce238 | ||
|
|
1d8f80e846 | ||
|
|
a15e8acaa3 | ||
|
|
e47725299e | ||
|
|
e8562f2944 | ||
|
|
3a0ccc440c | ||
|
|
c683e93968 | ||
|
|
e75cd6bbc8 | ||
|
|
d8f041a826 | ||
|
|
7ea1d59bb1 | ||
|
|
89842dcaaa | ||
|
|
674d8e8bb7 | ||
|
|
4b4c1ce709 | ||
|
|
b85ec78a84 | ||
|
|
f6877e3c17 | ||
|
|
2751f87034 | ||
|
|
a9422a6623 | ||
|
|
f8b6f2fc19 | ||
|
|
c533d68bad | ||
|
|
5a3fd1d896 | ||
|
|
366e79ddda | ||
|
|
871027447f | ||
|
|
7027b6b2ec | ||
|
|
d8fc37649a | ||
|
|
0f8dfaf115 | ||
|
|
ed51191d7c | ||
|
|
2a8615befd | ||
|
|
ff9341a5d0 | ||
|
|
65c484e85a | ||
|
|
d2d3e72271 | ||
|
|
73e1377ce0 | ||
|
|
dc8f4d37f0 | ||
|
|
dc7441620f | ||
|
|
45afbd76c2 | ||
|
|
abfa7d9613 | ||
|
|
3db3f736f8 | ||
|
|
57132a69fd | ||
|
|
f297da6603 | ||
|
|
66a215189e | ||
|
|
72eee4b7a4 | ||
|
|
ee5e4aff51 | ||
|
|
2374e7b07f | ||
|
|
faeceb5dfa | ||
|
|
30217061ac | ||
|
|
445c1160cf | ||
|
|
57fba224fa | ||
|
|
a93b19f0c0 | ||
|
|
b17aa709b3 | ||
|
|
faa1b4be3d | ||
|
|
628999c9c5 | ||
|
|
13da372a87 | ||
|
|
38949874d1 | ||
|
|
39c29fb07a | ||
|
|
cc6c091b41 | ||
|
|
7efba2b94d | ||
|
|
a4b46f50de | ||
|
|
221ff4fd42 | ||
|
|
8c47d59e99 | ||
|
|
151efc3494 | ||
|
|
58a49da713 | ||
|
|
64c0492401 | ||
|
|
7a55d5d57c | ||
|
|
f353bc4cba | ||
|
|
1393449298 | ||
|
|
875fbc7f20 | ||
|
|
c3e3c4c31c | ||
|
|
292678a907 | ||
|
|
0c553cd2f6 | ||
|
|
92a18e7dfd | ||
|
|
ade7cef969 | ||
|
|
f8fe5ee173 | ||
|
|
fac90f756e | ||
|
|
63055a7332 | ||
|
|
dc0580cebe | ||
|
|
0918b41eca | ||
|
|
2b466ab239 | ||
|
|
55a18aed87 | ||
|
|
7f5a2eb78b | ||
|
|
18f8456abd | ||
|
|
8bc4daae10 | ||
|
|
7ad0f2fee6 | ||
|
|
276d30ad75 | ||
|
|
e1c6c80d02 | ||
|
|
34ef478b41 | ||
|
|
3ef3e9a861 | ||
|
|
d70459b77c | ||
|
|
20ad80577c | ||
|
|
456684462a | ||
|
|
c8cabc4b14 | ||
|
|
8c6915c478 | ||
|
|
9363cdf8ef | ||
|
|
b29ed6b6ed | ||
|
|
aa16551811 | ||
|
|
40cdc1bfbb | ||
|
|
e2e353a81a | ||
|
|
a727d73e8a | ||
|
|
76c25b2db2 | ||
|
|
ca8743c1f7 | ||
|
|
84f80b59b8 | ||
|
|
60dde65d72 | ||
|
|
124c57c6f4 | ||
|
|
e41755ba90 | ||
|
|
6de03bbd7d | ||
|
|
c2880848f0 | ||
|
|
968ee5814e | ||
|
|
29c8f16167 | ||
|
|
b0e49c8789 | ||
|
|
e38c829dbc | ||
|
|
8098489433 | ||
|
|
b43f58dcda | ||
|
|
dd6573f3ed | ||
|
|
0ff5dd0b8e | ||
|
|
124a8b3a5a | ||
|
|
c3b6871766 | ||
|
|
96c6b385ef | ||
|
|
9e41099cec | ||
|
|
0decc8a53f | ||
|
|
7aeb6c3977 | ||
|
|
7d0d8ca993 | ||
|
|
823f3e1064 | ||
|
|
fc72a8a620 |
36
.github/workflows/build.yml
vendored
36
.github/workflows/build.yml
vendored
@@ -14,56 +14,56 @@ on:
|
||||
- "LICENSE"
|
||||
- "NOTICE"
|
||||
env:
|
||||
GO_VERSION: "1.19"
|
||||
GO_VERSION: "1.22.7"
|
||||
KIND_VERSION: "v0.11.1"
|
||||
KIND_IMAGE: "kindest/node:v1.21.1@sha256:69860bda5563ac81e3c0057d654b5253219618a22ec3a346306239bba8cfa1a6"
|
||||
|
||||
jobs:
|
||||
lint:
|
||||
name: Lint
|
||||
runs-on: ubuntu-18.04
|
||||
runs-on: ubuntu-latest
|
||||
steps:
|
||||
- name: Setup Go
|
||||
uses: actions/setup-go@v3
|
||||
uses: actions/setup-go@v5
|
||||
with:
|
||||
go-version: ${{ env.GO_VERSION }}
|
||||
- name: Checkout code
|
||||
uses: actions/checkout@v3
|
||||
uses: actions/checkout@v4
|
||||
- name: yaml-lint
|
||||
uses: ibiqlik/action-yamllint@v3
|
||||
- name: Setup golangci-lint
|
||||
uses: golangci/golangci-lint-action@v3
|
||||
uses: golangci/golangci-lint-action@v6
|
||||
with:
|
||||
version: latest
|
||||
version: v1.57.2
|
||||
args: --verbose
|
||||
unit:
|
||||
name: Unit tests
|
||||
runs-on: ubuntu-18.04
|
||||
runs-on: ubuntu-latest
|
||||
steps:
|
||||
- name: Setup Go
|
||||
uses: actions/setup-go@v3
|
||||
uses: actions/setup-go@v5
|
||||
with:
|
||||
go-version: ${{ env.GO_VERSION }}
|
||||
- name: Checkout code
|
||||
uses: actions/checkout@v3
|
||||
uses: actions/checkout@v4
|
||||
- name: Run unit tests
|
||||
run: make tests
|
||||
- name: Upload code coverage
|
||||
uses: codecov/codecov-action@v3
|
||||
uses: codecov/codecov-action@v4
|
||||
with:
|
||||
file: ./coverage.txt
|
||||
e2e:
|
||||
name: E2e tests
|
||||
runs-on: ubuntu-18.04
|
||||
runs-on: ubuntu-latest
|
||||
steps:
|
||||
- name: Setup Go
|
||||
uses: actions/setup-go@v3
|
||||
uses: actions/setup-go@v5
|
||||
with:
|
||||
go-version: ${{ env.GO_VERSION }}
|
||||
- name: Checkout code
|
||||
uses: actions/checkout@v3
|
||||
uses: actions/checkout@v4
|
||||
- name: Setup Kubernetes cluster (KIND)
|
||||
uses: engineerd/setup-kind@v0.5.0
|
||||
uses: engineerd/setup-kind@v0.6.2
|
||||
with:
|
||||
version: ${{ env.KIND_VERSION }}
|
||||
image: ${{ env.KIND_IMAGE }}
|
||||
@@ -83,19 +83,19 @@ jobs:
|
||||
expected_result: PASSED
|
||||
release:
|
||||
name: Release snapshot
|
||||
runs-on: ubuntu-18.04
|
||||
runs-on: ubuntu-latest
|
||||
needs: [e2e, unit]
|
||||
steps:
|
||||
- name: Setup Go
|
||||
uses: actions/setup-go@v3
|
||||
uses: actions/setup-go@v5
|
||||
with:
|
||||
go-version: ${{ env.GO_VERSION }}
|
||||
- name: Checkout code
|
||||
uses: actions/checkout@v3
|
||||
uses: actions/checkout@v4
|
||||
with:
|
||||
fetch-depth: 0
|
||||
- name: Dry-run release snapshot
|
||||
uses: goreleaser/goreleaser-action@v4
|
||||
uses: goreleaser/goreleaser-action@v6
|
||||
with:
|
||||
distribution: goreleaser
|
||||
version: v1.7.0
|
||||
|
||||
6
.github/workflows/mkdocs-deploy.yaml
vendored
6
.github/workflows/mkdocs-deploy.yaml
vendored
@@ -13,14 +13,14 @@ on:
|
||||
jobs:
|
||||
deploy:
|
||||
name: Deploy documentation
|
||||
runs-on: ubuntu-18.04
|
||||
runs-on: ubuntu-latest
|
||||
steps:
|
||||
- name: Checkout main
|
||||
uses: actions/checkout@v3
|
||||
uses: actions/checkout@v4
|
||||
with:
|
||||
fetch-depth: 0
|
||||
persist-credentials: true
|
||||
- uses: actions/setup-python@v4
|
||||
- uses: actions/setup-python@v5
|
||||
with:
|
||||
python-version: 3.x
|
||||
- run: |
|
||||
|
||||
63
.github/workflows/publish.yml
vendored
63
.github/workflows/publish.yml
vendored
@@ -9,47 +9,51 @@ env:
|
||||
ALIAS: aquasecurity
|
||||
DOCKERHUB_ALIAS: aquasec
|
||||
REP: kube-bench
|
||||
|
||||
jobs:
|
||||
publish:
|
||||
name: Publish
|
||||
runs-on: ubuntu-18.04
|
||||
runs-on: ubuntu-latest
|
||||
steps:
|
||||
- name: Check Out Repo
|
||||
uses: actions/checkout@v3
|
||||
uses: actions/checkout@v4
|
||||
- name: Set up QEMU
|
||||
uses: docker/setup-qemu-action@v2
|
||||
uses: docker/setup-qemu-action@v3
|
||||
- name: Set up Docker Buildx
|
||||
id: buildx
|
||||
uses: docker/setup-buildx-action@v2
|
||||
uses: docker/setup-buildx-action@v3
|
||||
- name: Cache Docker layers
|
||||
uses: actions/cache@v3
|
||||
uses: actions/cache@v4
|
||||
with:
|
||||
path: /tmp/.buildx-cache
|
||||
key: ${{ runner.os }}-buildxarch-${{ github.sha }}
|
||||
restore-keys: |
|
||||
${{ runner.os }}-buildxarch-
|
||||
- name: Login to Docker Hub
|
||||
uses: docker/login-action@v2
|
||||
uses: docker/login-action@v3
|
||||
with:
|
||||
username: ${{ secrets.DOCKERHUB_USER }}
|
||||
password: ${{ secrets.DOCKERHUB_TOKEN }}
|
||||
- name: Login to ECR
|
||||
uses: docker/login-action@v2
|
||||
uses: docker/login-action@v3
|
||||
with:
|
||||
registry: public.ecr.aws
|
||||
username: ${{ secrets.ECR_ACCESS_KEY_ID }}
|
||||
password: ${{ secrets.ECR_SECRET_ACCESS_KEY }}
|
||||
- name: Get version
|
||||
id: get_version
|
||||
uses: crazy-max/ghaction-docker-meta@v4
|
||||
uses: crazy-max/ghaction-docker-meta@v5
|
||||
with:
|
||||
images: ${{ env.REP }}
|
||||
tag-semver: |
|
||||
{{version}}
|
||||
|
||||
- name: Extract variables from makefile (kubectl)
|
||||
id: extract_vars
|
||||
run: |
|
||||
echo "KUBECTL_VERSION=$(grep -oP '^KUBECTL_VERSION\s*\?=\s*\K.*' makefile)" >> $GITHUB_ENV
|
||||
- name: Build and push - Docker/ECR
|
||||
id: docker_build
|
||||
uses: docker/build-push-action@v3
|
||||
uses: docker/build-push-action@v6
|
||||
with:
|
||||
context: .
|
||||
platforms: linux/amd64,linux/arm64,linux/ppc64le,linux/s390x
|
||||
@@ -57,6 +61,7 @@ jobs:
|
||||
push: true
|
||||
build-args: |
|
||||
KUBEBENCH_VERSION=${{ steps.get_version.outputs.version }}
|
||||
KUBECTL_VERSION=${{ env.KUBECTL_VERSION }}
|
||||
tags: |
|
||||
${{ env.DOCKERHUB_ALIAS }}/${{ env.REP }}:${{ steps.get_version.outputs.version }}
|
||||
public.ecr.aws/${{ env.ALIAS }}/${{ env.REP }}:${{ steps.get_version.outputs.version }}
|
||||
@@ -64,5 +69,43 @@ jobs:
|
||||
public.ecr.aws/${{ env.ALIAS }}/${{ env.REP }}:latest
|
||||
cache-from: type=local,src=/tmp/.buildx-cache/release
|
||||
cache-to: type=local,mode=max,dest=/tmp/.buildx-cache/release
|
||||
|
||||
- name: Build and push ubi image - Docker/ECR
|
||||
id: docker_build_ubi
|
||||
uses: docker/build-push-action@v6
|
||||
with:
|
||||
context: .
|
||||
platforms: linux/amd64,linux/arm64,linux/ppc64le,linux/s390x
|
||||
builder: ${{ steps.buildx.outputs.name }}
|
||||
push: true
|
||||
file: Dockerfile.ubi
|
||||
build-args: |
|
||||
KUBEBENCH_VERSION=${{ steps.get_version.outputs.version }}
|
||||
KUBECTL_VERSION=${{ env.KUBECTL_VERSION }}
|
||||
tags: |
|
||||
${{ env.DOCKERHUB_ALIAS }}/${{ env.REP }}:${{ steps.get_version.outputs.version }}-ubi
|
||||
public.ecr.aws/${{ env.ALIAS }}/${{ env.REP }}:${{ steps.get_version.outputs.version }}-ubi
|
||||
cache-from: type=local,src=/tmp/.buildx-cache/release
|
||||
cache-to: type=local,mode=max,dest=/tmp/.buildx-cache/release
|
||||
- name: Image digest
|
||||
run: echo ${{ steps.docker_build.outputs.digest }}
|
||||
|
||||
- name: Build and push fips ubi image - Docker/ECR
|
||||
id: docker_build_fips_ubi
|
||||
uses: docker/build-push-action@v6
|
||||
with:
|
||||
context: .
|
||||
platforms: linux/amd64,linux/arm64,linux/ppc64le,linux/s390x
|
||||
builder: ${{ steps.buildx.outputs.name }}
|
||||
push: true
|
||||
file: Dockerfile.fips.ubi
|
||||
build-args: |
|
||||
KUBEBENCH_VERSION=${{ steps.get_version.outputs.version }}
|
||||
KUBECTL_VERSION=${{ env.KUBECTL_VERSION }}
|
||||
tags: |
|
||||
${{ env.DOCKERHUB_ALIAS }}/${{ env.REP }}:${{ steps.get_version.outputs.version }}-ubi-fips
|
||||
public.ecr.aws/${{ env.ALIAS }}/${{ env.REP }}:${{ steps.get_version.outputs.version }}-ubi-fips
|
||||
cache-from: type=local,src=/tmp/.buildx-cache/release
|
||||
cache-to: type=local,mode=max,dest=/tmp/.buildx-cache/release
|
||||
- name: Image digest
|
||||
run: echo ${{ steps.docker_build.outputs.digest }}
|
||||
|
||||
12
.github/workflows/release.yml
vendored
12
.github/workflows/release.yml
vendored
@@ -5,27 +5,27 @@ on:
|
||||
tags:
|
||||
- "v*"
|
||||
env:
|
||||
GO_VERSION: "1.19"
|
||||
GO_VERSION: "1.22.7"
|
||||
KIND_VERSION: "v0.11.1"
|
||||
KIND_IMAGE: "kindest/node:v1.21.1@sha256:69860bda5563ac81e3c0057d654b5253219618a22ec3a346306239bba8cfa1a6"
|
||||
|
||||
jobs:
|
||||
release:
|
||||
name: Release
|
||||
runs-on: ubuntu-18.04
|
||||
runs-on: ubuntu-latest
|
||||
steps:
|
||||
- name: Setup Go
|
||||
uses: actions/setup-go@v3
|
||||
uses: actions/setup-go@v5
|
||||
with:
|
||||
go-version: ${{ env.GO_VERSION }}
|
||||
- name: Checkout code
|
||||
uses: actions/checkout@v3
|
||||
uses: actions/checkout@v4
|
||||
with:
|
||||
fetch-depth: 0
|
||||
- name: Run unit tests
|
||||
run: make tests
|
||||
- name: Setup Kubernetes cluster (KIND)
|
||||
uses: engineerd/setup-kind@v0.5.0
|
||||
uses: engineerd/setup-kind@v0.6.2
|
||||
with:
|
||||
version: ${{ env.KIND_VERSION }}
|
||||
image: ${{ env.KIND_IMAGE }}
|
||||
@@ -44,7 +44,7 @@ jobs:
|
||||
second_file_path: integration/testdata/Expected_output.data
|
||||
expected_result: PASSED
|
||||
- name: Release
|
||||
uses: goreleaser/goreleaser-action@v4
|
||||
uses: goreleaser/goreleaser-action@v6
|
||||
with:
|
||||
distribution: goreleaser
|
||||
version: v1.7.0
|
||||
|
||||
@@ -2,12 +2,18 @@
|
||||
project_name: kube-bench
|
||||
env:
|
||||
- GO111MODULE=on
|
||||
- CGO_ENABLED=0
|
||||
- KUBEBENCH_CFG=/etc/kube-bench/cfg
|
||||
builds:
|
||||
- main: main.go
|
||||
binary: kube-bench
|
||||
tags:
|
||||
- osusergo
|
||||
- netgo
|
||||
- static_build
|
||||
goos:
|
||||
- linux
|
||||
- darwin
|
||||
goarch:
|
||||
- amd64
|
||||
- arm
|
||||
@@ -18,6 +24,9 @@ builds:
|
||||
- 6
|
||||
- 7
|
||||
ldflags:
|
||||
- "-s"
|
||||
- "-w"
|
||||
- "-extldflags '-static'"
|
||||
- "-X github.com/aquasecurity/kube-bench/cmd.KubeBenchVersion={{.Version}}"
|
||||
- "-X github.com/aquasecurity/kube-bench/cmd.cfgDir={{.Env.KUBEBENCH_CFG}}"
|
||||
# Archive customization
|
||||
|
||||
21
Dockerfile
21
Dockerfile
@@ -1,4 +1,4 @@
|
||||
FROM golang:1.19.4 AS build
|
||||
FROM golang:1.23.3 AS build
|
||||
WORKDIR /go/src/github.com/aquasecurity/kube-bench/
|
||||
COPY makefile makefile
|
||||
COPY go.mod go.sum ./
|
||||
@@ -9,11 +9,22 @@ COPY internal/ internal/
|
||||
ARG KUBEBENCH_VERSION
|
||||
RUN make build && cp kube-bench /go/bin/kube-bench
|
||||
|
||||
FROM alpine:3.17.0 AS run
|
||||
# Add kubectl to run policies checks
|
||||
ARG KUBECTL_VERSION TARGETARCH
|
||||
RUN wget -O /usr/local/bin/kubectl "https://dl.k8s.io/release/v${KUBECTL_VERSION}/bin/linux/${TARGETARCH}/kubectl"
|
||||
RUN wget -O kubectl.sha256 "https://dl.k8s.io/release/v${KUBECTL_VERSION}/bin/linux/${TARGETARCH}/kubectl.sha256"
|
||||
|
||||
# Verify kubectl sha256sum
|
||||
RUN /bin/bash -c 'echo "$(<kubectl.sha256) /usr/local/bin/kubectl" | sha256sum -c -'
|
||||
|
||||
RUN chmod +x /usr/local/bin/kubectl
|
||||
|
||||
FROM alpine:3.20.3 AS run
|
||||
WORKDIR /opt/kube-bench/
|
||||
# add GNU ps for -C, -o cmd, and --no-headers support
|
||||
# add GNU ps for -C, -o cmd, --no-headers support and add findutils to get GNU xargs
|
||||
# https://github.com/aquasecurity/kube-bench/issues/109
|
||||
RUN apk --no-cache add procps
|
||||
# https://github.com/aquasecurity/kube-bench/issues/1656
|
||||
RUN apk --no-cache add procps findutils
|
||||
|
||||
# Upgrading apk-tools to remediate CVE-2021-36159 - https://snyk.io/vuln/SNYK-ALPINE314-APKTOOLS-1533752
|
||||
# https://github.com/aquasecurity/kube-bench/issues/943
|
||||
@@ -32,8 +43,10 @@ RUN apk add jq
|
||||
ENV PATH=$PATH:/usr/local/mount-from-host/bin
|
||||
|
||||
COPY --from=build /go/bin/kube-bench /usr/local/bin/kube-bench
|
||||
COPY --from=build /usr/local/bin/kubectl /usr/local/bin/kubectl
|
||||
COPY entrypoint.sh .
|
||||
COPY cfg/ cfg/
|
||||
COPY helper_scripts/check_files_owner_in_dir.sh /go/bin
|
||||
ENTRYPOINT ["./entrypoint.sh"]
|
||||
CMD ["install"]
|
||||
|
||||
|
||||
59
Dockerfile.fips.ubi
Normal file
59
Dockerfile.fips.ubi
Normal file
@@ -0,0 +1,59 @@
|
||||
FROM golang:1.23.3 AS build
|
||||
WORKDIR /go/src/github.com/aquasecurity/kube-bench/
|
||||
COPY makefile makefile
|
||||
COPY go.mod go.sum ./
|
||||
COPY main.go .
|
||||
COPY check/ check/
|
||||
COPY cmd/ cmd/
|
||||
COPY internal/ internal/
|
||||
ARG KUBEBENCH_VERSION
|
||||
RUN make build-fips && cp kube-bench /go/bin/kube-bench
|
||||
|
||||
# Add kubectl to run policies checks
|
||||
ARG KUBECTL_VERSION TARGETARCH
|
||||
RUN wget -O /usr/local/bin/kubectl "https://dl.k8s.io/release/v${KUBECTL_VERSION}/bin/linux/${TARGETARCH}/kubectl"
|
||||
RUN wget -O kubectl.sha256 "https://dl.k8s.io/release/v${KUBECTL_VERSION}/bin/linux/${TARGETARCH}/kubectl.sha256"
|
||||
# Verify kubectl sha256sum
|
||||
RUN /bin/bash -c 'echo "$(<kubectl.sha256) /usr/local/bin/kubectl" | sha256sum -c -'
|
||||
RUN chmod +x /usr/local/bin/kubectl
|
||||
|
||||
|
||||
# ubi8-minimal base image for build with ubi standards
|
||||
FROM registry.access.redhat.com/ubi9/ubi-minimal as run
|
||||
|
||||
RUN microdnf install -y yum findutils openssl \
|
||||
&& yum -y update-minimal --security --sec-severity=Moderate --sec-severity=Important --sec-severity=Critical \
|
||||
&& yum update -y \
|
||||
&& yum install -y glibc \
|
||||
&& yum update -y glibc \
|
||||
&& yum install -y procps \
|
||||
&& yum update -y procps \
|
||||
&& yum install jq -y \
|
||||
&& yum clean all \
|
||||
&& microdnf remove yum || rpm -e -v yum \
|
||||
&& microdnf clean all
|
||||
|
||||
WORKDIR /opt/kube-bench/
|
||||
|
||||
ENV PATH=$PATH:/usr/local/mount-from-host/bin
|
||||
|
||||
COPY LICENSE /licenses/LICENSE
|
||||
COPY --from=build /go/bin/kube-bench /usr/local/bin/kube-bench
|
||||
COPY --from=build /usr/local/bin/kubectl /usr/local/bin/kubectl
|
||||
COPY entrypoint.sh .
|
||||
COPY cfg/ cfg/
|
||||
COPY helper_scripts/check_files_owner_in_dir.sh /go/bin
|
||||
ENTRYPOINT ["./entrypoint.sh"]
|
||||
CMD ["install"]
|
||||
|
||||
|
||||
# Build-time metadata as defined at http://label-schema.org
|
||||
ARG BUILD_DATE
|
||||
ARG VCS_REF
|
||||
LABEL org.label-schema.build-date=$BUILD_DATE \
|
||||
org.label-schema.name="kube-bench" \
|
||||
org.label-schema.description="Run the CIS Kubernetes Benchmark tests" \
|
||||
org.label-schema.url="https://github.com/aquasecurity/kube-bench" \
|
||||
org.label-schema.vcs-ref=$VCS_REF \
|
||||
org.label-schema.vcs-url="https://github.com/aquasecurity/kube-bench" \
|
||||
org.label-schema.schema-version="1.0"
|
||||
@@ -1,4 +1,4 @@
|
||||
FROM golang:1.19.4 AS build
|
||||
FROM golang:1.23.3 AS build
|
||||
WORKDIR /go/src/github.com/aquasecurity/kube-bench/
|
||||
COPY makefile makefile
|
||||
COPY go.mod go.sum ./
|
||||
@@ -9,11 +9,19 @@ COPY internal/ internal/
|
||||
ARG KUBEBENCH_VERSION
|
||||
RUN make build && cp kube-bench /go/bin/kube-bench
|
||||
|
||||
# Add kubectl to run policies checks
|
||||
ARG KUBECTL_VERSION TARGETARCH
|
||||
RUN wget -O /usr/local/bin/kubectl "https://dl.k8s.io/release/v${KUBECTL_VERSION}/bin/linux/${TARGETARCH}/kubectl"
|
||||
RUN wget -O kubectl.sha256 "https://dl.k8s.io/release/v${KUBECTL_VERSION}/bin/linux/${TARGETARCH}/kubectl.sha256"
|
||||
# Verify kubectl sha256sum
|
||||
RUN /bin/bash -c 'echo "$(<kubectl.sha256) /usr/local/bin/kubectl" | sha256sum -c -'
|
||||
RUN chmod +x /usr/local/bin/kubectl
|
||||
|
||||
|
||||
# ubi8-minimal base image for build with ubi standards
|
||||
FROM registry.access.redhat.com/ubi8/ubi-minimal:8.7 as run
|
||||
FROM registry.access.redhat.com/ubi9/ubi-minimal as run
|
||||
|
||||
RUN microdnf install yum findutils openssl\
|
||||
RUN microdnf install -y yum findutils openssl \
|
||||
&& yum -y update-minimal --security --sec-severity=Moderate --sec-severity=Important --sec-severity=Critical \
|
||||
&& yum update -y \
|
||||
&& yum install -y glibc \
|
||||
@@ -29,9 +37,12 @@ WORKDIR /opt/kube-bench/
|
||||
|
||||
ENV PATH=$PATH:/usr/local/mount-from-host/bin
|
||||
|
||||
COPY LICENSE /licenses/LICENSE
|
||||
COPY --from=build /go/bin/kube-bench /usr/local/bin/kube-bench
|
||||
COPY --from=build /usr/local/bin/kubectl /usr/local/bin/kubectl
|
||||
COPY entrypoint.sh .
|
||||
COPY cfg/ cfg/
|
||||
COPY helper_scripts/check_files_owner_in_dir.sh /go/bin
|
||||
ENTRYPOINT ["./entrypoint.sh"]
|
||||
CMD ["install"]
|
||||
|
||||
@@ -24,7 +24,12 @@ Tests are configured with YAML files, making this tool easy to update as test sp
|
||||
|
||||

|
||||
|
||||
### Quick start
|
||||
## CIS Scanning as part of Trivy and the Trivy Operator
|
||||
|
||||
[Trivy](https://github.com/aquasecurity/trivy), the all in one cloud native security scanner, can be deployed as a [Kubernetes Operator](https://github.com/aquasecurity/trivy-operator) inside a cluster.
|
||||
Both, the [Trivy CLI](https://github.com/aquasecurity/trivy), and the [Trivy Operator](https://github.com/aquasecurity/trivy-operator) support CIS Kubernetes Benchmark scanning among several other features.
|
||||
|
||||
## Quick start
|
||||
|
||||
There are multiple ways to run kube-bench.
|
||||
You can run kube-bench inside a pod, but it will need access to the host's PID namespace in order to check the running processes, as well as access to some directories on the host where config files and other files are stored.
|
||||
|
||||
@@ -25,14 +25,16 @@ groups:
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
audit: '/bin/sh -c "if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; else echo \"File not found\"; fi"'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "File not found"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
@@ -45,8 +47,6 @@ groups:
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
- flag: "$proxykubeconfig"
|
||||
set: false
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
@@ -60,8 +60,6 @@ groups:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "$proxykubeconfig"
|
||||
set: false
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
@@ -97,7 +95,7 @@ groups:
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c permissions=%a $CAFILE; fi
|
||||
tests:
|
||||
@@ -114,7 +112,7 @@ groups:
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c %U:%G $CAFILE; fi
|
||||
tests:
|
||||
@@ -379,7 +377,7 @@ groups:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set TLSCipherSuites: to
|
||||
If using a Kubelet config file, edit the file to set tlsCipherSuites: to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
|
||||
@@ -25,14 +25,16 @@ groups:
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
audit: '/bin/sh -c "if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; else echo \"File not found\"; fi"'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "File not found"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
@@ -46,8 +48,6 @@ groups:
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
- flag: "$proxykubeconfig"
|
||||
set: false
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
@@ -61,8 +61,6 @@ groups:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "$proxykubeconfig"
|
||||
set: false
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
@@ -98,7 +96,7 @@ groups:
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c permissions=%a $CAFILE; fi
|
||||
tests:
|
||||
@@ -115,7 +113,7 @@ groups:
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c %U:%G $CAFILE; fi
|
||||
tests:
|
||||
@@ -450,7 +448,7 @@ groups:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set TLSCipherSuites: to
|
||||
If using a Kubelet config file, edit the file to set tlsCipherSuites: to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
|
||||
@@ -24,14 +24,16 @@ groups:
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
audit: '/bin/sh -c "if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; else echo \"File not found\"; fi"'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "File not found"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
@@ -45,8 +47,6 @@ groups:
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
- flag: "$proxykubeconfig"
|
||||
set: false
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
@@ -60,8 +60,6 @@ groups:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "$proxykubeconfig"
|
||||
set: false
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
@@ -97,7 +95,7 @@ groups:
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c permissions=%a $CAFILE; fi
|
||||
tests:
|
||||
@@ -114,7 +112,7 @@ groups:
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c %U:%G $CAFILE; fi
|
||||
tests:
|
||||
@@ -449,7 +447,7 @@ groups:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `TLSCipherSuites` to
|
||||
If using a Kubelet config file, edit the file to set `tlsCipherSuites` to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
|
||||
2
cfg/cis-1.24-microk8s/config.yaml
Normal file
2
cfg/cis-1.24-microk8s/config.yaml
Normal file
@@ -0,0 +1,2 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
46
cfg/cis-1.24-microk8s/controlplane.yaml
Normal file
46
cfg/cis-1.24-microk8s/controlplane.yaml
Normal file
@@ -0,0 +1,46 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.24"
|
||||
id: 3
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Client certificate authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be
|
||||
implemented in place of client certificates.
|
||||
scored: false
|
||||
|
||||
- id: 3.2
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that a minimal audit policy is created (Manual)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-policy-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Create an audit policy file for your cluster.
|
||||
scored: false
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the audit policy covers key security concerns (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the audit policy provided for the cluster and ensure that it covers
|
||||
at least the following areas,
|
||||
- Access to Secrets managed by the cluster. Care should be taken to only
|
||||
log Metadata for requests to Secrets, ConfigMaps, and TokenReviews, in
|
||||
order to avoid risk of logging sensitive data.
|
||||
- Modification of Pod and Deployment objects.
|
||||
- Use of `pods/exec`, `pods/portforward`, `pods/proxy` and `services/proxy`.
|
||||
For most requests, minimally logging at the Metadata level is recommended
|
||||
(the most basic level of logging).
|
||||
scored: false
|
||||
121
cfg/cis-1.24-microk8s/etcd.yaml
Normal file
121
cfg/cis-1.24-microk8s/etcd.yaml
Normal file
@@ -0,0 +1,121 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.24"
|
||||
id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
type: "etcd"
|
||||
groups:
|
||||
- id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
checks:
|
||||
- id: 2.1
|
||||
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--cert-file"
|
||||
env: "ETCD_CERT_FILE"
|
||||
- flag: "--key-file"
|
||||
env: "ETCD_KEY_FILE"
|
||||
remediation: |
|
||||
Not applicable. MicroK8s used dqlite and the communication to this service is done through a
|
||||
local socket (/var/snap/microk8s/current/var/kubernetes/backend/kine.sock:12379) accessible
|
||||
to users with root permissions.
|
||||
scored: false
|
||||
|
||||
- id: 2.2
|
||||
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--client-cert-auth"
|
||||
env: "ETCD_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Not applicable. MicroK8s used dqlite and the communication to this service is done through a
|
||||
local socket (/var/snap/microk8s/current/var/kubernetes/backend/kine.sock:12379) accessible
|
||||
to users with root permissions.
|
||||
scored: false
|
||||
|
||||
- id: 2.3
|
||||
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Not applicable. MicroK8s used dqlite and the communication to this service is done through a
|
||||
local socket (/var/snap/microk8s/current/var/kubernetes/backend/kine.sock:12379) accessible
|
||||
to users with root permissions.
|
||||
scored: false
|
||||
|
||||
- id: 2.4
|
||||
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "if test -e /var/snap/microk8s/current/var/kubernetes/backend/cluster.crt && test -e /var/snap/microk8s/current/var/kubernetes/backend/cluster.key; then echo 'certs-found'; fi"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "certs-found"
|
||||
remediation: |
|
||||
The certificate pair for dqlite and tls peer communication is
|
||||
/var/snap/microk8s/current/var/kubernetes/backend/cluster.crt and
|
||||
/var/snap/microk8s/current/var/kubernetes/backend/cluster.key.
|
||||
scored: true
|
||||
|
||||
- id: 2.5
|
||||
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/cat $etcdconf | /bin/grep enable-tls || true"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-tls"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: "--enable-tls"
|
||||
set: false
|
||||
remediation: |
|
||||
MicroK8s used dqlite and tls peer communication uses is TLS if the --enable-tls is set in
|
||||
/var/snap/microk8s/current/args/k8s-dqlite, set to true by default.
|
||||
scored: true
|
||||
|
||||
- id: 2.6
|
||||
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Not applicable. MicroK8s used dqlite and tls peer communication uses the certificates
|
||||
created upon the snap creation.
|
||||
scored: false
|
||||
|
||||
- id: 2.7
|
||||
text: "Ensure that a unique Certificate Authority is used for etcd (Manual)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--trusted-ca-file"
|
||||
env: "ETCD_TRUSTED_CA_FILE"
|
||||
remediation: |
|
||||
Not applicable. MicroK8s used dqlite and tls peer communication uses the certificates
|
||||
created upon the snap creation.
|
||||
scored: false
|
||||
948
cfg/cis-1.24-microk8s/master.yaml
Normal file
948
cfg/cis-1.24-microk8s/master.yaml
Normal file
@@ -0,0 +1,948 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.24"
|
||||
id: 1
|
||||
text: "Control Plane Security Configuration"
|
||||
type: "master"
|
||||
groups:
|
||||
- id: 1.1
|
||||
text: "Control Plane Node Configuration Files"
|
||||
checks:
|
||||
- id: 1.1.1
|
||||
text: "Ensure that the API server pod specification file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c permissions=%a $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the
|
||||
control plane node.
|
||||
For example, chmod 644 $apiserverconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.2
|
||||
text: "Ensure that the API server pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c %U:%G $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $apiserverconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.3
|
||||
text: "Ensure that the controller manager pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c permissions=%a $controllermanagerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 $controllermanagerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.4
|
||||
text: "Ensure that the controller manager pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c %U:%G $controllermanagerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $controllermanagerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.5
|
||||
text: "Ensure that the scheduler pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c permissions=%a $schedulerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 $schedulerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.6
|
||||
text: "Ensure that the scheduler pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c %U:%G $schedulerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $schedulerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.7
|
||||
text: "Ensure that the etcd pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then stat -c permissions=%a $etcdconf; fi'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $etcdconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.8
|
||||
text: "Ensure that the etcd pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then stat -c %U:%G $etcdconf; fi'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $etcdconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.9
|
||||
text: "Ensure that the Container Network Interface file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: |
|
||||
find /var/snap/microk8s/current/args/cni-network/10-calico.conflist -type f 2> /dev/null | xargs --no-run-if-empty stat -c permissions=%a
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 <path/to/cni/files>
|
||||
scored: false
|
||||
|
||||
- id: 1.1.10
|
||||
text: "Ensure that the Container Network Interface file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
ps -ef | grep $kubeletbin | grep -- --cni-conf-dir | sed 's%.*cni-conf-dir[= ]\([^ ]*\).*%\1%' | xargs -I{} find {} -mindepth 1 | xargs --no-run-if-empty stat -c %U:%G
|
||||
find /var/snap/microk8s/current/args/cni-network/10-calico.conflist -type f 2> /dev/null | xargs --no-run-if-empty stat -c %U:%G
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root <path/to/cni/files>
|
||||
scored: false
|
||||
|
||||
# Etcd is not running on MicroK8s master nodes
|
||||
- id: 1.1.11
|
||||
text: "Ensure that the etcd data directory permissions are set to 700 or more restrictive (Automated)"
|
||||
audit: |
|
||||
DATA_DIR='/var/snap/microk8s/current/var/kubernetes/backend/'
|
||||
if ! test -d "$DATA_DIR"; then DATA_DIR=$etcddatadir; fi
|
||||
stat -c permissions=%a "$DATA_DIR"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "700"
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above). For example,
|
||||
chmod 700 /var/snap/microk8s/current/var/kubernetes/backend/
|
||||
scored: true
|
||||
|
||||
# Etcd is not running on MicroK8s master nodes
|
||||
- id: 1.1.12
|
||||
text: "Ensure that the etcd data directory ownership is set to etcd:etcd (Automated)"
|
||||
audit: |
|
||||
DATA_DIR='/var/snap/microk8s/current/var/kubernetes/backend/'
|
||||
if ! test -d "$DATA_DIR"; then DATA_DIR=$etcddatadir; fi
|
||||
stat -c %U:%G "$DATA_DIR"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above).
|
||||
For example, chown root:root /var/snap/microk8s/current/var/kubernetes/backend/
|
||||
scored: true
|
||||
|
||||
- id: 1.1.13
|
||||
text: "Ensure that the admin.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /var/snap/microk8s/current/credentials/client.config; then stat -c permissions=%a /var/snap/microk8s/current/credentials/client.config; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 /var/snap/microk8s/current/credentials/client.config
|
||||
scored: true
|
||||
|
||||
- id: 1.1.14
|
||||
text: "Ensure that the admin.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /var/snap/microk8s/current/credentials/client.config; then stat -c %U:%G /var/snap/microk8s/current/credentials/client.config; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root /var/snap/microk8s/current/credentials/client.config
|
||||
scored: true
|
||||
|
||||
- id: 1.1.15
|
||||
text: "Ensure that the scheduler.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerkubeconfig; then stat -c permissions=%a $schedulerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $schedulerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.16
|
||||
text: "Ensure that the scheduler.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerkubeconfig; then stat -c %U:%G $schedulerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $schedulerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.17
|
||||
text: "Ensure that the controller-manager.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerkubeconfig; then stat -c permissions=%a $controllermanagerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $controllermanagerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.18
|
||||
text: "Ensure that the controller-manager.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerkubeconfig; then stat -c %U:%G $controllermanagerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $controllermanagerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.19
|
||||
text: "Ensure that the Kubernetes PKI directory and file ownership is set to root:root (Automated)"
|
||||
audit: "find /var/snap/microk8s/current/certs/ | xargs stat -c %U:%G"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown -R root:root /var/snap/microk8s/current/certs/
|
||||
scored: true
|
||||
|
||||
- id: 1.1.20
|
||||
text: "Ensure that the Kubernetes PKI certificate file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: "find /var/snap/microk8s/current/certs/ -name '*.crt' | xargs stat -c permissions=%a"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod -R 600 /var/snap/microk8s/current/certs/*.crt
|
||||
scored: false
|
||||
|
||||
- id: 1.1.21
|
||||
text: "Ensure that the Kubernetes PKI key file permissions are set to 600 (Manual)"
|
||||
audit: "find /var/snap/microk8s/current/certs/ -name '*.key' | xargs stat -c permissions=%a"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod -R 600 /var/snap/microk8s/current/certs/*.key
|
||||
scored: false
|
||||
|
||||
- id: 1.2
|
||||
text: "API Server"
|
||||
checks:
|
||||
- id: 1.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Manual)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
- flag: "--anonymous-auth"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--anonymous-auth=false
|
||||
scored: false
|
||||
|
||||
- id: 1.2.2
|
||||
text: "Ensure that the --token-auth-file parameter is not set (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--token-auth-file"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and configure alternate mechanisms for authentication. Then,
|
||||
edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and remove the --token-auth-file=<filename> parameter.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.3
|
||||
text: "Ensure that the --DenyServiceExternalIPs is not set (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "DenyServiceExternalIPs"
|
||||
- flag: "--enable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and remove the `DenyServiceExternalIPs`
|
||||
from enabled admission plugins.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.4
|
||||
text: "Ensure that the --kubelet-client-certificate and --kubelet-client-key arguments are set as appropriate (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--kubelet-client-certificate"
|
||||
- flag: "--kubelet-client-key"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the
|
||||
apiserver and kubelets. Then, edit API server pod specification file
|
||||
$apiserverconf on the control plane node and set the
|
||||
kubelet client certificate and key parameters as below.
|
||||
--kubelet-client-certificate=<path/to/client-certificate-file>
|
||||
--kubelet-client-key=<path/to/client-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.5
|
||||
text: "Ensure that the --kubelet-certificate-authority argument is set as appropriate (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--kubelet-certificate-authority"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup the TLS connection between
|
||||
the apiserver and kubelets. Then, edit the API server pod specification file
|
||||
$apiserverconf on the control plane node and set the
|
||||
--kubelet-certificate-authority parameter to the path to the cert file for the certificate authority.
|
||||
--kubelet-certificate-authority=<ca-string>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.6
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "AlwaysAllow"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to values other than AlwaysAllow.
|
||||
One such example could be as below.
|
||||
--authorization-mode=RBAC
|
||||
scored: true
|
||||
|
||||
- id: 1.2.7
|
||||
text: "Ensure that the --authorization-mode argument includes Node (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "Node"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to a value that includes Node.
|
||||
--authorization-mode=Node,RBAC
|
||||
scored: true
|
||||
|
||||
- id: 1.2.8
|
||||
text: "Ensure that the --authorization-mode argument includes RBAC (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "RBAC"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to a value that includes RBAC,
|
||||
for example `--authorization-mode=Node,RBAC`.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.9
|
||||
text: "Ensure that the admission control plugin EventRateLimit is set (Manual)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "EventRateLimit"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set the desired limits in a configuration file.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
and set the below parameters.
|
||||
--enable-admission-plugins=...,EventRateLimit,...
|
||||
--admission-control-config-file=<path/to/configuration/file>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.10
|
||||
text: "Ensure that the admission control plugin AlwaysAdmit is not set (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAdmit
|
||||
- flag: "--enable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and either remove the --enable-admission-plugins parameter, or set it to a
|
||||
value that does not include AlwaysAdmit.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.11
|
||||
text: "Ensure that the admission control plugin AlwaysPullImages is set (Manual)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "AlwaysPullImages"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to include
|
||||
AlwaysPullImages.
|
||||
--enable-admission-plugins=...,AlwaysPullImages,...
|
||||
scored: false
|
||||
|
||||
- id: 1.2.12
|
||||
text: "Ensure that the admission control plugin SecurityContextDeny is set if PodSecurityPolicy is not used (Manual)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "SecurityContextDeny"
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "PodSecurityPolicy"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to include
|
||||
SecurityContextDeny, unless PodSecurityPolicy is already in place.
|
||||
--enable-admission-plugins=...,SecurityContextDeny,...
|
||||
scored: false
|
||||
|
||||
- id: 1.2.13
|
||||
text: "Ensure that the admission control plugin ServiceAccount is set (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "ServiceAccount"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and create ServiceAccount objects as per your environment.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and ensure that the --disable-admission-plugins parameter is set to a
|
||||
value that does not include ServiceAccount.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.14
|
||||
text: "Ensure that the admission control plugin NamespaceLifecycle is set (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "NamespaceLifecycle"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --disable-admission-plugins parameter to
|
||||
ensure it does not include NamespaceLifecycle.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.15
|
||||
text: "Ensure that the admission control plugin NodeRestriction is set (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "NodeRestriction"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure NodeRestriction plug-in on kubelets.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to a
|
||||
value that includes NodeRestriction.
|
||||
--enable-admission-plugins=...,NodeRestriction,...
|
||||
scored: true
|
||||
|
||||
- id: 1.2.16
|
||||
text: "Ensure that the --secure-port argument is not set to 0 (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--secure-port"
|
||||
compare:
|
||||
op: gt
|
||||
value: 0
|
||||
- flag: "--secure-port"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and either remove the --secure-port parameter or
|
||||
set it to a different (non-zero) desired port.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.17
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.2.18
|
||||
text: "Ensure that the --audit-log-path argument is set (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-path"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-path parameter to a suitable path and
|
||||
file where you would like audit logs to be written, for example,
|
||||
--audit-log-path=/var/log/apiserver/audit.log
|
||||
scored: true
|
||||
|
||||
- id: 1.2.19
|
||||
text: "Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxage"
|
||||
compare:
|
||||
op: gte
|
||||
value: 30
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxage parameter to 30
|
||||
or as an appropriate number of days, for example,
|
||||
--audit-log-maxage=30
|
||||
scored: true
|
||||
|
||||
- id: 1.2.20
|
||||
text: "Ensure that the --audit-log-maxbackup argument is set to 10 or as appropriate (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxbackup"
|
||||
compare:
|
||||
op: gte
|
||||
value: 10
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxbackup parameter to 10 or to an appropriate
|
||||
value. For example,
|
||||
--audit-log-maxbackup=10
|
||||
scored: true
|
||||
|
||||
- id: 1.2.21
|
||||
text: "Ensure that the --audit-log-maxsize argument is set to 100 or as appropriate (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxsize"
|
||||
compare:
|
||||
op: gte
|
||||
value: 100
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxsize parameter to an appropriate size in MB.
|
||||
For example, to set it as 100 MB, --audit-log-maxsize=100
|
||||
scored: true
|
||||
|
||||
- id: 1.2.22
|
||||
text: "Ensure that the --request-timeout argument is set as appropriate (Manual)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
type: manual
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
and set the below parameter as appropriate and if needed.
|
||||
For example, --request-timeout=300s
|
||||
scored: false
|
||||
|
||||
- id: 1.2.23
|
||||
text: "Ensure that the --service-account-lookup argument is set to true (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--service-account-lookup"
|
||||
set: false
|
||||
- flag: "--service-account-lookup"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--service-account-lookup=true
|
||||
Alternatively, you can delete the --service-account-lookup parameter from this file so
|
||||
that the default takes effect.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.24
|
||||
text: "Ensure that the --service-account-key-file argument is set as appropriate (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-key-file"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --service-account-key-file parameter
|
||||
to the public key file for service accounts. For example,
|
||||
--service-account-key-file=<filename>
|
||||
scored: true
|
||||
|
||||
# MicroK8s does not use etcd. The API server talk to a local dqlite instance
|
||||
- id: 1.2.25
|
||||
text: "Ensure that the --etcd-certfile and --etcd-keyfile arguments are set as appropriate (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--etcd-certfile"
|
||||
- flag: "--etcd-keyfile"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the etcd certificate and key file parameters.
|
||||
--etcd-certfile=<path/to/client-certificate-file>
|
||||
--etcd-keyfile=<path/to/client-key-file>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.26
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--tls-cert-file"
|
||||
- flag: "--tls-private-key-file"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the TLS certificate and private key file parameters.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.27
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--client-ca-file"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the client certificate authority file.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.28
|
||||
text: "Ensure that the --etcd-cafile argument is set as appropriate (Automated)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--etcd-cafile"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the etcd certificate authority file parameter.
|
||||
--etcd-cafile=<path/to/ca-file>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.29
|
||||
text: "Ensure that the --encryption-provider-config argument is set as appropriate (Manual)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--encryption-provider-config"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --encryption-provider-config parameter to the path of that file.
|
||||
For example, --encryption-provider-config=</path/to/EncryptionConfig/File>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.30
|
||||
text: "Ensure that encryption providers are appropriately configured (Manual)"
|
||||
audit: |
|
||||
ENCRYPTION_PROVIDER_CONFIG=$(cat $apiserverconf | grep -- --encryption-provider-config | sed 's%.*encryption-provider-config[= ]\([^ ]*\).*%\1%')
|
||||
if test -e $ENCRYPTION_PROVIDER_CONFIG; then grep -A1 'providers:' $ENCRYPTION_PROVIDER_CONFIG | tail -n1 | grep -o "[A-Za-z]*" | sed 's/^/provider=/'; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "provider"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "aescbc,kms,secretbox"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
||||
In this file, choose aescbc, kms or secretbox as the encryption provider.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.31
|
||||
text: "Ensure that the API Server only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "cat $apiserverconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--tls-cipher-suites"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384"
|
||||
remediation: |
|
||||
Edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml
|
||||
on the control plane node and set the below parameter.
|
||||
--tls-cipher-suites=TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
|
||||
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
|
||||
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
|
||||
TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
|
||||
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
|
||||
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,
|
||||
TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384
|
||||
scored: false
|
||||
|
||||
- id: 1.3
|
||||
text: "Controller Manager"
|
||||
checks:
|
||||
- id: 1.3.1
|
||||
text: "Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Manual)"
|
||||
audit: "cat $controllermanagerconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--terminated-pod-gc-threshold"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --terminated-pod-gc-threshold to an appropriate threshold,
|
||||
for example, --terminated-pod-gc-threshold=10
|
||||
scored: false
|
||||
|
||||
- id: 1.3.2
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "cat $controllermanagerconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.3.3
|
||||
text: "Ensure that the --use-service-account-credentials argument is set to true (Automated)"
|
||||
audit: "cat $controllermanagerconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--use-service-account-credentials"
|
||||
compare:
|
||||
op: noteq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node to set the below parameter.
|
||||
--use-service-account-credentials=true
|
||||
scored: true
|
||||
|
||||
- id: 1.3.4
|
||||
text: "Ensure that the --service-account-private-key-file argument is set as appropriate (Automated)"
|
||||
audit: "cat $controllermanagerconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-private-key-file"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --service-account-private-key-file parameter
|
||||
to the private key file for service accounts.
|
||||
--service-account-private-key-file=<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.3.5
|
||||
text: "Ensure that the --root-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "cat $controllermanagerconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--root-ca-file"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --root-ca-file parameter to the certificate bundle file`.
|
||||
--root-ca-file=<path/to/file>
|
||||
scored: true
|
||||
|
||||
- id: 1.3.6
|
||||
text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Automated)"
|
||||
audit: "cat $controllermanagerconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--feature-gates"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "RotateKubeletServerCertificate=false"
|
||||
set: true
|
||||
- flag: "--feature-gates"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --feature-gates parameter to include RotateKubeletServerCertificate=true.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
scored: true
|
||||
|
||||
- id: 1.3.7
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "cat $controllermanagerconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and ensure the correct value for the --bind-address parameter
|
||||
scored: true
|
||||
|
||||
- id: 1.4
|
||||
text: "Scheduler"
|
||||
checks:
|
||||
- id: 1.4.1
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "cat $schedulerconf | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Scheduler pod specification file $schedulerconf file
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.4.2
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "cat $schedulerconf | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Scheduler pod specification file $schedulerconf
|
||||
on the control plane node and ensure the correct value for the --bind-address parameter
|
||||
scored: true
|
||||
458
cfg/cis-1.24-microk8s/node.yaml
Normal file
458
cfg/cis-1.24-microk8s/node.yaml
Normal file
@@ -0,0 +1,458 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.24"
|
||||
id: 4
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the kubelet service file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $kubeletsvc; then stat -c permissions=%a $kubeletsvc; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chmod 600 $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
text: "If proxy kubeconfig file exists ensure permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: "/bin/sh -c 'if test -e $proxykubeconfig; then stat -c permissions=%a $proxykubeconfig; fi' "
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
set: true
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $proxykubeconfig
|
||||
scored: false
|
||||
|
||||
- id: 4.1.4
|
||||
text: "If proxy kubeconfig file exists ensure ownership is set to root:root (Manual)"
|
||||
audit: "/bin/sh -c 'if test -e $proxykubeconfig; then stat -c %U:%G $proxykubeconfig; fi' "
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
scored: false
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $kubeletkubeconfig; then stat -c permissions=%a $kubeletkubeconfig; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $kubeletkubeconfig; then stat -c %U:%G $kubeletkubeconfig; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c permissions=%a $CAFILE; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command to modify the file permissions of the
|
||||
--client-ca-file chmod 600 <filename>
|
||||
scored: false
|
||||
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c %U:%G $CAFILE; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
compare:
|
||||
op: eq
|
||||
value: root:root
|
||||
remediation: |
|
||||
Run the following command to modify the ownership of the --client-ca-file.
|
||||
chown root:root <filename>
|
||||
scored: false
|
||||
|
||||
- id: 4.1.9
|
||||
text: "If the kubelet config.yaml configuration file is being used validate permissions set to 600 or more restrictive (Manual)"
|
||||
audit: "/bin/sh -c 'if test -e $kubeletconf; then stat -c permissions=%a $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chmod 600 $kubeletconf
|
||||
scored: false
|
||||
|
||||
- id: 4.1.10
|
||||
text: "If the kubelet config.yaml configuration file is being used validate file ownership is set to root:root (Manual)"
|
||||
audit: "/bin/sh -c 'if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chown root:root $kubeletconf
|
||||
scored: false
|
||||
|
||||
- id: 4.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: "cat $kubeletconf"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: "{.authentication.anonymous.enabled}"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication: anonymous: enabled` to
|
||||
`false`.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
`--anonymous-auth=false`
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "cat $kubeletconf"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: "{.authorization.mode}"
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authorization.mode` to Webhook. If
|
||||
using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--authorization-mode=Webhook
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "cat $kubeletconf"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: "{.authentication.x509.clientCAFile}"
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication.x509.clientCAFile` to
|
||||
the location of the client CA file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.4
|
||||
text: "Verify that the --read-only-port argument is set to 0 (Manual)"
|
||||
audit: "cat $kubeletconf"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: "{.readOnlyPort}"
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
- flag: "--read-only-port"
|
||||
path: "{.readOnlyPort}"
|
||||
set: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `readOnlyPort` to 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--read-only-port=0
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Manual)"
|
||||
audit: "cat $kubeletconf"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: "{.streamingConnectionIdleTimeout}"
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: "{.streamingConnectionIdleTimeout}"
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `streamingConnectionIdleTimeout` to a
|
||||
value other than 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--streaming-connection-idle-timeout=5m
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.6
|
||||
text: "Ensure that the --protect-kernel-defaults argument is set to true (Automated)"
|
||||
audit: "cat $kubeletconf"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --protect-kernel-defaults
|
||||
path: "{.protectKernelDefaults}"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `protectKernelDefaults` to `true`.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--protect-kernel-defaults=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.7
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated)"
|
||||
audit: "cat $kubeletconf"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: "{.makeIPTablesUtilChains}"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --make-iptables-util-chains
|
||||
path: "{.makeIPTablesUtilChains}"
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `makeIPTablesUtilChains` to `true`.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove the --make-iptables-util-chains argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.8
|
||||
text: "Ensure that the --hostname-override argument is not set (Manual)"
|
||||
# This is one of those properties that can only be set as a command line argument.
|
||||
# To check if the property is set as expected, we need to parse the kubelet command
|
||||
# instead reading the Kubelet Configuration file.
|
||||
audit: "cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --hostname-override
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and remove the --hostname-override argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.9
|
||||
text: "Ensure that the eventRecordQPS argument is set to a level which ensures appropriate event capture (Manual)"
|
||||
audit: "cat $kubeletconf"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: "{.eventRecordQPS}"
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `eventRecordQPS` to an appropriate level.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.10
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Manual)"
|
||||
audit: "cat $kubeletconf"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cert-file
|
||||
path: "{.tlsCertFile}"
|
||||
- flag: --tls-private-key-file
|
||||
path: "{.tlsPrivateKeyFile}"
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCertFile` to the location
|
||||
of the certificate file to use to identify this Kubelet, and `tlsPrivateKeyFile`
|
||||
to the location of the corresponding private key file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameters in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.11
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Automated)"
|
||||
audit: "cat $kubeletconf"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: "{.rotateCertificates}"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: "{.rotateCertificates}"
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to add the line `rotateCertificates` to `true` or
|
||||
remove it altogether to use the default value.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove --rotate-certificates=false argument from the KUBELET_CERTIFICATE_ARGS
|
||||
variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.12
|
||||
text: "Verify that the RotateKubeletServerCertificate argument is set to true (Manual)"
|
||||
audit: "cat $kubeletconf"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: "{.featureGates.RotateKubeletServerCertificate}"
|
||||
compare:
|
||||
op: nothave
|
||||
value: false
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: "{.featureGates.RotateKubeletServerCertificate}"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and set the below parameter in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.13
|
||||
text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "cat $kubeletconf"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cipher-suites
|
||||
path: "{range .tlsCipherSuites[:]}{}{','}{end}"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCipherSuites` to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the --tls-cipher-suites parameter as follows, or to a subset of these values.
|
||||
--tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
269
cfg/cis-1.24-microk8s/policies.yaml
Normal file
269
cfg/cis-1.24-microk8s/policies.yaml
Normal file
@@ -0,0 +1,269 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.24"
|
||||
id: 5
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role :
|
||||
kubectl delete clusterrolebinding [name]
|
||||
scored: false
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize access to secrets (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to Secret objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Minimize access to create pods (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to pod objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.5
|
||||
text: "Ensure that default service accounts are not actively used. (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
||||
to the Kubernetes API server.
|
||||
Modify the configuration of each default service account to include this value
|
||||
automountServiceAccountToken: false
|
||||
scored: false
|
||||
|
||||
- id: 5.1.6
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Modify the definition of pods and service accounts which do not need to mount service
|
||||
account tokens to disable it.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.7
|
||||
text: "Avoid use of system:masters group (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.8
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Pod Security Standards"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Ensure that the cluster has at least one active policy control mechanism in place (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that either Pod Security Admission or an external policy control system is in place
|
||||
for every namespace which contains user workloads.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.2
|
||||
text: "Minimize the admission of privileged containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of privileged containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostPID` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostIPC` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.5
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostNetwork` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.6
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `.spec.allowPrivilegeEscalation` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.7
|
||||
text: "Minimize the admission of root containers (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a policy for each namespace in the cluster, ensuring that either `MustRunAsNonRoot`
|
||||
or `MustRunAs` with the range of UIDs not including 0, is set.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.8
|
||||
text: "Minimize the admission of containers with the NET_RAW capability (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with the `NET_RAW` capability.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.9
|
||||
text: "Minimize the admission of containers with added capabilities (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that `allowedCapabilities` is not present in policies for the cluster unless
|
||||
it is set to an empty array.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.10
|
||||
text: "Minimize the admission of containers with capabilities assigned (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the use of capabilities in applications running on your cluster. Where a namespace
|
||||
contains applications which do not require any Linux capabities to operate consider adding
|
||||
a PSP which forbids the admission of containers which do not drop all capabilities.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.11
|
||||
text: "Minimize the admission of Windows HostProcess containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers that have `.securityContext.windowsOptions.hostProcess` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.12
|
||||
text: "Minimize the admission of HostPath volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `hostPath` volumes.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.13
|
||||
text: "Minimize the admission of containers which use HostPorts (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers which use `hostPort` sections.
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "Network Policies and CNI"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure that the CNI in use supports NetworkPolicies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If the CNI plugin in use does not support network policies, consideration should be given to
|
||||
making use of a different plugin, or finding an alternate mechanism for restricting traffic
|
||||
in the Kubernetes cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.3.2
|
||||
text: "Ensure that all Namespaces have NetworkPolicies defined (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Prefer using Secrets as files over Secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If possible, rewrite application code to read Secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 5.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the Secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 5.5
|
||||
text: "Extensible Admission Control"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup image provenance.
|
||||
scored: false
|
||||
|
||||
- id: 5.7
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 5.7.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.2
|
||||
text: "Ensure that the seccomp profile is set to docker/default in your Pod definitions (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Use `securityContext` to enable the docker/default seccomp profile in your pod definitions.
|
||||
An example is as below:
|
||||
securityContext:
|
||||
seccompProfile:
|
||||
type: RuntimeDefault
|
||||
scored: false
|
||||
|
||||
- id: 5.7.3
|
||||
text: "Apply SecurityContext to your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply SecurityContexts to your Pods. For a
|
||||
suggested list of SecurityContexts, you may refer to the CIS Security Benchmark for Docker
|
||||
Containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.4
|
||||
text: "The default namespace should not be used (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
scored: false
|
||||
@@ -9,18 +9,18 @@ groups:
|
||||
text: "Control Plane Node Configuration Files"
|
||||
checks:
|
||||
- id: 1.1.1
|
||||
text: "Ensure that the API server pod specification file permissions are set to 644 or more restrictive (Automated)"
|
||||
text: "Ensure that the API server pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c permissions=%a $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the
|
||||
control plane node.
|
||||
For example, chmod 644 $apiserverconf
|
||||
For example, chmod 600 $apiserverconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.2
|
||||
|
||||
@@ -24,14 +24,16 @@ groups:
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
audit: '/bin/sh -c "if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; else echo \"File not found\"; fi"'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "File not found"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
@@ -45,8 +47,6 @@ groups:
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
- flag: "$proxykubeconfig"
|
||||
set: false
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
@@ -60,8 +60,6 @@ groups:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "$proxykubeconfig"
|
||||
set: false
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
@@ -97,7 +95,7 @@ groups:
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c permissions=%a $CAFILE; fi
|
||||
tests:
|
||||
@@ -114,7 +112,7 @@ groups:
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c %U:%G $CAFILE; fi
|
||||
tests:
|
||||
@@ -350,8 +348,12 @@ groups:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
compare:
|
||||
op: eq
|
||||
op: gte
|
||||
value: 0
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `eventRecordQPS` to an appropriate level.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
@@ -449,7 +451,7 @@ groups:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `TLSCipherSuites` to
|
||||
If using a Kubelet config file, edit the file to set `tlsCipherSuites` to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.25"
|
||||
version: "cis-1.24"
|
||||
id: 5
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
|
||||
@@ -25,16 +25,17 @@ groups:
|
||||
scored: true
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Scored)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c "if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; else echo \"File not found\"; fi"'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
set: true
|
||||
- flag: "File not found"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
@@ -48,8 +49,6 @@ groups:
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
- flag: "$proxykubeconfig"
|
||||
set: false
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
@@ -64,8 +63,6 @@ groups:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
set: true
|
||||
- flag: "$proxykubeconfig"
|
||||
set: false
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
@@ -106,7 +103,7 @@ groups:
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 644 or more restrictive (Scored)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c permissions=%a $CAFILE; fi
|
||||
tests:
|
||||
@@ -124,7 +121,7 @@ groups:
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Scored)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c %U:%G $CAFILE; fi
|
||||
tests:
|
||||
@@ -475,7 +472,7 @@ groups:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set TLSCipherSuites: to
|
||||
If using a Kubelet config file, edit the file to set tlsCipherSuites: to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
|
||||
@@ -25,10 +25,12 @@ groups:
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
audit: '/bin/sh -c "if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; else echo \"File not found\"; fi"'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "File not found"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
@@ -98,7 +100,7 @@ groups:
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c permissions=%a $CAFILE; fi
|
||||
tests:
|
||||
@@ -115,7 +117,7 @@ groups:
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}')
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c %U:%G $CAFILE; fi
|
||||
tests:
|
||||
@@ -450,7 +452,7 @@ groups:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set TLSCipherSuites: to
|
||||
If using a Kubelet config file, edit the file to set tlsCipherSuites: to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
|
||||
2
cfg/cis-1.7/config.yaml
Normal file
2
cfg/cis-1.7/config.yaml
Normal file
@@ -0,0 +1,2 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
60
cfg/cis-1.7/controlplane.yaml
Normal file
60
cfg/cis-1.7/controlplane.yaml
Normal file
@@ -0,0 +1,60 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.7"
|
||||
id: 3
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Client certificate authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be
|
||||
implemented in place of client certificates.
|
||||
scored: false
|
||||
- id: 3.1.2
|
||||
text: "Service account token authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be implemented
|
||||
in place of service account tokens.
|
||||
scored: false
|
||||
- id: 3.1.3
|
||||
text: "Bootstrap token authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be implemented
|
||||
in place of bootstrap tokens.
|
||||
scored: false
|
||||
|
||||
- id: 3.2
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that a minimal audit policy is created (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-policy-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Create an audit policy file for your cluster.
|
||||
scored: false
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the audit policy covers key security concerns (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the audit policy provided for the cluster and ensure that it covers
|
||||
at least the following areas,
|
||||
- Access to Secrets managed by the cluster. Care should be taken to only
|
||||
log Metadata for requests to Secrets, ConfigMaps, and TokenReviews, in
|
||||
order to avoid risk of logging sensitive data.
|
||||
- Modification of Pod and Deployment objects.
|
||||
- Use of `pods/exec`, `pods/portforward`, `pods/proxy` and `services/proxy`.
|
||||
For most requests, minimally logging at the Metadata level is recommended
|
||||
(the most basic level of logging).
|
||||
scored: false
|
||||
135
cfg/cis-1.7/etcd.yaml
Normal file
135
cfg/cis-1.7/etcd.yaml
Normal file
@@ -0,0 +1,135 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.7"
|
||||
id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
type: "etcd"
|
||||
groups:
|
||||
- id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
checks:
|
||||
- id: 2.1
|
||||
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--cert-file"
|
||||
env: "ETCD_CERT_FILE"
|
||||
- flag: "--key-file"
|
||||
env: "ETCD_KEY_FILE"
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure TLS encryption.
|
||||
Then, edit the etcd pod specification file /etc/kubernetes/manifests/etcd.yaml
|
||||
on the master node and set the below parameters.
|
||||
--cert-file=</path/to/ca-file>
|
||||
--key-file=</path/to/key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.2
|
||||
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--client-cert-auth"
|
||||
env: "ETCD_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--client-cert-auth="true"
|
||||
scored: true
|
||||
|
||||
- id: 2.3
|
||||
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --auto-tls parameter or set it to false.
|
||||
--auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.4
|
||||
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are
|
||||
set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--peer-cert-file"
|
||||
env: "ETCD_PEER_CERT_FILE"
|
||||
- flag: "--peer-key-file"
|
||||
env: "ETCD_PEER_KEY_FILE"
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure peer TLS encryption as appropriate
|
||||
for your etcd cluster.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameters.
|
||||
--peer-client-file=</path/to/peer-cert-file>
|
||||
--peer-key-file=</path/to/peer-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.5
|
||||
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--peer-client-cert-auth"
|
||||
env: "ETCD_PEER_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--peer-client-cert-auth=true
|
||||
scored: true
|
||||
|
||||
- id: 2.6
|
||||
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --peer-auto-tls parameter or set it to false.
|
||||
--peer-auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.7
|
||||
text: "Ensure that a unique Certificate Authority is used for etcd (Manual)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--trusted-ca-file"
|
||||
env: "ETCD_TRUSTED_CA_FILE"
|
||||
remediation: |
|
||||
[Manual test]
|
||||
Follow the etcd documentation and create a dedicated certificate authority setup for the
|
||||
etcd service.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameter.
|
||||
--trusted-ca-file=</path/to/ca-file>
|
||||
scored: false
|
||||
946
cfg/cis-1.7/master.yaml
Normal file
946
cfg/cis-1.7/master.yaml
Normal file
@@ -0,0 +1,946 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.7"
|
||||
id: 1
|
||||
text: "Control Plane Security Configuration"
|
||||
type: "master"
|
||||
groups:
|
||||
- id: 1.1
|
||||
text: "Control Plane Node Configuration Files"
|
||||
checks:
|
||||
- id: 1.1.1
|
||||
text: "Ensure that the API server pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c permissions=%a $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the
|
||||
control plane node.
|
||||
For example, chmod 600 $apiserverconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.2
|
||||
text: "Ensure that the API server pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c %U:%G $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $apiserverconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.3
|
||||
text: "Ensure that the controller manager pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c permissions=%a $controllermanagerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 $controllermanagerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.4
|
||||
text: "Ensure that the controller manager pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c %U:%G $controllermanagerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $controllermanagerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.5
|
||||
text: "Ensure that the scheduler pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c permissions=%a $schedulerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 $schedulerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.6
|
||||
text: "Ensure that the scheduler pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c %U:%G $schedulerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $schedulerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.7
|
||||
text: "Ensure that the etcd pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then find $etcdconf -name '*etcd*' | xargs stat -c permissions=%a; fi'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $etcdconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.8
|
||||
text: "Ensure that the etcd pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then find $etcdconf -name '*etcd*' | xargs stat -c %U:%G; fi'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $etcdconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.9
|
||||
text: "Ensure that the Container Network Interface file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: |
|
||||
ps -ef | grep $kubeletbin | grep -- --cni-conf-dir | sed 's%.*cni-conf-dir[= ]\([^ ]*\).*%\1%' | xargs -I{} find {} -mindepth 1 | xargs --no-run-if-empty stat -c permissions=%a
|
||||
find /var/lib/cni/networks -type f 2> /dev/null | xargs --no-run-if-empty stat -c permissions=%a
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 <path/to/cni/files>
|
||||
scored: false
|
||||
|
||||
- id: 1.1.10
|
||||
text: "Ensure that the Container Network Interface file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
ps -ef | grep $kubeletbin | grep -- --cni-conf-dir | sed 's%.*cni-conf-dir[= ]\([^ ]*\).*%\1%' | xargs -I{} find {} -mindepth 1 | xargs --no-run-if-empty stat -c %U:%G
|
||||
find /var/lib/cni/networks -type f 2> /dev/null | xargs --no-run-if-empty stat -c %U:%G
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root <path/to/cni/files>
|
||||
scored: false
|
||||
|
||||
- id: 1.1.11
|
||||
text: "Ensure that the etcd data directory permissions are set to 700 or more restrictive (Automated)"
|
||||
audit: |
|
||||
DATA_DIR=''
|
||||
for d in $(ps -ef | grep $etcdbin | grep -- --data-dir | sed 's%.*data-dir[= ]\([^ ]*\).*%\1%'); do
|
||||
if test -d "$d"; then DATA_DIR="$d"; fi
|
||||
done
|
||||
if ! test -d "$DATA_DIR"; then DATA_DIR=$etcddatadir; fi
|
||||
stat -c permissions=%a "$DATA_DIR"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "700"
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above). For example,
|
||||
chmod 700 /var/lib/etcd
|
||||
scored: true
|
||||
|
||||
- id: 1.1.12
|
||||
text: "Ensure that the etcd data directory ownership is set to etcd:etcd (Automated)"
|
||||
audit: |
|
||||
DATA_DIR=''
|
||||
for d in $(ps -ef | grep $etcdbin | grep -- --data-dir | sed 's%.*data-dir[= ]\([^ ]*\).*%\1%'); do
|
||||
if test -d "$d"; then DATA_DIR="$d"; fi
|
||||
done
|
||||
if ! test -d "$DATA_DIR"; then DATA_DIR=$etcddatadir; fi
|
||||
stat -c %U:%G "$DATA_DIR"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "etcd:etcd"
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above).
|
||||
For example, chown etcd:etcd /var/lib/etcd
|
||||
scored: true
|
||||
|
||||
- id: 1.1.13
|
||||
text: "Ensure that the admin.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /etc/kubernetes/admin.conf; then stat -c permissions=%a /etc/kubernetes/admin.conf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 /etc/kubernetes/admin.conf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.14
|
||||
text: "Ensure that the admin.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /etc/kubernetes/admin.conf; then stat -c %U:%G /etc/kubernetes/admin.conf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root /etc/kubernetes/admin.conf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.15
|
||||
text: "Ensure that the scheduler.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerkubeconfig; then stat -c permissions=%a $schedulerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $schedulerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.16
|
||||
text: "Ensure that the scheduler.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerkubeconfig; then stat -c %U:%G $schedulerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $schedulerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.17
|
||||
text: "Ensure that the controller-manager.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerkubeconfig; then stat -c permissions=%a $controllermanagerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $controllermanagerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.18
|
||||
text: "Ensure that the controller-manager.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerkubeconfig; then stat -c %U:%G $controllermanagerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $controllermanagerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.19
|
||||
text: "Ensure that the Kubernetes PKI directory and file ownership is set to root:root (Automated)"
|
||||
audit: "find /etc/kubernetes/pki/ | xargs stat -c %U:%G"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown -R root:root /etc/kubernetes/pki/
|
||||
scored: true
|
||||
|
||||
- id: 1.1.20
|
||||
text: "Ensure that the Kubernetes PKI certificate file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: "find /etc/kubernetes/pki/ -name '*.crt' | xargs stat -c permissions=%a"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod -R 600 /etc/kubernetes/pki/*.crt
|
||||
scored: false
|
||||
|
||||
- id: 1.1.21
|
||||
text: "Ensure that the Kubernetes PKI key file permissions are set to 600 (Manual)"
|
||||
audit: "find /etc/kubernetes/pki/ -name '*.key' | xargs stat -c permissions=%a"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod -R 600 /etc/kubernetes/pki/*.key
|
||||
scored: false
|
||||
|
||||
- id: 1.2
|
||||
text: "API Server"
|
||||
checks:
|
||||
- id: 1.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--anonymous-auth=false
|
||||
scored: false
|
||||
|
||||
- id: 1.2.2
|
||||
text: "Ensure that the --token-auth-file parameter is not set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--token-auth-file"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and configure alternate mechanisms for authentication. Then,
|
||||
edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and remove the --token-auth-file=<filename> parameter.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.3
|
||||
text: "Ensure that the --DenyServiceExternalIPs is set (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "DenyServiceExternalIPs"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and add the `DenyServiceExternalIPs` plugin
|
||||
to the enabled admission plugins, as such --enable-admission-plugin=DenyServiceExternalIPs.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.4
|
||||
text: "Ensure that the --kubelet-client-certificate and --kubelet-client-key arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--kubelet-client-certificate"
|
||||
- flag: "--kubelet-client-key"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the
|
||||
apiserver and kubelets. Then, edit API server pod specification file
|
||||
$apiserverconf on the control plane node and set the
|
||||
kubelet client certificate and key parameters as below.
|
||||
--kubelet-client-certificate=<path/to/client-certificate-file>
|
||||
--kubelet-client-key=<path/to/client-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.5
|
||||
text: "Ensure that the --kubelet-certificate-authority argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--kubelet-certificate-authority"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup the TLS connection between
|
||||
the apiserver and kubelets. Then, edit the API server pod specification file
|
||||
$apiserverconf on the control plane node and set the
|
||||
--kubelet-certificate-authority parameter to the path to the cert file for the certificate authority.
|
||||
--kubelet-certificate-authority=<ca-string>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.6
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "AlwaysAllow"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to values other than AlwaysAllow.
|
||||
One such example could be as below.
|
||||
--authorization-mode=RBAC
|
||||
scored: true
|
||||
|
||||
- id: 1.2.7
|
||||
text: "Ensure that the --authorization-mode argument includes Node (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "Node"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to a value that includes Node.
|
||||
--authorization-mode=Node,RBAC
|
||||
scored: true
|
||||
|
||||
- id: 1.2.8
|
||||
text: "Ensure that the --authorization-mode argument includes RBAC (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "RBAC"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to a value that includes RBAC,
|
||||
for example `--authorization-mode=Node,RBAC`.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.9
|
||||
text: "Ensure that the admission control plugin EventRateLimit is set (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "EventRateLimit"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set the desired limits in a configuration file.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
and set the below parameters.
|
||||
--enable-admission-plugins=...,EventRateLimit,...
|
||||
--admission-control-config-file=<path/to/configuration/file>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.10
|
||||
text: "Ensure that the admission control plugin AlwaysAdmit is not set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAdmit
|
||||
- flag: "--enable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and either remove the --enable-admission-plugins parameter, or set it to a
|
||||
value that does not include AlwaysAdmit.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.11
|
||||
text: "Ensure that the admission control plugin AlwaysPullImages is set (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "AlwaysPullImages"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to include
|
||||
AlwaysPullImages.
|
||||
--enable-admission-plugins=...,AlwaysPullImages,...
|
||||
scored: false
|
||||
|
||||
- id: 1.2.12
|
||||
text: "Ensure that the admission control plugin SecurityContextDeny is set if PodSecurityPolicy is not used (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "SecurityContextDeny"
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "PodSecurityPolicy"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to include
|
||||
SecurityContextDeny, unless PodSecurityPolicy is already in place.
|
||||
--enable-admission-plugins=...,SecurityContextDeny,...
|
||||
scored: false
|
||||
|
||||
- id: 1.2.13
|
||||
text: "Ensure that the admission control plugin ServiceAccount is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "ServiceAccount"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and create ServiceAccount objects as per your environment.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and ensure that the --disable-admission-plugins parameter is set to a
|
||||
value that does not include ServiceAccount.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.14
|
||||
text: "Ensure that the admission control plugin NamespaceLifecycle is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "NamespaceLifecycle"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --disable-admission-plugins parameter to
|
||||
ensure it does not include NamespaceLifecycle.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.15
|
||||
text: "Ensure that the admission control plugin NodeRestriction is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "NodeRestriction"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure NodeRestriction plug-in on kubelets.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to a
|
||||
value that includes NodeRestriction.
|
||||
--enable-admission-plugins=...,NodeRestriction,...
|
||||
scored: true
|
||||
|
||||
- id: 1.2.16
|
||||
text: "Ensure that the --secure-port argument is not set to 0 - NoteThis recommendation is obsolete and will be deleted per the consensus process (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--secure-port"
|
||||
compare:
|
||||
op: gt
|
||||
value: 0
|
||||
- flag: "--secure-port"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and either remove the --secure-port parameter or
|
||||
set it to a different (non-zero) desired port.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.17
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.2.18
|
||||
text: "Ensure that the --audit-log-path argument is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-path"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-path parameter to a suitable path and
|
||||
file where you would like audit logs to be written, for example,
|
||||
--audit-log-path=/var/log/apiserver/audit.log
|
||||
scored: true
|
||||
|
||||
- id: 1.2.19
|
||||
text: "Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxage"
|
||||
compare:
|
||||
op: gte
|
||||
value: 30
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxage parameter to 30
|
||||
or as an appropriate number of days, for example,
|
||||
--audit-log-maxage=30
|
||||
scored: true
|
||||
|
||||
- id: 1.2.20
|
||||
text: "Ensure that the --audit-log-maxbackup argument is set to 10 or as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxbackup"
|
||||
compare:
|
||||
op: gte
|
||||
value: 10
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxbackup parameter to 10 or to an appropriate
|
||||
value. For example,
|
||||
--audit-log-maxbackup=10
|
||||
scored: true
|
||||
|
||||
- id: 1.2.21
|
||||
text: "Ensure that the --audit-log-maxsize argument is set to 100 or as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxsize"
|
||||
compare:
|
||||
op: gte
|
||||
value: 100
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxsize parameter to an appropriate size in MB.
|
||||
For example, to set it as 100 MB, --audit-log-maxsize=100
|
||||
scored: true
|
||||
|
||||
- id: 1.2.22
|
||||
text: "Ensure that the --request-timeout argument is set as appropriate (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
type: manual
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
and set the below parameter as appropriate and if needed.
|
||||
For example, --request-timeout=300s
|
||||
scored: false
|
||||
|
||||
- id: 1.2.23
|
||||
text: "Ensure that the --service-account-lookup argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--service-account-lookup"
|
||||
set: false
|
||||
- flag: "--service-account-lookup"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--service-account-lookup=true
|
||||
Alternatively, you can delete the --service-account-lookup parameter from this file so
|
||||
that the default takes effect.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.24
|
||||
text: "Ensure that the --service-account-key-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-key-file"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --service-account-key-file parameter
|
||||
to the public key file for service accounts. For example,
|
||||
--service-account-key-file=<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.25
|
||||
text: "Ensure that the --etcd-certfile and --etcd-keyfile arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--etcd-certfile"
|
||||
- flag: "--etcd-keyfile"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the etcd certificate and key file parameters.
|
||||
--etcd-certfile=<path/to/client-certificate-file>
|
||||
--etcd-keyfile=<path/to/client-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.26
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--tls-cert-file"
|
||||
- flag: "--tls-private-key-file"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the TLS certificate and private key file parameters.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.27
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--client-ca-file"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the client certificate authority file.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.28
|
||||
text: "Ensure that the --etcd-cafile argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--etcd-cafile"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the etcd certificate authority file parameter.
|
||||
--etcd-cafile=<path/to/ca-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.29
|
||||
text: "Ensure that the --encryption-provider-config argument is set as appropriate (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--encryption-provider-config"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --encryption-provider-config parameter to the path of that file.
|
||||
For example, --encryption-provider-config=</path/to/EncryptionConfig/File>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.30
|
||||
text: "Ensure that encryption providers are appropriately configured (Manual)"
|
||||
audit: |
|
||||
ENCRYPTION_PROVIDER_CONFIG=$(ps -ef | grep $apiserverbin | grep -- --encryption-provider-config | sed 's%.*encryption-provider-config[= ]\([^ ]*\).*%\1%')
|
||||
if test -e $ENCRYPTION_PROVIDER_CONFIG; then grep -A1 'providers:' $ENCRYPTION_PROVIDER_CONFIG | tail -n1 | grep -o "[A-Za-z]*" | sed 's/^/provider=/'; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "provider"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "aescbc,kms,secretbox"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
||||
In this file, choose aescbc, kms or secretbox as the encryption provider.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.31
|
||||
text: "Ensure that the API Server only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--tls-cipher-suites"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384"
|
||||
remediation: |
|
||||
Edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml
|
||||
on the control plane node and set the below parameter.
|
||||
--tls-cipher-suites=TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
|
||||
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
|
||||
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
|
||||
TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
|
||||
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
|
||||
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,
|
||||
TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384
|
||||
scored: false
|
||||
|
||||
- id: 1.3
|
||||
text: "Controller Manager"
|
||||
checks:
|
||||
- id: 1.3.1
|
||||
text: "Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Manual)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--terminated-pod-gc-threshold"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --terminated-pod-gc-threshold to an appropriate threshold,
|
||||
for example, --terminated-pod-gc-threshold=10
|
||||
scored: false
|
||||
|
||||
- id: 1.3.2
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.3.3
|
||||
text: "Ensure that the --use-service-account-credentials argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--use-service-account-credentials"
|
||||
compare:
|
||||
op: noteq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node to set the below parameter.
|
||||
--use-service-account-credentials=true
|
||||
scored: true
|
||||
|
||||
- id: 1.3.4
|
||||
text: "Ensure that the --service-account-private-key-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-private-key-file"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --service-account-private-key-file parameter
|
||||
to the private key file for service accounts.
|
||||
--service-account-private-key-file=<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.3.5
|
||||
text: "Ensure that the --root-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--root-ca-file"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --root-ca-file parameter to the certificate bundle file`.
|
||||
--root-ca-file=<path/to/file>
|
||||
scored: true
|
||||
|
||||
- id: 1.3.6
|
||||
text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--feature-gates"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "RotateKubeletServerCertificate=false"
|
||||
set: true
|
||||
- flag: "--feature-gates"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --feature-gates parameter to include RotateKubeletServerCertificate=true.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
scored: true
|
||||
|
||||
- id: 1.3.7
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and ensure the correct value for the --bind-address parameter
|
||||
scored: true
|
||||
|
||||
- id: 1.4
|
||||
text: "Scheduler"
|
||||
checks:
|
||||
- id: 1.4.1
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $schedulerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Scheduler pod specification file $schedulerconf file
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.4.2
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "/bin/ps -ef | grep $schedulerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Scheduler pod specification file $schedulerconf
|
||||
on the control plane node and ensure the correct value for the --bind-address parameter
|
||||
scored: true
|
||||
455
cfg/cis-1.7/node.yaml
Normal file
455
cfg/cis-1.7/node.yaml
Normal file
@@ -0,0 +1,455 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.7"
|
||||
id: 4
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the kubelet service file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c permissions=%a $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chmod 600 $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c "if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; else echo \"File not found\"; fi"'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "File not found"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
text: "If proxy kubeconfig file exists ensure permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c permissions=%a $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
set: true
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $proxykubeconfig
|
||||
scored: false
|
||||
|
||||
- id: 4.1.4
|
||||
text: "If proxy kubeconfig file exists ensure ownership is set to root:root (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c %U:%G $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
scored: false
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c permissions=%a $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c %U:%G $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c permissions=%a $CAFILE; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command to modify the file permissions of the
|
||||
--client-ca-file chmod 600 <filename>
|
||||
scored: false
|
||||
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c %U:%G $CAFILE; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
compare:
|
||||
op: eq
|
||||
value: root:root
|
||||
remediation: |
|
||||
Run the following command to modify the ownership of the --client-ca-file.
|
||||
chown root:root <filename>
|
||||
scored: false
|
||||
|
||||
- id: 4.1.9
|
||||
text: "If the kubelet config.yaml configuration file is being used validate permissions set to 600 or more restrictive (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c permissions=%a $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chmod 600 $kubeletconf
|
||||
scored: false
|
||||
|
||||
- id: 4.1.10
|
||||
text: "If the kubelet config.yaml configuration file is being used validate file ownership is set to root:root (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chown root:root $kubeletconf
|
||||
scored: false
|
||||
|
||||
- id: 4.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: '{.authentication.anonymous.enabled}'
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication: anonymous: enabled` to
|
||||
`false`.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
`--anonymous-auth=false`
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: '{.authorization.mode}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authorization.mode` to Webhook. If
|
||||
using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--authorization-mode=Webhook
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: '{.authentication.x509.clientCAFile}'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication.x509.clientCAFile` to
|
||||
the location of the client CA file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.4
|
||||
text: "Verify that the --read-only-port argument is set to 0 (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
set: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `readOnlyPort` to 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--read-only-port=0
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `streamingConnectionIdleTimeout` to a
|
||||
value other than 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--streaming-connection-idle-timeout=5m
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.6
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `makeIPTablesUtilChains` to `true`.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove the --make-iptables-util-chains argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.7
|
||||
text: "Ensure that the --hostname-override argument is not set (Manual)"
|
||||
# This is one of those properties that can only be set as a command line argument.
|
||||
# To check if the property is set as expected, we need to parse the kubelet command
|
||||
# instead reading the Kubelet Configuration file.
|
||||
audit: "/bin/ps -fC $kubeletbin "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --hostname-override
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and remove the --hostname-override argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.8
|
||||
text: "Ensure that the eventRecordQPS argument is set to a level which ensures appropriate event capture (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
compare:
|
||||
op: gte
|
||||
value: 0
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `eventRecordQPS` to an appropriate level.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.9
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cert-file
|
||||
path: '{.tlsCertFile}'
|
||||
- flag: --tls-private-key-file
|
||||
path: '{.tlsPrivateKeyFile}'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCertFile` to the location
|
||||
of the certificate file to use to identify this Kubelet, and `tlsPrivateKeyFile`
|
||||
to the location of the corresponding private key file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameters in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.10
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to add the line `rotateCertificates` to `true` or
|
||||
remove it altogether to use the default value.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove --rotate-certificates=false argument from the KUBELET_CERTIFICATE_ARGS
|
||||
variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.11
|
||||
text: "Verify that the RotateKubeletServerCertificate argument is set to true (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: false
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and set the below parameter in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.12
|
||||
text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cipher-suites
|
||||
path: '{range .tlsCipherSuites[:]}{}{'',''}{end}'
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCipherSuites` to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the --tls-cipher-suites parameter as follows, or to a subset of these values.
|
||||
--tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.13
|
||||
text: "Ensure that a limit is set on pod PIDs (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --pod-max-pids
|
||||
path: '{.podPidsLimit}'
|
||||
remediation: |
|
||||
Decide on an appropriate level for this parameter and set it,
|
||||
either via the --pod-max-pids command line parameter or the PodPidsLimit configuration file setting.
|
||||
scored: false
|
||||
304
cfg/cis-1.7/policies.yaml
Normal file
304
cfg/cis-1.7/policies.yaml
Normal file
@@ -0,0 +1,304 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.7"
|
||||
id: 5
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role :
|
||||
kubectl delete clusterrolebinding [name]
|
||||
scored: false
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize access to secrets (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to Secret objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Minimize access to create pods (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to pod objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.5
|
||||
text: "Ensure that default service accounts are not actively used. (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
||||
to the Kubernetes API server.
|
||||
Modify the configuration of each default service account to include this value
|
||||
automountServiceAccountToken: false
|
||||
scored: false
|
||||
|
||||
- id: 5.1.6
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Modify the definition of pods and service accounts which do not need to mount service
|
||||
account tokens to disable it.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.7
|
||||
text: "Avoid use of system:masters group (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.8
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.9
|
||||
text: "Minimize access to create persistent volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to PersistentVolume objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.10
|
||||
text: "Minimize access to the proxy sub-resource of nodes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the proxy sub-resource of node objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.11
|
||||
text: "Minimize access to the approval sub-resource of certificatesigningrequests objects (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the approval sub-resource of certificatesigningrequest objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.12
|
||||
text: "Minimize access to webhook configuration objects (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the validatingwebhookconfigurations or mutatingwebhookconfigurations objects
|
||||
scored: false
|
||||
|
||||
- id: 5.1.13
|
||||
text: "Minimize access to the service account token creation (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the token sub-resource of serviceaccount objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Pod Security Standards"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Ensure that the cluster has at least one active policy control mechanism in place (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that either Pod Security Admission or an external policy control system is in place
|
||||
for every namespace which contains user workloads.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.2
|
||||
text: "Minimize the admission of privileged containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of privileged containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostPID` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostIPC` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.5
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostNetwork` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.6
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `.spec.allowPrivilegeEscalation` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.7
|
||||
text: "Minimize the admission of root containers (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a policy for each namespace in the cluster, ensuring that either `MustRunAsNonRoot`
|
||||
or `MustRunAs` with the range of UIDs not including 0, is set.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.8
|
||||
text: "Minimize the admission of containers with the NET_RAW capability (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with the `NET_RAW` capability.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.9
|
||||
text: "Minimize the admission of containers with added capabilities (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that `allowedCapabilities` is not present in policies for the cluster unless
|
||||
it is set to an empty array.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.10
|
||||
text: "Minimize the admission of containers with capabilities assigned (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the use of capabilites in applications running on your cluster. Where a namespace
|
||||
contains applicaions which do not require any Linux capabities to operate consider adding
|
||||
a PSP which forbids the admission of containers which do not drop all capabilities.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.11
|
||||
text: "Minimize the admission of Windows HostProcess containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers that have `.securityContext.windowsOptions.hostProcess` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.12
|
||||
text: "Minimize the admission of HostPath volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `hostPath` volumes.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.13
|
||||
text: "Minimize the admission of containers which use HostPorts (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers which use `hostPort` sections.
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "Network Policies and CNI"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure that the CNI in use supports NetworkPolicies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If the CNI plugin in use does not support network policies, consideration should be given to
|
||||
making use of a different plugin, or finding an alternate mechanism for restricting traffic
|
||||
in the Kubernetes cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.3.2
|
||||
text: "Ensure that all Namespaces have NetworkPolicies defined (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Prefer using Secrets as files over Secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If possible, rewrite application code to read Secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 5.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the Secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 5.5
|
||||
text: "Extensible Admission Control"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup image provenance.
|
||||
scored: false
|
||||
|
||||
- id: 5.7
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 5.7.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.2
|
||||
text: "Ensure that the seccomp profile is set to docker/default in your Pod definitions (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Use `securityContext` to enable the docker/default seccomp profile in your pod definitions.
|
||||
An example is as below:
|
||||
securityContext:
|
||||
seccompProfile:
|
||||
type: RuntimeDefault
|
||||
scored: false
|
||||
|
||||
- id: 5.7.3
|
||||
text: "Apply SecurityContext to your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply SecurityContexts to your Pods. For a
|
||||
suggested list of SecurityContexts, you may refer to the CIS Security Benchmark for Docker
|
||||
Containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.4
|
||||
text: "The default namespace should not be used (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
scored: false
|
||||
2
cfg/cis-1.8/config.yaml
Normal file
2
cfg/cis-1.8/config.yaml
Normal file
@@ -0,0 +1,2 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
60
cfg/cis-1.8/controlplane.yaml
Normal file
60
cfg/cis-1.8/controlplane.yaml
Normal file
@@ -0,0 +1,60 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.8"
|
||||
id: 3
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Client certificate authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be
|
||||
implemented in place of client certificates.
|
||||
scored: false
|
||||
- id: 3.1.2
|
||||
text: "Service account token authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be implemented
|
||||
in place of service account tokens.
|
||||
scored: false
|
||||
- id: 3.1.3
|
||||
text: "Bootstrap token authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be implemented
|
||||
in place of bootstrap tokens.
|
||||
scored: false
|
||||
|
||||
- id: 3.2
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that a minimal audit policy is created (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-policy-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Create an audit policy file for your cluster.
|
||||
scored: false
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the audit policy covers key security concerns (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the audit policy provided for the cluster and ensure that it covers
|
||||
at least the following areas,
|
||||
- Access to Secrets managed by the cluster. Care should be taken to only
|
||||
log Metadata for requests to Secrets, ConfigMaps, and TokenReviews, in
|
||||
order to avoid risk of logging sensitive data.
|
||||
- Modification of Pod and Deployment objects.
|
||||
- Use of `pods/exec`, `pods/portforward`, `pods/proxy` and `services/proxy`.
|
||||
For most requests, minimally logging at the Metadata level is recommended
|
||||
(the most basic level of logging).
|
||||
scored: false
|
||||
135
cfg/cis-1.8/etcd.yaml
Normal file
135
cfg/cis-1.8/etcd.yaml
Normal file
@@ -0,0 +1,135 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.8"
|
||||
id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
type: "etcd"
|
||||
groups:
|
||||
- id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
checks:
|
||||
- id: 2.1
|
||||
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--cert-file"
|
||||
env: "ETCD_CERT_FILE"
|
||||
- flag: "--key-file"
|
||||
env: "ETCD_KEY_FILE"
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure TLS encryption.
|
||||
Then, edit the etcd pod specification file /etc/kubernetes/manifests/etcd.yaml
|
||||
on the master node and set the below parameters.
|
||||
--cert-file=</path/to/ca-file>
|
||||
--key-file=</path/to/key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.2
|
||||
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--client-cert-auth"
|
||||
env: "ETCD_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--client-cert-auth="true"
|
||||
scored: true
|
||||
|
||||
- id: 2.3
|
||||
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --auto-tls parameter or set it to false.
|
||||
--auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.4
|
||||
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are
|
||||
set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--peer-cert-file"
|
||||
env: "ETCD_PEER_CERT_FILE"
|
||||
- flag: "--peer-key-file"
|
||||
env: "ETCD_PEER_KEY_FILE"
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure peer TLS encryption as appropriate
|
||||
for your etcd cluster.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameters.
|
||||
--peer-client-file=</path/to/peer-cert-file>
|
||||
--peer-key-file=</path/to/peer-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.5
|
||||
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--peer-client-cert-auth"
|
||||
env: "ETCD_PEER_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--peer-client-cert-auth=true
|
||||
scored: true
|
||||
|
||||
- id: 2.6
|
||||
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --peer-auto-tls parameter or set it to false.
|
||||
--peer-auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.7
|
||||
text: "Ensure that a unique Certificate Authority is used for etcd (Manual)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--trusted-ca-file"
|
||||
env: "ETCD_TRUSTED_CA_FILE"
|
||||
remediation: |
|
||||
[Manual test]
|
||||
Follow the etcd documentation and create a dedicated certificate authority setup for the
|
||||
etcd service.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameter.
|
||||
--trusted-ca-file=</path/to/ca-file>
|
||||
scored: false
|
||||
928
cfg/cis-1.8/master.yaml
Normal file
928
cfg/cis-1.8/master.yaml
Normal file
@@ -0,0 +1,928 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.8"
|
||||
id: 1
|
||||
text: "Control Plane Security Configuration"
|
||||
type: "master"
|
||||
groups:
|
||||
- id: 1.1
|
||||
text: "Control Plane Node Configuration Files"
|
||||
checks:
|
||||
- id: 1.1.1
|
||||
text: "Ensure that the API server pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c permissions=%a $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the
|
||||
control plane node.
|
||||
For example, chmod 600 $apiserverconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.2
|
||||
text: "Ensure that the API server pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c %U:%G $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $apiserverconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.3
|
||||
text: "Ensure that the controller manager pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c permissions=%a $controllermanagerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 $controllermanagerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.4
|
||||
text: "Ensure that the controller manager pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c %U:%G $controllermanagerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $controllermanagerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.5
|
||||
text: "Ensure that the scheduler pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c permissions=%a $schedulerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 $schedulerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.6
|
||||
text: "Ensure that the scheduler pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c %U:%G $schedulerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $schedulerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.7
|
||||
text: "Ensure that the etcd pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then find $etcdconf -name '*etcd*' | xargs stat -c permissions=%a; fi'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $etcdconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.8
|
||||
text: "Ensure that the etcd pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then find $etcdconf -name '*etcd*' | xargs stat -c %U:%G; fi'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $etcdconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.9
|
||||
text: "Ensure that the Container Network Interface file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: |
|
||||
ps -ef | grep $kubeletbin | grep -- --cni-conf-dir | sed 's%.*cni-conf-dir[= ]\([^ ]*\).*%\1%' | xargs -I{} find {} -mindepth 1 | xargs --no-run-if-empty stat -c permissions=%a
|
||||
find /var/lib/cni/networks -type f 2> /dev/null | xargs --no-run-if-empty stat -c permissions=%a
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 <path/to/cni/files>
|
||||
scored: false
|
||||
|
||||
- id: 1.1.10
|
||||
text: "Ensure that the Container Network Interface file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
ps -ef | grep $kubeletbin | grep -- --cni-conf-dir | sed 's%.*cni-conf-dir[= ]\([^ ]*\).*%\1%' | xargs -I{} find {} -mindepth 1 | xargs --no-run-if-empty stat -c %U:%G
|
||||
find /var/lib/cni/networks -type f 2> /dev/null | xargs --no-run-if-empty stat -c %U:%G
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root <path/to/cni/files>
|
||||
scored: false
|
||||
|
||||
- id: 1.1.11
|
||||
text: "Ensure that the etcd data directory permissions are set to 700 or more restrictive (Automated)"
|
||||
audit: |
|
||||
DATA_DIR=''
|
||||
for d in $(ps -ef | grep $etcdbin | grep -- --data-dir | sed 's%.*data-dir[= ]\([^ ]*\).*%\1%'); do
|
||||
if test -d "$d"; then DATA_DIR="$d"; fi
|
||||
done
|
||||
if ! test -d "$DATA_DIR"; then DATA_DIR=$etcddatadir; fi
|
||||
stat -c permissions=%a "$DATA_DIR"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "700"
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above). For example,
|
||||
chmod 700 /var/lib/etcd
|
||||
scored: true
|
||||
|
||||
- id: 1.1.12
|
||||
text: "Ensure that the etcd data directory ownership is set to etcd:etcd (Automated)"
|
||||
audit: |
|
||||
DATA_DIR=''
|
||||
for d in $(ps -ef | grep $etcdbin | grep -- --data-dir | sed 's%.*data-dir[= ]\([^ ]*\).*%\1%'); do
|
||||
if test -d "$d"; then DATA_DIR="$d"; fi
|
||||
done
|
||||
if ! test -d "$DATA_DIR"; then DATA_DIR=$etcddatadir; fi
|
||||
stat -c %U:%G "$DATA_DIR"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "etcd:etcd"
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above).
|
||||
For example, chown etcd:etcd /var/lib/etcd
|
||||
scored: true
|
||||
|
||||
- id: 1.1.13
|
||||
text: "Ensure that the admin.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /etc/kubernetes/admin.conf; then stat -c permissions=%a /etc/kubernetes/admin.conf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 /etc/kubernetes/admin.conf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.14
|
||||
text: "Ensure that the admin.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /etc/kubernetes/admin.conf; then stat -c %U:%G /etc/kubernetes/admin.conf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root /etc/kubernetes/admin.conf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.15
|
||||
text: "Ensure that the scheduler.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerkubeconfig; then stat -c permissions=%a $schedulerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $schedulerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.16
|
||||
text: "Ensure that the scheduler.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerkubeconfig; then stat -c %U:%G $schedulerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $schedulerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.17
|
||||
text: "Ensure that the controller-manager.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerkubeconfig; then stat -c permissions=%a $controllermanagerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $controllermanagerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.18
|
||||
text: "Ensure that the controller-manager.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerkubeconfig; then stat -c %U:%G $controllermanagerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $controllermanagerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.19
|
||||
text: "Ensure that the Kubernetes PKI directory and file ownership is set to root:root (Automated)"
|
||||
audit: "find /etc/kubernetes/pki/ | xargs stat -c %U:%G"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown -R root:root /etc/kubernetes/pki/
|
||||
scored: true
|
||||
|
||||
- id: 1.1.20
|
||||
text: "Ensure that the Kubernetes PKI certificate file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: "find /etc/kubernetes/pki/ -name '*.crt' | xargs stat -c permissions=%a"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod -R 600 /etc/kubernetes/pki/*.crt
|
||||
scored: false
|
||||
|
||||
- id: 1.1.21
|
||||
text: "Ensure that the Kubernetes PKI key file permissions are set to 600 (Manual)"
|
||||
audit: "find /etc/kubernetes/pki/ -name '*.key' | xargs stat -c permissions=%a"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod -R 600 /etc/kubernetes/pki/*.key
|
||||
scored: false
|
||||
|
||||
- id: 1.2
|
||||
text: "API Server"
|
||||
checks:
|
||||
- id: 1.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--anonymous-auth=false
|
||||
scored: false
|
||||
|
||||
- id: 1.2.2
|
||||
text: "Ensure that the --token-auth-file parameter is not set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--token-auth-file"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and configure alternate mechanisms for authentication. Then,
|
||||
edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and remove the --token-auth-file=<filename> parameter.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.3
|
||||
text: "Ensure that the --DenyServiceExternalIPs is set (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "DenyServiceExternalIPs"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and add the `DenyServiceExternalIPs` plugin
|
||||
to the enabled admission plugins, as such --enable-admission-plugin=DenyServiceExternalIPs.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.4
|
||||
text: "Ensure that the --kubelet-client-certificate and --kubelet-client-key arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--kubelet-client-certificate"
|
||||
- flag: "--kubelet-client-key"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the
|
||||
apiserver and kubelets. Then, edit API server pod specification file
|
||||
$apiserverconf on the control plane node and set the
|
||||
kubelet client certificate and key parameters as below.
|
||||
--kubelet-client-certificate=<path/to/client-certificate-file>
|
||||
--kubelet-client-key=<path/to/client-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.5
|
||||
text: "Ensure that the --kubelet-certificate-authority argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--kubelet-certificate-authority"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup the TLS connection between
|
||||
the apiserver and kubelets. Then, edit the API server pod specification file
|
||||
$apiserverconf on the control plane node and set the
|
||||
--kubelet-certificate-authority parameter to the path to the cert file for the certificate authority.
|
||||
--kubelet-certificate-authority=<ca-string>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.6
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "AlwaysAllow"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to values other than AlwaysAllow.
|
||||
One such example could be as below.
|
||||
--authorization-mode=RBAC
|
||||
scored: true
|
||||
|
||||
- id: 1.2.7
|
||||
text: "Ensure that the --authorization-mode argument includes Node (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "Node"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to a value that includes Node.
|
||||
--authorization-mode=Node,RBAC
|
||||
scored: true
|
||||
|
||||
- id: 1.2.8
|
||||
text: "Ensure that the --authorization-mode argument includes RBAC (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "RBAC"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to a value that includes RBAC,
|
||||
for example `--authorization-mode=Node,RBAC`.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.9
|
||||
text: "Ensure that the admission control plugin EventRateLimit is set (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "EventRateLimit"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set the desired limits in a configuration file.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
and set the below parameters.
|
||||
--enable-admission-plugins=...,EventRateLimit,...
|
||||
--admission-control-config-file=<path/to/configuration/file>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.10
|
||||
text: "Ensure that the admission control plugin AlwaysAdmit is not set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAdmit
|
||||
- flag: "--enable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and either remove the --enable-admission-plugins parameter, or set it to a
|
||||
value that does not include AlwaysAdmit.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.11
|
||||
text: "Ensure that the admission control plugin AlwaysPullImages is set (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "AlwaysPullImages"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to include
|
||||
AlwaysPullImages.
|
||||
--enable-admission-plugins=...,AlwaysPullImages,...
|
||||
scored: false
|
||||
|
||||
- id: 1.2.12
|
||||
text: "Ensure that the admission control plugin SecurityContextDeny is set if PodSecurityPolicy is not used (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "SecurityContextDeny"
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "PodSecurityPolicy"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to include
|
||||
SecurityContextDeny, unless PodSecurityPolicy is already in place.
|
||||
--enable-admission-plugins=...,SecurityContextDeny,...
|
||||
scored: false
|
||||
|
||||
- id: 1.2.13
|
||||
text: "Ensure that the admission control plugin ServiceAccount is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "ServiceAccount"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and create ServiceAccount objects as per your environment.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and ensure that the --disable-admission-plugins parameter is set to a
|
||||
value that does not include ServiceAccount.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.14
|
||||
text: "Ensure that the admission control plugin NamespaceLifecycle is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "NamespaceLifecycle"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --disable-admission-plugins parameter to
|
||||
ensure it does not include NamespaceLifecycle.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.15
|
||||
text: "Ensure that the admission control plugin NodeRestriction is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "NodeRestriction"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure NodeRestriction plug-in on kubelets.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to a
|
||||
value that includes NodeRestriction.
|
||||
--enable-admission-plugins=...,NodeRestriction,...
|
||||
scored: true
|
||||
|
||||
- id: 1.2.16
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.2.17
|
||||
text: "Ensure that the --audit-log-path argument is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-path"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-path parameter to a suitable path and
|
||||
file where you would like audit logs to be written, for example,
|
||||
--audit-log-path=/var/log/apiserver/audit.log
|
||||
scored: true
|
||||
|
||||
- id: 1.2.18
|
||||
text: "Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxage"
|
||||
compare:
|
||||
op: gte
|
||||
value: 30
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxage parameter to 30
|
||||
or as an appropriate number of days, for example,
|
||||
--audit-log-maxage=30
|
||||
scored: true
|
||||
|
||||
- id: 1.2.19
|
||||
text: "Ensure that the --audit-log-maxbackup argument is set to 10 or as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxbackup"
|
||||
compare:
|
||||
op: gte
|
||||
value: 10
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxbackup parameter to 10 or to an appropriate
|
||||
value. For example,
|
||||
--audit-log-maxbackup=10
|
||||
scored: true
|
||||
|
||||
- id: 1.2.20
|
||||
text: "Ensure that the --audit-log-maxsize argument is set to 100 or as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxsize"
|
||||
compare:
|
||||
op: gte
|
||||
value: 100
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxsize parameter to an appropriate size in MB.
|
||||
For example, to set it as 100 MB, --audit-log-maxsize=100
|
||||
scored: true
|
||||
|
||||
- id: 1.2.21
|
||||
text: "Ensure that the --request-timeout argument is set as appropriate (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
type: manual
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
and set the below parameter as appropriate and if needed.
|
||||
For example, --request-timeout=300s
|
||||
scored: false
|
||||
|
||||
- id: 1.2.22
|
||||
text: "Ensure that the --service-account-lookup argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--service-account-lookup"
|
||||
set: false
|
||||
- flag: "--service-account-lookup"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--service-account-lookup=true
|
||||
Alternatively, you can delete the --service-account-lookup parameter from this file so
|
||||
that the default takes effect.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.23
|
||||
text: "Ensure that the --service-account-key-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-key-file"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --service-account-key-file parameter
|
||||
to the public key file for service accounts. For example,
|
||||
--service-account-key-file=<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.24
|
||||
text: "Ensure that the --etcd-certfile and --etcd-keyfile arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--etcd-certfile"
|
||||
- flag: "--etcd-keyfile"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the etcd certificate and key file parameters.
|
||||
--etcd-certfile=<path/to/client-certificate-file>
|
||||
--etcd-keyfile=<path/to/client-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.25
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--tls-cert-file"
|
||||
- flag: "--tls-private-key-file"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the TLS certificate and private key file parameters.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.26
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--client-ca-file"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the client certificate authority file.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.27
|
||||
text: "Ensure that the --etcd-cafile argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--etcd-cafile"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the etcd certificate authority file parameter.
|
||||
--etcd-cafile=<path/to/ca-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.28
|
||||
text: "Ensure that the --encryption-provider-config argument is set as appropriate (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--encryption-provider-config"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --encryption-provider-config parameter to the path of that file.
|
||||
For example, --encryption-provider-config=</path/to/EncryptionConfig/File>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.29
|
||||
text: "Ensure that encryption providers are appropriately configured (Manual)"
|
||||
audit: |
|
||||
ENCRYPTION_PROVIDER_CONFIG=$(ps -ef | grep $apiserverbin | grep -- --encryption-provider-config | sed 's%.*encryption-provider-config[= ]\([^ ]*\).*%\1%')
|
||||
if test -e $ENCRYPTION_PROVIDER_CONFIG; then grep -A1 'providers:' $ENCRYPTION_PROVIDER_CONFIG | tail -n1 | grep -o "[A-Za-z]*" | sed 's/^/provider=/'; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "provider"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "aescbc,kms,secretbox"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
||||
In this file, choose aescbc, kms or secretbox as the encryption provider.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.30
|
||||
text: "Ensure that the API Server only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--tls-cipher-suites"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384"
|
||||
remediation: |
|
||||
Edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml
|
||||
on the control plane node and set the below parameter.
|
||||
--tls-cipher-suites=TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
|
||||
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
|
||||
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
|
||||
TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
|
||||
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
|
||||
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,
|
||||
TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384
|
||||
scored: false
|
||||
|
||||
- id: 1.3
|
||||
text: "Controller Manager"
|
||||
checks:
|
||||
- id: 1.3.1
|
||||
text: "Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Manual)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--terminated-pod-gc-threshold"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --terminated-pod-gc-threshold to an appropriate threshold,
|
||||
for example, --terminated-pod-gc-threshold=10
|
||||
scored: false
|
||||
|
||||
- id: 1.3.2
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.3.3
|
||||
text: "Ensure that the --use-service-account-credentials argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--use-service-account-credentials"
|
||||
compare:
|
||||
op: noteq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node to set the below parameter.
|
||||
--use-service-account-credentials=true
|
||||
scored: true
|
||||
|
||||
- id: 1.3.4
|
||||
text: "Ensure that the --service-account-private-key-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-private-key-file"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --service-account-private-key-file parameter
|
||||
to the private key file for service accounts.
|
||||
--service-account-private-key-file=<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.3.5
|
||||
text: "Ensure that the --root-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--root-ca-file"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --root-ca-file parameter to the certificate bundle file`.
|
||||
--root-ca-file=<path/to/file>
|
||||
scored: true
|
||||
|
||||
- id: 1.3.6
|
||||
text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--feature-gates"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "RotateKubeletServerCertificate=false"
|
||||
set: true
|
||||
- flag: "--feature-gates"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --feature-gates parameter to include RotateKubeletServerCertificate=true.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
scored: true
|
||||
|
||||
- id: 1.3.7
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and ensure the correct value for the --bind-address parameter
|
||||
scored: true
|
||||
|
||||
- id: 1.4
|
||||
text: "Scheduler"
|
||||
checks:
|
||||
- id: 1.4.1
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $schedulerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Scheduler pod specification file $schedulerconf file
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.4.2
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "/bin/ps -ef | grep $schedulerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Scheduler pod specification file $schedulerconf
|
||||
on the control plane node and ensure the correct value for the --bind-address parameter
|
||||
scored: true
|
||||
455
cfg/cis-1.8/node.yaml
Normal file
455
cfg/cis-1.8/node.yaml
Normal file
@@ -0,0 +1,455 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.8"
|
||||
id: 4
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the kubelet service file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c permissions=%a $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chmod 600 $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c "if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; else echo \"File not found\"; fi"'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "File not found"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
text: "If proxy kubeconfig file exists ensure permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c permissions=%a $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
set: true
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $proxykubeconfig
|
||||
scored: false
|
||||
|
||||
- id: 4.1.4
|
||||
text: "If proxy kubeconfig file exists ensure ownership is set to root:root (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c %U:%G $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
scored: false
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c permissions=%a $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c %U:%G $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c permissions=%a $CAFILE; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command to modify the file permissions of the
|
||||
--client-ca-file chmod 600 <filename>
|
||||
scored: false
|
||||
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c %U:%G $CAFILE; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
compare:
|
||||
op: eq
|
||||
value: root:root
|
||||
remediation: |
|
||||
Run the following command to modify the ownership of the --client-ca-file.
|
||||
chown root:root <filename>
|
||||
scored: false
|
||||
|
||||
- id: 4.1.9
|
||||
text: "If the kubelet config.yaml configuration file is being used validate permissions set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c permissions=%a $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chmod 600 $kubeletconf
|
||||
scored: true
|
||||
|
||||
- id: 4.1.10
|
||||
text: "If the kubelet config.yaml configuration file is being used validate file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chown root:root $kubeletconf
|
||||
scored: true
|
||||
|
||||
- id: 4.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: '{.authentication.anonymous.enabled}'
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication: anonymous: enabled` to
|
||||
`false`.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
`--anonymous-auth=false`
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: '{.authorization.mode}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authorization.mode` to Webhook. If
|
||||
using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--authorization-mode=Webhook
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: '{.authentication.x509.clientCAFile}'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication.x509.clientCAFile` to
|
||||
the location of the client CA file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.4
|
||||
text: "Verify that the --read-only-port argument is set to 0 (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
set: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `readOnlyPort` to 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--read-only-port=0
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `streamingConnectionIdleTimeout` to a
|
||||
value other than 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--streaming-connection-idle-timeout=5m
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.6
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `makeIPTablesUtilChains` to `true`.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove the --make-iptables-util-chains argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.7
|
||||
text: "Ensure that the --hostname-override argument is not set (Manual)"
|
||||
# This is one of those properties that can only be set as a command line argument.
|
||||
# To check if the property is set as expected, we need to parse the kubelet command
|
||||
# instead reading the Kubelet Configuration file.
|
||||
audit: "/bin/ps -fC $kubeletbin "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --hostname-override
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and remove the --hostname-override argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.8
|
||||
text: "Ensure that the eventRecordQPS argument is set to a level which ensures appropriate event capture (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
compare:
|
||||
op: gte
|
||||
value: 0
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `eventRecordQPS` to an appropriate level.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.9
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cert-file
|
||||
path: '{.tlsCertFile}'
|
||||
- flag: --tls-private-key-file
|
||||
path: '{.tlsPrivateKeyFile}'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCertFile` to the location
|
||||
of the certificate file to use to identify this Kubelet, and `tlsPrivateKeyFile`
|
||||
to the location of the corresponding private key file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameters in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.10
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to add the line `rotateCertificates` to `true` or
|
||||
remove it altogether to use the default value.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove --rotate-certificates=false argument from the KUBELET_CERTIFICATE_ARGS
|
||||
variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.11
|
||||
text: "Verify that the RotateKubeletServerCertificate argument is set to true (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: false
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and set the below parameter in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.12
|
||||
text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cipher-suites
|
||||
path: '{range .tlsCipherSuites[:]}{}{'',''}{end}'
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCipherSuites` to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the --tls-cipher-suites parameter as follows, or to a subset of these values.
|
||||
--tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.13
|
||||
text: "Ensure that a limit is set on pod PIDs (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --pod-max-pids
|
||||
path: '{.podPidsLimit}'
|
||||
remediation: |
|
||||
Decide on an appropriate level for this parameter and set it,
|
||||
either via the --pod-max-pids command line parameter or the PodPidsLimit configuration file setting.
|
||||
scored: false
|
||||
304
cfg/cis-1.8/policies.yaml
Normal file
304
cfg/cis-1.8/policies.yaml
Normal file
@@ -0,0 +1,304 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.8"
|
||||
id: 5
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role :
|
||||
kubectl delete clusterrolebinding [name]
|
||||
scored: false
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize access to secrets (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to Secret objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Minimize access to create pods (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to pod objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.5
|
||||
text: "Ensure that default service accounts are not actively used. (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
||||
to the Kubernetes API server.
|
||||
Modify the configuration of each default service account to include this value
|
||||
automountServiceAccountToken: false
|
||||
scored: false
|
||||
|
||||
- id: 5.1.6
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Modify the definition of pods and service accounts which do not need to mount service
|
||||
account tokens to disable it.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.7
|
||||
text: "Avoid use of system:masters group (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.8
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.9
|
||||
text: "Minimize access to create persistent volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to PersistentVolume objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.10
|
||||
text: "Minimize access to the proxy sub-resource of nodes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the proxy sub-resource of node objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.11
|
||||
text: "Minimize access to the approval sub-resource of certificatesigningrequests objects (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the approval sub-resource of certificatesigningrequest objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.12
|
||||
text: "Minimize access to webhook configuration objects (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the validatingwebhookconfigurations or mutatingwebhookconfigurations objects
|
||||
scored: false
|
||||
|
||||
- id: 5.1.13
|
||||
text: "Minimize access to the service account token creation (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the token sub-resource of serviceaccount objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Pod Security Standards"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Ensure that the cluster has at least one active policy control mechanism in place (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that either Pod Security Admission or an external policy control system is in place
|
||||
for every namespace which contains user workloads.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.2
|
||||
text: "Minimize the admission of privileged containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of privileged containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostPID` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostIPC` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.5
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostNetwork` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.6
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `.spec.allowPrivilegeEscalation` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.7
|
||||
text: "Minimize the admission of root containers (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a policy for each namespace in the cluster, ensuring that either `MustRunAsNonRoot`
|
||||
or `MustRunAs` with the range of UIDs not including 0, is set.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.8
|
||||
text: "Minimize the admission of containers with the NET_RAW capability (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with the `NET_RAW` capability.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.9
|
||||
text: "Minimize the admission of containers with added capabilities (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that `allowedCapabilities` is not present in policies for the cluster unless
|
||||
it is set to an empty array.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.10
|
||||
text: "Minimize the admission of containers with capabilities assigned (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the use of capabilites in applications running on your cluster. Where a namespace
|
||||
contains applicaions which do not require any Linux capabities to operate consider adding
|
||||
a PSP which forbids the admission of containers which do not drop all capabilities.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.11
|
||||
text: "Minimize the admission of Windows HostProcess containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers that have `.securityContext.windowsOptions.hostProcess` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.12
|
||||
text: "Minimize the admission of HostPath volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `hostPath` volumes.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.13
|
||||
text: "Minimize the admission of containers which use HostPorts (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers which use `hostPort` sections.
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "Network Policies and CNI"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure that the CNI in use supports NetworkPolicies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If the CNI plugin in use does not support network policies, consideration should be given to
|
||||
making use of a different plugin, or finding an alternate mechanism for restricting traffic
|
||||
in the Kubernetes cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.3.2
|
||||
text: "Ensure that all Namespaces have NetworkPolicies defined (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Prefer using Secrets as files over Secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If possible, rewrite application code to read Secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 5.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the Secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 5.5
|
||||
text: "Extensible Admission Control"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup image provenance.
|
||||
scored: false
|
||||
|
||||
- id: 5.7
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 5.7.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.2
|
||||
text: "Ensure that the seccomp profile is set to docker/default in your Pod definitions (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Use `securityContext` to enable the docker/default seccomp profile in your pod definitions.
|
||||
An example is as below:
|
||||
securityContext:
|
||||
seccompProfile:
|
||||
type: RuntimeDefault
|
||||
scored: false
|
||||
|
||||
- id: 5.7.3
|
||||
text: "Apply SecurityContext to your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply SecurityContexts to your Pods. For a
|
||||
suggested list of SecurityContexts, you may refer to the CIS Security Benchmark for Docker
|
||||
Containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.4
|
||||
text: "The default namespace should not be used (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
scored: false
|
||||
2
cfg/cis-1.9/config.yaml
Normal file
2
cfg/cis-1.9/config.yaml
Normal file
@@ -0,0 +1,2 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
62
cfg/cis-1.9/controlplane.yaml
Normal file
62
cfg/cis-1.9/controlplane.yaml
Normal file
@@ -0,0 +1,62 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.9"
|
||||
id: 3
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Client certificate authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be
|
||||
implemented in place of client certificates.
|
||||
scored: false
|
||||
|
||||
- id: 3.1.2
|
||||
text: "Service account token authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be implemented
|
||||
in place of service account tokens.
|
||||
scored: false
|
||||
|
||||
- id: 3.1.3
|
||||
text: "Bootstrap token authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be implemented
|
||||
in place of bootstrap tokens.
|
||||
scored: false
|
||||
|
||||
- id: 3.2
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that a minimal audit policy is created (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-policy-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Create an audit policy file for your cluster.
|
||||
scored: false
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the audit policy covers key security concerns (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the audit policy provided for the cluster and ensure that it covers
|
||||
at least the following areas,
|
||||
- Access to Secrets managed by the cluster. Care should be taken to only
|
||||
log Metadata for requests to Secrets, ConfigMaps, and TokenReviews, in
|
||||
order to avoid risk of logging sensitive data.
|
||||
- Modification of Pod and Deployment objects.
|
||||
- Use of `pods/exec`, `pods/portforward`, `pods/proxy` and `services/proxy`.
|
||||
For most requests, minimally logging at the Metadata level is recommended
|
||||
(the most basic level of logging).
|
||||
scored: false
|
||||
135
cfg/cis-1.9/etcd.yaml
Normal file
135
cfg/cis-1.9/etcd.yaml
Normal file
@@ -0,0 +1,135 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.9"
|
||||
id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
type: "etcd"
|
||||
groups:
|
||||
- id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
checks:
|
||||
- id: 2.1
|
||||
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--cert-file"
|
||||
env: "ETCD_CERT_FILE"
|
||||
- flag: "--key-file"
|
||||
env: "ETCD_KEY_FILE"
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure TLS encryption.
|
||||
Then, edit the etcd pod specification file /etc/kubernetes/manifests/etcd.yaml
|
||||
on the master node and set the below parameters.
|
||||
--cert-file=</path/to/ca-file>
|
||||
--key-file=</path/to/key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.2
|
||||
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--client-cert-auth"
|
||||
env: "ETCD_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--client-cert-auth="true"
|
||||
scored: true
|
||||
|
||||
- id: 2.3
|
||||
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --auto-tls parameter or set it to false.
|
||||
--auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.4
|
||||
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are
|
||||
set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--peer-cert-file"
|
||||
env: "ETCD_PEER_CERT_FILE"
|
||||
- flag: "--peer-key-file"
|
||||
env: "ETCD_PEER_KEY_FILE"
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure peer TLS encryption as appropriate
|
||||
for your etcd cluster.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameters.
|
||||
--peer-client-file=</path/to/peer-cert-file>
|
||||
--peer-key-file=</path/to/peer-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.5
|
||||
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--peer-client-cert-auth"
|
||||
env: "ETCD_PEER_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--peer-client-cert-auth=true
|
||||
scored: true
|
||||
|
||||
- id: 2.6
|
||||
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --peer-auto-tls parameter or set it to false.
|
||||
--peer-auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.7
|
||||
text: "Ensure that a unique Certificate Authority is used for etcd (Manual)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--trusted-ca-file"
|
||||
env: "ETCD_TRUSTED_CA_FILE"
|
||||
remediation: |
|
||||
[Manual test]
|
||||
Follow the etcd documentation and create a dedicated certificate authority setup for the
|
||||
etcd service.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameter.
|
||||
--trusted-ca-file=</path/to/ca-file>
|
||||
scored: false
|
||||
919
cfg/cis-1.9/master.yaml
Normal file
919
cfg/cis-1.9/master.yaml
Normal file
@@ -0,0 +1,919 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.9"
|
||||
id: 1
|
||||
text: "Control Plane Security Configuration"
|
||||
type: "master"
|
||||
groups:
|
||||
- id: 1.1
|
||||
text: "Control Plane Node Configuration Files"
|
||||
checks:
|
||||
- id: 1.1.1
|
||||
text: "Ensure that the API server pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c permissions=%a $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the
|
||||
control plane node.
|
||||
For example, chmod 600 $apiserverconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.2
|
||||
text: "Ensure that the API server pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c %U:%G $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $apiserverconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.3
|
||||
text: "Ensure that the controller manager pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c permissions=%a $controllermanagerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 $controllermanagerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.4
|
||||
text: "Ensure that the controller manager pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c %U:%G $controllermanagerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $controllermanagerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.5
|
||||
text: "Ensure that the scheduler pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c permissions=%a $schedulerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 $schedulerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.6
|
||||
text: "Ensure that the scheduler pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c %U:%G $schedulerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $schedulerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.7
|
||||
text: "Ensure that the etcd pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then find $etcdconf -name '*etcd*' | xargs stat -c permissions=%a; fi'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $etcdconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.8
|
||||
text: "Ensure that the etcd pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then find $etcdconf -name '*etcd*' | xargs stat -c %U:%G; fi'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $etcdconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.9
|
||||
text: "Ensure that the Container Network Interface file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: |
|
||||
ps -ef | grep $kubeletbin | grep -- --cni-conf-dir | sed 's%.*cni-conf-dir[= ]\([^ ]*\).*%\1%' | xargs -I{} find {} -mindepth 1 | xargs --no-run-if-empty stat -c permissions=%a
|
||||
find /var/lib/cni/networks -type f 2> /dev/null | xargs --no-run-if-empty stat -c permissions=%a
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 <path/to/cni/files>
|
||||
scored: false
|
||||
|
||||
- id: 1.1.10
|
||||
text: "Ensure that the Container Network Interface file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
ps -ef | grep $kubeletbin | grep -- --cni-conf-dir | sed 's%.*cni-conf-dir[= ]\([^ ]*\).*%\1%' | xargs -I{} find {} -mindepth 1 | xargs --no-run-if-empty stat -c %U:%G
|
||||
find /var/lib/cni/networks -type f 2> /dev/null | xargs --no-run-if-empty stat -c %U:%G
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root <path/to/cni/files>
|
||||
scored: false
|
||||
|
||||
- id: 1.1.11
|
||||
text: "Ensure that the etcd data directory permissions are set to 700 or more restrictive (Automated)"
|
||||
audit: |
|
||||
DATA_DIR=''
|
||||
for d in $(ps -ef | grep $etcdbin | grep -- --data-dir | sed 's%.*data-dir[= ]\([^ ]*\).*%\1%'); do
|
||||
if test -d "$d"; then DATA_DIR="$d"; fi
|
||||
done
|
||||
if ! test -d "$DATA_DIR"; then DATA_DIR=$etcddatadir; fi
|
||||
stat -c permissions=%a "$DATA_DIR"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "700"
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above). For example,
|
||||
chmod 700 /var/lib/etcd
|
||||
scored: true
|
||||
|
||||
- id: 1.1.12
|
||||
text: "Ensure that the etcd data directory ownership is set to etcd:etcd (Automated)"
|
||||
audit: |
|
||||
DATA_DIR=''
|
||||
for d in $(ps -ef | grep $etcdbin | grep -- --data-dir | sed 's%.*data-dir[= ]\([^ ]*\).*%\1%'); do
|
||||
if test -d "$d"; then DATA_DIR="$d"; fi
|
||||
done
|
||||
if ! test -d "$DATA_DIR"; then DATA_DIR=$etcddatadir; fi
|
||||
stat -c %U:%G "$DATA_DIR"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "etcd:etcd"
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above).
|
||||
For example, chown etcd:etcd /var/lib/etcd
|
||||
scored: true
|
||||
|
||||
- id: 1.1.13
|
||||
text: "Ensure that the default administrative credential file permissions are set to 600 (Automated)"
|
||||
audit: |
|
||||
for adminconf in /etc/kubernetes/admin.conf /etc/kubernetes/super-admin.conf; do if test -e $adminconf; then stat -c "permissions=%a %n" $adminconf; fi; done
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 /etc/kubernetes/admin.conf
|
||||
On Kubernetes 1.29+ the super-admin.conf file should also be modified, if present.
|
||||
For example, chmod 600 /etc/kubernetes/super-admin.conf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.14
|
||||
text: "Ensure that the default administrative credential file ownership is set to root:root (Automated)"
|
||||
audit: |
|
||||
for adminconf in /etc/kubernetes/admin.conf /etc/kubernetes/super-admin.conf; do if test -e $adminconf; then stat -c "ownership=%U:%G %n" $adminconf; fi; done
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "ownership"
|
||||
compare:
|
||||
op: eq
|
||||
value: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root /etc/kubernetes/admin.conf
|
||||
On Kubernetes 1.29+ the super-admin.conf file should also be modified, if present.
|
||||
For example, chown root:root /etc/kubernetes/super-admin.conf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.15
|
||||
text: "Ensure that the scheduler.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerkubeconfig; then stat -c permissions=%a $schedulerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $schedulerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.16
|
||||
text: "Ensure that the scheduler.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerkubeconfig; then stat -c %U:%G $schedulerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $schedulerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.17
|
||||
text: "Ensure that the controller-manager.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerkubeconfig; then stat -c permissions=%a $controllermanagerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $controllermanagerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.18
|
||||
text: "Ensure that the controller-manager.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerkubeconfig; then stat -c %U:%G $controllermanagerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $controllermanagerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.19
|
||||
text: "Ensure that the Kubernetes PKI directory and file ownership is set to root:root (Automated)"
|
||||
audit: "find /etc/kubernetes/pki/ | xargs stat -c %U:%G"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown -R root:root /etc/kubernetes/pki/
|
||||
scored: true
|
||||
|
||||
- id: 1.1.20
|
||||
text: "Ensure that the Kubernetes PKI certificate file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: "find /etc/kubernetes/pki/ -name '*.crt' | xargs stat -c permissions=%a"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod -R 600 /etc/kubernetes/pki/*.crt
|
||||
scored: false
|
||||
|
||||
- id: 1.1.21
|
||||
text: "Ensure that the Kubernetes PKI key file permissions are set to 600 (Manual)"
|
||||
audit: "find /etc/kubernetes/pki/ -name '*.key' | xargs stat -c permissions=%a"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod -R 600 /etc/kubernetes/pki/*.key
|
||||
scored: false
|
||||
|
||||
- id: 1.2
|
||||
text: "API Server"
|
||||
checks:
|
||||
- id: 1.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--anonymous-auth=false
|
||||
scored: false
|
||||
|
||||
- id: 1.2.2
|
||||
text: "Ensure that the --token-auth-file parameter is not set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--token-auth-file"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and configure alternate mechanisms for authentication. Then,
|
||||
edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and remove the --token-auth-file=<filename> parameter.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.3
|
||||
text: "Ensure that the --DenyServiceExternalIPs is set (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "DenyServiceExternalIPs"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and add the `DenyServiceExternalIPs` plugin
|
||||
to the enabled admission plugins, as such --enable-admission-plugin=DenyServiceExternalIPs.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.4
|
||||
text: "Ensure that the --kubelet-client-certificate and --kubelet-client-key arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--kubelet-client-certificate"
|
||||
- flag: "--kubelet-client-key"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the
|
||||
apiserver and kubelets. Then, edit API server pod specification file
|
||||
$apiserverconf on the control plane node and set the
|
||||
kubelet client certificate and key parameters as below.
|
||||
--kubelet-client-certificate=<path/to/client-certificate-file>
|
||||
--kubelet-client-key=<path/to/client-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.5
|
||||
text: "Ensure that the --kubelet-certificate-authority argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--kubelet-certificate-authority"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup the TLS connection between
|
||||
the apiserver and kubelets. Then, edit the API server pod specification file
|
||||
$apiserverconf on the control plane node and set the
|
||||
--kubelet-certificate-authority parameter to the path to the cert file for the certificate authority.
|
||||
--kubelet-certificate-authority=<ca-string>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.6
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "AlwaysAllow"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to values other than AlwaysAllow.
|
||||
One such example could be as below.
|
||||
--authorization-mode=RBAC
|
||||
scored: true
|
||||
|
||||
- id: 1.2.7
|
||||
text: "Ensure that the --authorization-mode argument includes Node (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "Node"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to a value that includes Node.
|
||||
--authorization-mode=Node,RBAC
|
||||
scored: true
|
||||
|
||||
- id: 1.2.8
|
||||
text: "Ensure that the --authorization-mode argument includes RBAC (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "RBAC"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to a value that includes RBAC,
|
||||
for example `--authorization-mode=Node,RBAC`.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.9
|
||||
text: "Ensure that the admission control plugin EventRateLimit is set (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "EventRateLimit"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set the desired limits in a configuration file.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
and set the below parameters.
|
||||
--enable-admission-plugins=...,EventRateLimit,...
|
||||
--admission-control-config-file=<path/to/configuration/file>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.10
|
||||
text: "Ensure that the admission control plugin AlwaysAdmit is not set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAdmit
|
||||
- flag: "--enable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and either remove the --enable-admission-plugins parameter, or set it to a
|
||||
value that does not include AlwaysAdmit.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.11
|
||||
text: "Ensure that the admission control plugin AlwaysPullImages is set (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "AlwaysPullImages"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to include
|
||||
AlwaysPullImages.
|
||||
--enable-admission-plugins=...,AlwaysPullImages,...
|
||||
scored: false
|
||||
|
||||
- id: 1.2.12
|
||||
text: "Ensure that the admission control plugin ServiceAccount is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "ServiceAccount"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and create ServiceAccount objects as per your environment.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and ensure that the --disable-admission-plugins parameter is set to a
|
||||
value that does not include ServiceAccount.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.13
|
||||
text: "Ensure that the admission control plugin NamespaceLifecycle is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "NamespaceLifecycle"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --disable-admission-plugins parameter to
|
||||
ensure it does not include NamespaceLifecycle.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.14
|
||||
text: "Ensure that the admission control plugin NodeRestriction is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "NodeRestriction"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure NodeRestriction plug-in on kubelets.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to a
|
||||
value that includes NodeRestriction.
|
||||
--enable-admission-plugins=...,NodeRestriction,...
|
||||
scored: true
|
||||
|
||||
- id: 1.2.15
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.2.16
|
||||
text: "Ensure that the --audit-log-path argument is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-path"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-path parameter to a suitable path and
|
||||
file where you would like audit logs to be written, for example,
|
||||
--audit-log-path=/var/log/apiserver/audit.log
|
||||
scored: true
|
||||
|
||||
- id: 1.2.17
|
||||
text: "Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxage"
|
||||
compare:
|
||||
op: gte
|
||||
value: 30
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxage parameter to 30
|
||||
or as an appropriate number of days, for example,
|
||||
--audit-log-maxage=30
|
||||
scored: true
|
||||
|
||||
- id: 1.2.18
|
||||
text: "Ensure that the --audit-log-maxbackup argument is set to 10 or as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxbackup"
|
||||
compare:
|
||||
op: gte
|
||||
value: 10
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxbackup parameter to 10 or to an appropriate
|
||||
value. For example,
|
||||
--audit-log-maxbackup=10
|
||||
scored: true
|
||||
|
||||
- id: 1.2.19
|
||||
text: "Ensure that the --audit-log-maxsize argument is set to 100 or as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxsize"
|
||||
compare:
|
||||
op: gte
|
||||
value: 100
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxsize parameter to an appropriate size in MB.
|
||||
For example, to set it as 100 MB, --audit-log-maxsize=100
|
||||
scored: true
|
||||
|
||||
- id: 1.2.20
|
||||
text: "Ensure that the --request-timeout argument is set as appropriate (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
type: manual
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
and set the below parameter as appropriate and if needed.
|
||||
For example, --request-timeout=300s
|
||||
scored: false
|
||||
|
||||
- id: 1.2.21
|
||||
text: "Ensure that the --service-account-lookup argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--service-account-lookup"
|
||||
set: false
|
||||
- flag: "--service-account-lookup"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--service-account-lookup=true
|
||||
Alternatively, you can delete the --service-account-lookup parameter from this file so
|
||||
that the default takes effect.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.22
|
||||
text: "Ensure that the --service-account-key-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-key-file"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --service-account-key-file parameter
|
||||
to the public key file for service accounts. For example,
|
||||
--service-account-key-file=<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.23
|
||||
text: "Ensure that the --etcd-certfile and --etcd-keyfile arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--etcd-certfile"
|
||||
- flag: "--etcd-keyfile"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the etcd certificate and key file parameters.
|
||||
--etcd-certfile=<path/to/client-certificate-file>
|
||||
--etcd-keyfile=<path/to/client-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.24
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--tls-cert-file"
|
||||
- flag: "--tls-private-key-file"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the TLS certificate and private key file parameters.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.25
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--client-ca-file"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the client certificate authority file.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.26
|
||||
text: "Ensure that the --etcd-cafile argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--etcd-cafile"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the etcd certificate authority file parameter.
|
||||
--etcd-cafile=<path/to/ca-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.27
|
||||
text: "Ensure that the --encryption-provider-config argument is set as appropriate (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--encryption-provider-config"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --encryption-provider-config parameter to the path of that file.
|
||||
For example, --encryption-provider-config=</path/to/EncryptionConfig/File>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.28
|
||||
text: "Ensure that encryption providers are appropriately configured (Manual)"
|
||||
audit: |
|
||||
ENCRYPTION_PROVIDER_CONFIG=$(ps -ef | grep $apiserverbin | grep -- --encryption-provider-config | sed 's%.*encryption-provider-config[= ]\([^ ]*\).*%\1%')
|
||||
if test -e $ENCRYPTION_PROVIDER_CONFIG; then grep -A1 'providers:' $ENCRYPTION_PROVIDER_CONFIG | tail -n1 | grep -o "[A-Za-z]*" | sed 's/^/provider=/'; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "provider"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "aescbc,kms,secretbox"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
||||
In this file, choose aescbc, kms or secretbox as the encryption provider.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.29
|
||||
text: "Ensure that the API Server only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--tls-cipher-suites"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384"
|
||||
remediation: |
|
||||
Edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml
|
||||
on the control plane node and set the below parameter.
|
||||
--tls-cipher-suites=TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
|
||||
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
|
||||
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
|
||||
TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
|
||||
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
|
||||
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,
|
||||
TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384
|
||||
scored: false
|
||||
|
||||
- id: 1.3
|
||||
text: "Controller Manager"
|
||||
checks:
|
||||
- id: 1.3.1
|
||||
text: "Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Manual)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--terminated-pod-gc-threshold"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --terminated-pod-gc-threshold to an appropriate threshold,
|
||||
for example, --terminated-pod-gc-threshold=10
|
||||
scored: false
|
||||
|
||||
- id: 1.3.2
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.3.3
|
||||
text: "Ensure that the --use-service-account-credentials argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--use-service-account-credentials"
|
||||
compare:
|
||||
op: noteq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node to set the below parameter.
|
||||
--use-service-account-credentials=true
|
||||
scored: true
|
||||
|
||||
- id: 1.3.4
|
||||
text: "Ensure that the --service-account-private-key-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-private-key-file"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --service-account-private-key-file parameter
|
||||
to the private key file for service accounts.
|
||||
--service-account-private-key-file=<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.3.5
|
||||
text: "Ensure that the --root-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--root-ca-file"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --root-ca-file parameter to the certificate bundle file`.
|
||||
--root-ca-file=<path/to/file>
|
||||
scored: true
|
||||
|
||||
- id: 1.3.6
|
||||
text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--feature-gates"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "RotateKubeletServerCertificate=false"
|
||||
set: true
|
||||
- flag: "--feature-gates"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --feature-gates parameter to include RotateKubeletServerCertificate=true.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
scored: true
|
||||
|
||||
- id: 1.3.7
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and ensure the correct value for the --bind-address parameter
|
||||
scored: true
|
||||
|
||||
- id: 1.4
|
||||
text: "Scheduler"
|
||||
checks:
|
||||
- id: 1.4.1
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $schedulerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Scheduler pod specification file $schedulerconf file
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.4.2
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "/bin/ps -ef | grep $schedulerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Scheduler pod specification file $schedulerconf
|
||||
on the control plane node and ensure the correct value for the --bind-address parameter
|
||||
scored: true
|
||||
478
cfg/cis-1.9/node.yaml
Normal file
478
cfg/cis-1.9/node.yaml
Normal file
@@ -0,0 +1,478 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.9"
|
||||
id: 4
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the kubelet service file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c permissions=%a $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chmod 600 $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c "if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; else echo \"File not found\"; fi"'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "File not found"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
text: "If proxy kubeconfig file exists ensure permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c permissions=%a $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
set: true
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $proxykubeconfig
|
||||
scored: false
|
||||
|
||||
- id: 4.1.4
|
||||
text: "If proxy kubeconfig file exists ensure ownership is set to root:root (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c %U:%G $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
scored: false
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c permissions=%a $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c %U:%G $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c permissions=%a $CAFILE; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command to modify the file permissions of the
|
||||
--client-ca-file chmod 600 <filename>
|
||||
scored: false
|
||||
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
CAFILE=$(ps -ef | grep kubelet | grep -v apiserver | grep -- --client-ca-file= | awk -F '--client-ca-file=' '{print $2}' | awk '{print $1}' | uniq)
|
||||
if test -z $CAFILE; then CAFILE=$kubeletcafile; fi
|
||||
if test -e $CAFILE; then stat -c %U:%G $CAFILE; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
compare:
|
||||
op: eq
|
||||
value: root:root
|
||||
remediation: |
|
||||
Run the following command to modify the ownership of the --client-ca-file.
|
||||
chown root:root <filename>
|
||||
scored: false
|
||||
|
||||
- id: 4.1.9
|
||||
text: "If the kubelet config.yaml configuration file is being used validate permissions set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c permissions=%a $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chmod 600 $kubeletconf
|
||||
scored: true
|
||||
|
||||
- id: 4.1.10
|
||||
text: "If the kubelet config.yaml configuration file is being used validate file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chown root:root $kubeletconf
|
||||
scored: true
|
||||
|
||||
- id: 4.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: '{.authentication.anonymous.enabled}'
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication: anonymous: enabled` to
|
||||
`false`.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
`--anonymous-auth=false`
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: '{.authorization.mode}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authorization.mode` to Webhook. If
|
||||
using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--authorization-mode=Webhook
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: '{.authentication.x509.clientCAFile}'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication.x509.clientCAFile` to
|
||||
the location of the client CA file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.4
|
||||
text: "Verify that the --read-only-port argument is set to 0 (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
set: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `readOnlyPort` to 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--read-only-port=0
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `streamingConnectionIdleTimeout` to a
|
||||
value other than 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--streaming-connection-idle-timeout=5m
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.6
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `makeIPTablesUtilChains` to `true`.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove the --make-iptables-util-chains argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.7
|
||||
text: "Ensure that the --hostname-override argument is not set (Manual)"
|
||||
# This is one of those properties that can only be set as a command line argument.
|
||||
# To check if the property is set as expected, we need to parse the kubelet command
|
||||
# instead reading the Kubelet Configuration file.
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --hostname-override
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and remove the --hostname-override argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.8
|
||||
text: "Ensure that the eventRecordQPS argument is set to a level which ensures appropriate event capture (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
compare:
|
||||
op: gte
|
||||
value: 0
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `eventRecordQPS` to an appropriate level.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.9
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cert-file
|
||||
path: '{.tlsCertFile}'
|
||||
- flag: --tls-private-key-file
|
||||
path: '{.tlsPrivateKeyFile}'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCertFile` to the location
|
||||
of the certificate file to use to identify this Kubelet, and `tlsPrivateKeyFile`
|
||||
to the location of the corresponding private key file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameters in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.10
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to add the line `rotateCertificates` to `true` or
|
||||
remove it altogether to use the default value.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove --rotate-certificates=false argument from the KUBELET_CERTIFICATE_ARGS
|
||||
variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.11
|
||||
text: "Verify that the RotateKubeletServerCertificate argument is set to true (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: false
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and set the below parameter in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.12
|
||||
text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cipher-suites
|
||||
path: '{range .tlsCipherSuites[:]}{}{'',''}{end}'
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCipherSuites` to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the --tls-cipher-suites parameter as follows, or to a subset of these values.
|
||||
--tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.13
|
||||
text: "Ensure that a limit is set on pod PIDs (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --pod-max-pids
|
||||
path: '{.podPidsLimit}'
|
||||
remediation: |
|
||||
Decide on an appropriate level for this parameter and set it,
|
||||
either via the --pod-max-pids command line parameter or the PodPidsLimit configuration file setting.
|
||||
scored: false
|
||||
|
||||
- id: 4.3
|
||||
text: "kube-proxy"
|
||||
checks:
|
||||
- id: 4.3.1
|
||||
text: "Ensure that the kube-proxy metrics service is bound to localhost (Automated)"
|
||||
audit: "/bin/ps -fC $proxybin"
|
||||
audit_config: "/bin/sh -c 'if test -e $proxykubeconfig; then cat $proxykubeconfig; fi'"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--metrics-bind-address"
|
||||
path: '{.metricsBindAddress}'
|
||||
compare:
|
||||
op: has
|
||||
value: "127.0.0.1"
|
||||
- flag: "--metrics-bind-address"
|
||||
path: '{.metricsBindAddress}'
|
||||
set: false
|
||||
remediation: |
|
||||
Modify or remove any values which bind the metrics service to a non-localhost address.
|
||||
The default value is 127.0.0.1:10249.
|
||||
scored: true
|
||||
405
cfg/cis-1.9/policies.yaml
Normal file
405
cfg/cis-1.9/policies.yaml
Normal file
@@ -0,0 +1,405 @@
|
||||
---
|
||||
controls:
|
||||
version: "cis-1.9"
|
||||
id: 5
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Automated)"
|
||||
audit: |
|
||||
kubectl get clusterrolebindings -o=custom-columns=NAME:.metadata.name,ROLE:.roleRef.name,SUBJECT:.subjects[*].name --no-headers | while read -r role_name role_binding subject
|
||||
do
|
||||
if [[ "${role_name}" != "cluster-admin" && "${role_binding}" == "cluster-admin" ]]; then
|
||||
is_compliant="false"
|
||||
else
|
||||
is_compliant="true"
|
||||
fi;
|
||||
echo "**role_name: ${role_name} role_binding: ${role_binding} subject: ${subject} is_compliant: ${is_compliant}"
|
||||
done
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "is_compliant"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role : kubectl delete clusterrolebinding [name]
|
||||
Condition: is_compliant is false if rolename is not cluster-admin and rolebinding is cluster-admin.
|
||||
scored: true
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize access to secrets (Automated)"
|
||||
audit: "echo \"canGetListWatchSecretsAsSystemAuthenticated: $(kubectl auth can-i get,list,watch secrets --all-namespaces --as=system:authenticated)\""
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "canGetListWatchSecretsAsSystemAuthenticated"
|
||||
compare:
|
||||
op: eq
|
||||
value: no
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to Secret objects in the cluster.
|
||||
scored: true
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Automated)"
|
||||
audit: |
|
||||
# Check Roles
|
||||
kubectl get roles --all-namespaces -o custom-columns=ROLE_NAMESPACE:.metadata.namespace,ROLE_NAME:.metadata.name --no-headers | while read -r role_namespace role_name
|
||||
do
|
||||
role_rules=$(kubectl get role -n "${role_namespace}" "${role_name}" -o=json | jq -c '.rules')
|
||||
if echo "${role_rules}" | grep -q "\[\"\*\"\]"; then
|
||||
role_is_compliant="false"
|
||||
else
|
||||
role_is_compliant="true"
|
||||
fi;
|
||||
echo "**role_name: ${role_name} role_namespace: ${role_namespace} role_rules: ${role_rules} role_is_compliant: ${role_is_compliant}"
|
||||
done
|
||||
|
||||
# Check ClusterRoles
|
||||
kubectl get clusterroles -o custom-columns=CLUSTERROLE_NAME:.metadata.name --no-headers | while read -r clusterrole_name
|
||||
do
|
||||
clusterrole_rules=$(kubectl get clusterrole "${clusterrole_name}" -o=json | jq -c '.rules')
|
||||
if echo "${clusterrole_rules}" | grep -q "\[\"\*\"\]"; then
|
||||
clusterrole_is_compliant="false"
|
||||
else
|
||||
clusterrole_is_compliant="true"
|
||||
fi;
|
||||
echo "**clusterrole_name: ${clusterrole_name} clusterrole_rules: ${clusterrole_rules} clusterrole_is_compliant: ${clusterrole_is_compliant}"
|
||||
done
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "role_is_compliant"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
- flag: "clusterrole_is_compliant"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards ["*"] in roles and clusterroles with specific
|
||||
objects or actions.
|
||||
Condition: role_is_compliant is false if ["*"] is found in rules.
|
||||
Condition: clusterrole_is_compliant is false if ["*"] is found in rules.
|
||||
scored: true
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Minimize access to create pods (Automated)"
|
||||
audit: |
|
||||
echo "canCreatePodsAsSystemAuthenticated: $(kubectl auth can-i create pods --all-namespaces --as=system:authenticated)"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "canCreatePodsAsSystemAuthenticated"
|
||||
compare:
|
||||
op: eq
|
||||
value: no
|
||||
remediation: |
|
||||
Where possible, remove create access to pod objects in the cluster.
|
||||
scored: true
|
||||
- id: 5.1.5
|
||||
text: "Ensure that default service accounts are not actively used (Automated)"
|
||||
audit: |
|
||||
kubectl get serviceaccount --all-namespaces --field-selector metadata.name=default -o=json | jq -r '.items[] | " namespace: \(.metadata.namespace), kind: \(.kind), name: \(.metadata.name), automountServiceAccountToken: \(.automountServiceAccountToken | if . == null then "notset" else . end )"' | xargs -L 1
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "automountServiceAccountToken"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
set: true
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
||||
to the Kubernetes API server.
|
||||
Modify the configuration of each default service account to include this value
|
||||
`automountServiceAccountToken: false`.
|
||||
scored: true
|
||||
|
||||
- id: 5.1.6
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Automated)"
|
||||
audit: |
|
||||
kubectl get pods --all-namespaces -o custom-columns=POD_NAMESPACE:.metadata.namespace,POD_NAME:.metadata.name,POD_SERVICE_ACCOUNT:.spec.serviceAccount,POD_IS_AUTOMOUNTSERVICEACCOUNTTOKEN:.spec.automountServiceAccountToken --no-headers | while read -r pod_namespace pod_name pod_service_account pod_is_automountserviceaccounttoken
|
||||
do
|
||||
# Retrieve automountServiceAccountToken's value for ServiceAccount and Pod, set to notset if null or <none>.
|
||||
svacc_is_automountserviceaccounttoken=$(kubectl get serviceaccount -n "${pod_namespace}" "${pod_service_account}" -o json | jq -r '.automountServiceAccountToken' | sed -e 's/<none>/notset/g' -e 's/null/notset/g')
|
||||
pod_is_automountserviceaccounttoken=$(echo "${pod_is_automountserviceaccounttoken}" | sed -e 's/<none>/notset/g' -e 's/null/notset/g')
|
||||
if [ "${svacc_is_automountserviceaccounttoken}" = "false" ] && ( [ "${pod_is_automountserviceaccounttoken}" = "false" ] || [ "${pod_is_automountserviceaccounttoken}" = "notset" ] ); then
|
||||
is_compliant="true"
|
||||
elif [ "${svacc_is_automountserviceaccounttoken}" = "true" ] && [ "${pod_is_automountserviceaccounttoken}" = "false" ]; then
|
||||
is_compliant="true"
|
||||
else
|
||||
is_compliant="false"
|
||||
fi
|
||||
echo "**namespace: ${pod_namespace} pod_name: ${pod_name} service_account: ${pod_service_account} pod_is_automountserviceaccounttoken: ${pod_is_automountserviceaccounttoken} svacc_is_automountServiceAccountToken: ${svacc_is_automountserviceaccounttoken} is_compliant: ${is_compliant}"
|
||||
done
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "is_compliant"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Modify the definition of ServiceAccounts and Pods which do not need to mount service
|
||||
account tokens to disable it, with `automountServiceAccountToken: false`.
|
||||
If both the ServiceAccount and the Pod's .spec specify a value for automountServiceAccountToken, the Pod spec takes precedence.
|
||||
Condition: Pod is_compliant to true when
|
||||
- ServiceAccount is automountServiceAccountToken: false and Pod is automountServiceAccountToken: false or notset
|
||||
- ServiceAccount is automountServiceAccountToken: true notset and Pod is automountServiceAccountToken: false
|
||||
scored: true
|
||||
|
||||
- id: 5.1.7
|
||||
text: "Avoid use of system:masters group (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.8
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.9
|
||||
text: "Minimize access to create persistent volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to PersistentVolume objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.10
|
||||
text: "Minimize access to the proxy sub-resource of nodes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the proxy sub-resource of node objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.11
|
||||
text: "Minimize access to the approval sub-resource of certificatesigningrequests objects (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the approval sub-resource of certificatesigningrequest objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.12
|
||||
text: "Minimize access to webhook configuration objects (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the validatingwebhookconfigurations or mutatingwebhookconfigurations objects
|
||||
scored: false
|
||||
|
||||
- id: 5.1.13
|
||||
text: "Minimize access to the service account token creation (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the token sub-resource of serviceaccount objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Pod Security Standards"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Ensure that the cluster has at least one active policy control mechanism in place (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that either Pod Security Admission or an external policy control system is in place
|
||||
for every namespace which contains user workloads.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.2
|
||||
text: "Minimize the admission of privileged containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of privileged containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostPID` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostIPC` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.5
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostNetwork` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.6
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `.spec.allowPrivilegeEscalation` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.7
|
||||
text: "Minimize the admission of root containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a policy for each namespace in the cluster, ensuring that either `MustRunAsNonRoot`
|
||||
or `MustRunAs` with the range of UIDs not including 0, is set.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.8
|
||||
text: "Minimize the admission of containers with the NET_RAW capability (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with the `NET_RAW` capability.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.9
|
||||
text: "Minimize the admission of containers with added capabilities (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that `allowedCapabilities` is not present in policies for the cluster unless
|
||||
it is set to an empty array.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.10
|
||||
text: "Minimize the admission of containers with capabilities assigned (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the use of capabilites in applications running on your cluster. Where a namespace
|
||||
contains applicaions which do not require any Linux capabities to operate consider adding
|
||||
a PSP which forbids the admission of containers which do not drop all capabilities.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.11
|
||||
text: "Minimize the admission of Windows HostProcess containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers that have `.securityContext.windowsOptions.hostProcess` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.12
|
||||
text: "Minimize the admission of HostPath volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `hostPath` volumes.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.13
|
||||
text: "Minimize the admission of containers which use HostPorts (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers which use `hostPort` sections.
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "Network Policies and CNI"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure that the CNI in use supports NetworkPolicies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If the CNI plugin in use does not support network policies, consideration should be given to
|
||||
making use of a different plugin, or finding an alternate mechanism for restricting traffic
|
||||
in the Kubernetes cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.3.2
|
||||
text: "Ensure that all Namespaces have NetworkPolicies defined (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Prefer using Secrets as files over Secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If possible, rewrite application code to read Secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 5.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the Secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 5.5
|
||||
text: "Extensible Admission Control"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup image provenance.
|
||||
scored: false
|
||||
|
||||
- id: 5.7
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 5.7.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.2
|
||||
text: "Ensure that the seccomp profile is set to docker/default in your Pod definitions (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Use `securityContext` to enable the docker/default seccomp profile in your pod definitions.
|
||||
An example is as below:
|
||||
securityContext:
|
||||
seccompProfile:
|
||||
type: RuntimeDefault
|
||||
scored: false
|
||||
|
||||
- id: 5.7.3
|
||||
text: "Apply SecurityContext to your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply SecurityContexts to your Pods. For a
|
||||
suggested list of SecurityContexts, you may refer to the CIS Security Benchmark for Docker
|
||||
Containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.4
|
||||
text: "The default namespace should not be used (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
scored: false
|
||||
140
cfg/config.yaml
140
cfg/config.yaml
@@ -36,6 +36,7 @@ master:
|
||||
- /var/snap/microk8s/current/args/kube-apiserver
|
||||
- /etc/origin/master/master-config.yaml
|
||||
- /etc/kubernetes/manifests/talos-kube-apiserver.yaml
|
||||
- /var/lib/rancher/rke2/agent/pod-manifests/kube-apiserver.yaml
|
||||
defaultconf: /etc/kubernetes/manifests/kube-apiserver.yaml
|
||||
|
||||
scheduler:
|
||||
@@ -53,6 +54,7 @@ master:
|
||||
- /var/snap/microk8s/current/args/kube-scheduler
|
||||
- /etc/origin/master/scheduler.json
|
||||
- /etc/kubernetes/manifests/talos-kube-scheduler.yaml
|
||||
- /var/lib/rancher/rke2/agent/pod-manifests/kube-scheduler.yaml
|
||||
defaultconf: /etc/kubernetes/manifests/kube-scheduler.yaml
|
||||
kubeconfig:
|
||||
- /etc/kubernetes/scheduler.conf
|
||||
@@ -77,6 +79,7 @@ master:
|
||||
- /var/snap/kube-controller-manager/current/args
|
||||
- /var/snap/microk8s/current/args/kube-controller-manager
|
||||
- /etc/kubernetes/manifests/talos-kube-controller-manager.yaml
|
||||
- /var/lib/rancher/rke2/agent/pod-manifests/kube-controller-manager.yaml
|
||||
defaultconf: /etc/kubernetes/manifests/kube-controller-manager.yaml
|
||||
kubeconfig:
|
||||
- /etc/kubernetes/controller-manager.conf
|
||||
@@ -92,6 +95,7 @@ master:
|
||||
datadirs:
|
||||
- /var/lib/etcd/default.etcd
|
||||
- /var/lib/etcd/data.etcd
|
||||
- /var/lib/rancher/k3s/server/db/etcd
|
||||
confs:
|
||||
- /etc/kubernetes/manifests/etcd.yaml
|
||||
- /etc/kubernetes/manifests/etcd.yml
|
||||
@@ -101,6 +105,8 @@ master:
|
||||
- /var/snap/etcd/common/etcd.conf.yaml
|
||||
- /var/snap/microk8s/current/args/etcd
|
||||
- /usr/lib/systemd/system/etcd.service
|
||||
- /var/lib/rancher/rke2/server/db/etcd/config
|
||||
- /var/lib/rancher/k3s/server/db/etcd/config
|
||||
defaultconf: /etc/kubernetes/manifests/etcd.yaml
|
||||
defaultdatadir: /var/lib/etcd/default.etcd
|
||||
|
||||
@@ -132,6 +138,9 @@ node:
|
||||
- "/etc/kubernetes/certs/ca.crt"
|
||||
- "/etc/kubernetes/cert/ca.pem"
|
||||
- "/var/snap/microk8s/current/certs/ca.crt"
|
||||
- "/var/lib/rancher/rke2/agent/server.crt"
|
||||
- "/var/lib/rancher/rke2/agent/client-ca.crt"
|
||||
- "/var/lib/rancher/k3s/agent/client-ca.crt"
|
||||
svc:
|
||||
# These paths must also be included
|
||||
# in the 'confs' property below
|
||||
@@ -151,13 +160,17 @@ node:
|
||||
- "/var/lib/kubelet/kubeconfig"
|
||||
- "/etc/kubernetes/kubelet-kubeconfig"
|
||||
- "/etc/kubernetes/kubelet/kubeconfig"
|
||||
- "/etc/kubernetes/ssl/kubecfg-kube-node.yaml"
|
||||
- "/var/snap/microk8s/current/credentials/kubelet.config"
|
||||
- "/etc/kubernetes/kubeconfig-kubelet"
|
||||
- "/var/lib/rancher/rke2/agent/kubelet.kubeconfig"
|
||||
- "/var/lib/rancher/k3s/agent/kubelet.kubeconfig"
|
||||
confs:
|
||||
- "/etc/kubernetes/kubelet-config.yaml"
|
||||
- "/var/lib/kubelet/config.yaml"
|
||||
- "/var/lib/kubelet/config.yml"
|
||||
- "/etc/kubernetes/kubelet/kubelet-config.json"
|
||||
- "/etc/kubernetes/kubelet/config.json"
|
||||
- "/etc/kubernetes/kubelet/config"
|
||||
- "/home/kubernetes/kubelet-config.yaml"
|
||||
- "/home/kubernetes/kubelet-config.yml"
|
||||
@@ -177,6 +190,7 @@ node:
|
||||
- "/etc/systemd/system/snap.kubelet.daemon.service"
|
||||
- "/etc/systemd/system/snap.microk8s.daemon-kubelet.service"
|
||||
- "/etc/kubernetes/kubelet.yaml"
|
||||
|
||||
defaultconf: "/var/lib/kubelet/config.yaml"
|
||||
defaultsvc: "/etc/systemd/system/kubelet.service.d/10-kubeadm.conf"
|
||||
defaultkubeconfig: "/etc/kubernetes/kubelet.conf"
|
||||
@@ -200,8 +214,11 @@ node:
|
||||
- "/etc/kubernetes/kubelet-kubeconfig"
|
||||
- "/etc/kubernetes/kubelet-kubeconfig.conf"
|
||||
- "/etc/kubernetes/kubelet/config"
|
||||
- "/etc/kubernetes/ssl/kubecfg-kube-proxy.yaml"
|
||||
- "/var/lib/kubelet/kubeconfig"
|
||||
- "/var/snap/microk8s/current/credentials/proxy.config"
|
||||
- "/var/lib/rancher/rke2/agent/kubeproxy.kubeconfig"
|
||||
- "/var/lib/rancher/k3s/agent/kubeproxy.kubeconfig"
|
||||
svc:
|
||||
- "/lib/systemd/system/kube-proxy.service"
|
||||
- "/etc/systemd/system/snap.microk8s.daemon-proxy.service"
|
||||
@@ -218,6 +235,7 @@ etcd:
|
||||
datadirs:
|
||||
- /var/lib/etcd/default.etcd
|
||||
- /var/lib/etcd/data.etcd
|
||||
- /var/lib/rancher/k3s/server/db/etcd
|
||||
confs:
|
||||
- /etc/kubernetes/manifests/etcd.yaml
|
||||
- /etc/kubernetes/manifests/etcd.yml
|
||||
@@ -227,6 +245,8 @@ etcd:
|
||||
- /var/snap/etcd/common/etcd.conf.yaml
|
||||
- /var/snap/microk8s/current/args/etcd
|
||||
- /usr/lib/systemd/system/etcd.service
|
||||
- /var/lib/rancher/rke2/agent/pod-manifests/etcd.yaml
|
||||
- /var/lib/rancher/k3s/server/db/etcd/config
|
||||
defaultconf: /etc/kubernetes/manifests/etcd.yaml
|
||||
defaultdatadir: /var/lib/etcd/default.etcd
|
||||
|
||||
@@ -258,16 +278,34 @@ version_mapping:
|
||||
"1.22": "cis-1.23"
|
||||
"1.23": "cis-1.23"
|
||||
"1.24": "cis-1.24"
|
||||
"1.25": "cis-1.7"
|
||||
"1.26": "cis-1.8"
|
||||
"1.27": "cis-1.9"
|
||||
"1.28": "cis-1.9"
|
||||
"1.29": "cis-1.9"
|
||||
"eks-1.0.1": "eks-1.0.1"
|
||||
"eks-1.1.0": "eks-1.1.0"
|
||||
"eks-1.2.0": "eks-1.2.0"
|
||||
"gke-1.0": "gke-1.0"
|
||||
"gke-1.2.0": "gke-1.2.0"
|
||||
"gke-1.6.0": "gke-1.6.0"
|
||||
"ocp-3.10": "rh-0.7"
|
||||
"ocp-3.11": "rh-0.7"
|
||||
"ocp-4.0": "rh-1.0"
|
||||
"aks-1.0": "aks-1.0"
|
||||
"ack-1.0": "ack-1.0"
|
||||
"cis-1.6-k3s": "cis-1.6-k3s"
|
||||
"cis-1.24-microk8s": "cis-1.24-microk8s"
|
||||
"tkgi-1.2.53": "tkgi-1.2.53"
|
||||
"k3s-cis-1.7": "k3s-cis-1.7"
|
||||
"k3s-cis-1.23": "k3s-cis-1.23"
|
||||
"k3s-cis-1.24": "k3s-cis-1.24"
|
||||
"rke-cis-1.7": "rke-cis-1.7"
|
||||
"rke-cis-1.23": "rke-cis-1.23"
|
||||
"rke-cis-1.24": "rke-cis-1.24"
|
||||
"rke2-cis-1.7": "rke2-cis-1.7"
|
||||
"rke2-cis-1.23": "rke2-cis-1.23"
|
||||
"rke2-cis-1.24": "rke2-cis-1.24"
|
||||
|
||||
target_mapping:
|
||||
"cis-1.5":
|
||||
@@ -306,6 +344,30 @@ target_mapping:
|
||||
- "controlplane"
|
||||
- "etcd"
|
||||
- "policies"
|
||||
"cis-1.24-microk8s":
|
||||
- "master"
|
||||
- "etcd"
|
||||
- "node"
|
||||
- "controlplane"
|
||||
- "policies"
|
||||
"cis-1.7":
|
||||
- "master"
|
||||
- "node"
|
||||
- "controlplane"
|
||||
- "etcd"
|
||||
- "policies"
|
||||
"cis-1.8":
|
||||
- "master"
|
||||
- "node"
|
||||
- "controlplane"
|
||||
- "etcd"
|
||||
- "policies"
|
||||
"cis-1.9":
|
||||
- "master"
|
||||
- "node"
|
||||
- "controlplane"
|
||||
- "etcd"
|
||||
- "policies"
|
||||
"gke-1.0":
|
||||
- "master"
|
||||
- "node"
|
||||
@@ -319,6 +381,12 @@ target_mapping:
|
||||
- "controlplane"
|
||||
- "policies"
|
||||
- "managedservices"
|
||||
"gke-1.6.0":
|
||||
- "master"
|
||||
- "node"
|
||||
- "controlplane"
|
||||
- "policies"
|
||||
- "managedservices"
|
||||
"eks-1.0.1":
|
||||
- "master"
|
||||
- "node"
|
||||
@@ -331,6 +399,12 @@ target_mapping:
|
||||
- "controlplane"
|
||||
- "policies"
|
||||
- "managedservices"
|
||||
"eks-1.2.0":
|
||||
- "master"
|
||||
- "node"
|
||||
- "controlplane"
|
||||
- "policies"
|
||||
- "managedservices"
|
||||
"rh-0.7":
|
||||
- "master"
|
||||
- "node"
|
||||
@@ -358,3 +432,69 @@ target_mapping:
|
||||
- "controlplane"
|
||||
- "policies"
|
||||
- "managedservices"
|
||||
"tkgi-1.2.53":
|
||||
- "master"
|
||||
- "etcd"
|
||||
- "controlplane"
|
||||
- "node"
|
||||
- "policies"
|
||||
"k3s-cis-1.7":
|
||||
- "master"
|
||||
- "etcd"
|
||||
- "controlplane"
|
||||
- "node"
|
||||
- "policies"
|
||||
"k3s-cis-1.8":
|
||||
- "master"
|
||||
- "etcd"
|
||||
- "controlplane"
|
||||
- "node"
|
||||
- "policies"
|
||||
"k3s-cis-1.23":
|
||||
- "master"
|
||||
- "etcd"
|
||||
- "controlplane"
|
||||
- "node"
|
||||
- "policies"
|
||||
"k3s-cis-1.24":
|
||||
- "master"
|
||||
- "etcd"
|
||||
- "controlplane"
|
||||
- "node"
|
||||
- "policies"
|
||||
"rke-cis-1.7":
|
||||
- "master"
|
||||
- "etcd"
|
||||
- "controlplane"
|
||||
- "node"
|
||||
- "policies"
|
||||
"rke-cis-1.23":
|
||||
- "master"
|
||||
- "etcd"
|
||||
- "controlplane"
|
||||
- "node"
|
||||
- "policies"
|
||||
"rke-cis-1.24":
|
||||
- "master"
|
||||
- "etcd"
|
||||
- "controlplane"
|
||||
- "node"
|
||||
- "policies"
|
||||
"rke2-cis-1.7":
|
||||
- "master"
|
||||
- "etcd"
|
||||
- "controlplane"
|
||||
- "node"
|
||||
- "policies"
|
||||
"rke2-cis-1.23":
|
||||
- "master"
|
||||
- "etcd"
|
||||
- "controlplane"
|
||||
- "node"
|
||||
- "policies"
|
||||
"rke2-cis-1.24":
|
||||
- "master"
|
||||
- "etcd"
|
||||
- "controlplane"
|
||||
- "node"
|
||||
- "policies"
|
||||
|
||||
9
cfg/eks-1.2.0/config.yaml
Normal file
9
cfg/eks-1.2.0/config.yaml
Normal file
@@ -0,0 +1,9 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
## These settings are required if you are using the --asff option to report findings to AWS Security Hub
|
||||
## AWS account number is required.
|
||||
AWS_ACCOUNT: "<AWS_ACCT_NUMBER>"
|
||||
## AWS region is required.
|
||||
AWS_REGION: "<AWS_REGION>"
|
||||
## EKS Cluster ARN is required.
|
||||
CLUSTER_ARN: "<AWS_CLUSTER_ARN>"
|
||||
14
cfg/eks-1.2.0/controlplane.yaml
Normal file
14
cfg/eks-1.2.0/controlplane.yaml
Normal file
@@ -0,0 +1,14 @@
|
||||
---
|
||||
controls:
|
||||
version: "eks-1.2.0"
|
||||
id: 2
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 2.1
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 2.1.1
|
||||
text: "Enable audit logs (Manual)"
|
||||
remediation: "Enable control plane logging for API Server, Audit, Authenticator, Controller Manager, and Scheduler."
|
||||
scored: false
|
||||
154
cfg/eks-1.2.0/managedservices.yaml
Normal file
154
cfg/eks-1.2.0/managedservices.yaml
Normal file
@@ -0,0 +1,154 @@
|
||||
---
|
||||
controls:
|
||||
version: "eks-1.2.0"
|
||||
id: 5
|
||||
text: "Managed Services"
|
||||
type: "managedservices"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "Image Registry and Image Scanning"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure Image Vulnerability Scanning using Amazon ECR image scanning or a third-party provider (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
To utilize AWS ECR for Image scanning please follow the steps below:
|
||||
|
||||
To create a repository configured for scan on push (AWS CLI):
|
||||
aws ecr create-repository --repository-name $REPO_NAME --image-scanning-configuration scanOnPush=true --region $REGION_CODE
|
||||
|
||||
To edit the settings of an existing repository (AWS CLI):
|
||||
aws ecr put-image-scanning-configuration --repository-name $REPO_NAME --image-scanning-configuration scanOnPush=true --region $REGION_CODE
|
||||
|
||||
Use the following steps to start a manual image scan using the AWS Management Console.
|
||||
Open the Amazon ECR console at https://console.aws.amazon.com/ecr/repositories.
|
||||
From the navigation bar, choose the Region to create your repository in.
|
||||
In the navigation pane, choose Repositories.
|
||||
On the Repositories page, choose the repository that contains the image to scan.
|
||||
On the Images page, select the image to scan and then choose Scan.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize user access to Amazon ECR (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Before you use IAM to manage access to Amazon ECR, you should understand what IAM features
|
||||
are available to use with Amazon ECR. To get a high-level view of how Amazon ECR and other
|
||||
AWS services work with IAM, see AWS Services That Work with IAM in the IAM User Guide.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize cluster access to read-only for Amazon ECR (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
You can use your Amazon ECR images with Amazon EKS, but you need to satisfy the following prerequisites.
|
||||
|
||||
The Amazon EKS worker node IAM role (NodeInstanceRole) that you use with your worker nodes must possess
|
||||
the following IAM policy permissions for Amazon ECR.
|
||||
|
||||
{
|
||||
"Version": "2012-10-17",
|
||||
"Statement": [
|
||||
{
|
||||
"Effect": "Allow",
|
||||
"Action": [
|
||||
"ecr:BatchCheckLayerAvailability",
|
||||
"ecr:BatchGetImage",
|
||||
"ecr:GetDownloadUrlForLayer",
|
||||
"ecr:GetAuthorizationToken"
|
||||
],
|
||||
"Resource": "*"
|
||||
}
|
||||
]
|
||||
}
|
||||
scored: false
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Minimize Container Registries to only those approved (Manual)"
|
||||
type: "manual"
|
||||
remediation: "No remediation"
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Identity and Access Management (IAM)"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Prefer using dedicated Amazon EKS Service Accounts (Manual)"
|
||||
type: "manual"
|
||||
remediation: "No remediation"
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "AWS Key Management Service (KMS)"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure Kubernetes Secrets are encrypted using Customer Master Keys (CMKs) managed in AWS KMS (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
This process can only be performed during Cluster Creation.
|
||||
|
||||
Enable 'Secrets Encryption' during Amazon EKS cluster creation as described
|
||||
in the links within the 'References' section.
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Cluster Networking"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Restrict Access to the Control Plane Endpoint (Manual)"
|
||||
type: "manual"
|
||||
remediation: "No remediation"
|
||||
scored: false
|
||||
|
||||
- id: 5.4.2
|
||||
text: "Ensure clusters are created with Private Endpoint Enabled and Public Access Disabled (Manual)"
|
||||
type: "manual"
|
||||
remediation: "No remediation"
|
||||
scored: false
|
||||
|
||||
- id: 5.4.3
|
||||
text: "Ensure clusters are created with Private Nodes (Manual)"
|
||||
type: "manual"
|
||||
remediation: "No remediation"
|
||||
scored: false
|
||||
|
||||
- id: 5.4.4
|
||||
text: "Ensure Network Policy is Enabled and set as appropriate (Manual)"
|
||||
type: "manual"
|
||||
remediation: "No remediation"
|
||||
scored: false
|
||||
|
||||
- id: 5.4.5
|
||||
text: "Encrypt traffic to HTTPS load balancers with TLS certificates (Manual)"
|
||||
type: "manual"
|
||||
remediation: "No remediation"
|
||||
scored: false
|
||||
|
||||
|
||||
- id: 5.5
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Manage Kubernetes RBAC users with AWS IAM Authenticator for Kubernetes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the 'Managing users or IAM roles for your cluster' in Amazon EKS documentation.
|
||||
scored: false
|
||||
|
||||
|
||||
- id: 5.6
|
||||
text: "Other Cluster Configurations"
|
||||
checks:
|
||||
- id: 5.6.1
|
||||
text: "Consider Fargate for running untrusted workloads (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a Fargate profile for your cluster Before you can schedule pods running on Fargate
|
||||
in your cluster, you must define a Fargate profile that specifies which pods should use
|
||||
Fargate when they are launched. For more information, see AWS Fargate profile.
|
||||
|
||||
Note: If you created your cluster with eksctl using the --fargate option, then a Fargate profile has
|
||||
already been created for your cluster with selectors for all pods in the kube-system
|
||||
and default namespaces. Use the following procedure to create Fargate profiles for
|
||||
any other namespaces you would like to use with Fargate.
|
||||
scored: false
|
||||
6
cfg/eks-1.2.0/master.yaml
Normal file
6
cfg/eks-1.2.0/master.yaml
Normal file
@@ -0,0 +1,6 @@
|
||||
---
|
||||
controls:
|
||||
version: "eks-1.2.0"
|
||||
id: 1
|
||||
text: "Control Plane Components"
|
||||
type: "master"
|
||||
330
cfg/eks-1.2.0/node.yaml
Normal file
330
cfg/eks-1.2.0/node.yaml
Normal file
@@ -0,0 +1,330 @@
|
||||
---
|
||||
controls:
|
||||
version: "eks-1.2.0"
|
||||
id: 3
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Ensure that the kubeconfig file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c permissions=%a $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 644 $kubeletkubeconfig
|
||||
scored: false
|
||||
|
||||
- id: 3.1.2
|
||||
text: "Ensure that the kubelet kubeconfig file ownership is set to root:root (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c %U:%G $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletkubeconfig
|
||||
scored: false
|
||||
|
||||
- id: 3.1.3
|
||||
text: "Ensure that the kubelet configuration file has permissions set to 644 or more restrictive (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c permissions=%a $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chmod 644 $kubeletconf
|
||||
scored: false
|
||||
|
||||
- id: 3.1.4
|
||||
text: "Ensure that the kubelet configuration file ownership is set to root:root (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chown root:root $kubeletconf
|
||||
scored: false
|
||||
|
||||
- id: 3.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that the Anonymous Auth is Not Enabled (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: '{.authentication.anonymous.enabled}'
|
||||
set: true
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set authentication: anonymous: enabled to
|
||||
false.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--anonymous-auth=false
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: '{.authorization.mode}'
|
||||
set: true
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set authorization: mode to Webhook. If
|
||||
using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--authorization-mode=Webhook
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 3.2.3
|
||||
text: "Ensure that a Client CA File is Configured (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: '{.authentication.x509.clientCAFile}'
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set authentication: x509: clientCAFile to
|
||||
the location of the client CA file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 3.2.4
|
||||
text: "Ensure that the --read-only-port is disabled (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
set: true
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set readOnlyPort to 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--read-only-port=0
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 3.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: true
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set streamingConnectionIdleTimeout to a
|
||||
value other than 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--streaming-connection-idle-timeout=5m
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 3.2.6
|
||||
text: "Ensure that the --protect-kernel-defaults argument is set to true (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --protect-kernel-defaults
|
||||
path: '{.protectKernelDefaults}'
|
||||
set: true
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set protectKernelDefaults: true.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--protect-kernel-defaults=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 3.2.7
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated) "
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: true
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set makeIPTablesUtilChains: true.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove the --make-iptables-util-chains argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 3.2.8
|
||||
text: "Ensure that the --hostname-override argument is not set (Manual)"
|
||||
# This is one of those properties that can only be set as a command line argument.
|
||||
# To check if the property is set as expected, we need to parse the kubelet command
|
||||
# instead reading the Kubelet Configuration file.
|
||||
audit: "/bin/ps -fC $kubeletbin "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --hostname-override
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and remove the --hostname-override argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 3.2.9
|
||||
text: "Ensure that the --eventRecordQPS argument is set to 0 or a level which ensures appropriate event capture (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
set: true
|
||||
compare:
|
||||
op: gte
|
||||
value: 0
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set eventRecordQPS: to an appropriate level.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 3.2.10
|
||||
text: "Ensure that the --rotate-certificates argument is not present or is set to true (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: true
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to add the line rotateCertificates: true or
|
||||
remove it altogether to use the default value.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove --rotate-certificates=false argument from the KUBELET_CERTIFICATE_ARGS
|
||||
variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 3.2.11
|
||||
text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
set: true
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and set the below parameter in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
- id: 3.3
|
||||
text: "Container Optimized OS"
|
||||
checks:
|
||||
- id: 3.3.1
|
||||
text: "Prefer using a container-optimized OS when possible (Manual)"
|
||||
remediation: "No remediation"
|
||||
scored: false
|
||||
213
cfg/eks-1.2.0/policies.yaml
Normal file
213
cfg/eks-1.2.0/policies.yaml
Normal file
@@ -0,0 +1,213 @@
|
||||
---
|
||||
controls:
|
||||
version: "eks-1.2.0"
|
||||
id: 4
|
||||
text: "Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role :
|
||||
kubectl delete clusterrolebinding [name]
|
||||
scored: false
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Minimize access to secrets (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to secret objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 4.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
scored: false
|
||||
|
||||
- id: 4.1.4
|
||||
text: "Minimize access to create pods (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to pod objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that default service accounts are not actively used. (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
||||
to the Kubernetes API server.
|
||||
Modify the configuration of each default service account to include this value
|
||||
automountServiceAccountToken: false
|
||||
scored: false
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Modify the definition of pods and service accounts which do not need to mount service
|
||||
account tokens to disable it.
|
||||
scored: false
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Avoid use of system:masters group (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 4.1.8
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 4.2
|
||||
text: "Pod Security Policies"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Minimize the admission of privileged containers (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a PSP as described in the Kubernetes documentation, ensuring that
|
||||
the .spec.privileged field is omitted or set to false.
|
||||
scored: false
|
||||
|
||||
- id: 4.2.2
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a PSP as described in the Kubernetes documentation, ensuring that the
|
||||
.spec.hostPID field is omitted or set to false.
|
||||
scored: false
|
||||
|
||||
- id: 4.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a PSP as described in the Kubernetes documentation, ensuring that the
|
||||
.spec.hostIPC field is omitted or set to false.
|
||||
scored: false
|
||||
|
||||
- id: 4.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a PSP as described in the Kubernetes documentation, ensuring that the
|
||||
.spec.hostNetwork field is omitted or set to false.
|
||||
scored: false
|
||||
|
||||
- id: 4.2.5
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a PSP as described in the Kubernetes documentation, ensuring that the
|
||||
.spec.allowPrivilegeEscalation field is omitted or set to false.
|
||||
scored: false
|
||||
|
||||
- id: 4.2.6
|
||||
text: "Minimize the admission of root containers (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a PSP as described in the Kubernetes documentation, ensuring that the
|
||||
.spec.runAsUser.rule is set to either MustRunAsNonRoot or MustRunAs with the range of
|
||||
UIDs not including 0.
|
||||
scored: false
|
||||
|
||||
- id: 4.2.7
|
||||
text: "Minimize the admission of containers with added capabilities (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that allowedCapabilities is not present in PSPs for the cluster unless
|
||||
it is set to an empty array.
|
||||
scored: false
|
||||
|
||||
- id: 4.2.8
|
||||
text: "Minimize the admission of containers with capabilities assigned (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the use of capabilities in applications running on your cluster. Where a namespace
|
||||
contains applications which do not require any Linux capabities to operate consider adding
|
||||
a PSP which forbids the admission of containers which do not drop all capabilities.
|
||||
scored: false
|
||||
|
||||
- id: 4.3
|
||||
text: "CNI Plugin"
|
||||
checks:
|
||||
- id: 4.3.1
|
||||
text: "Ensure CNI plugin supports network policies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
As with RBAC policies, network policies should adhere to the policy of least privileged
|
||||
access. Start by creating a deny all policy that restricts all inbound and outbound traffic
|
||||
from a namespace or create a global policy using Calico.
|
||||
scored: false
|
||||
|
||||
- id: 4.3.2
|
||||
text: "Ensure that all Namespaces have Network Policies defined (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
scored: false
|
||||
|
||||
- id: 4.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 4.4.1
|
||||
text: "Prefer using secrets as files over secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If possible, rewrite application code to read secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 4.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 4.5
|
||||
text: "Extensible Admission Control"
|
||||
checks: []
|
||||
|
||||
- id: 4.6
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 4.6.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 4.6.2
|
||||
text: "Apply Security Context to Your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply security contexts to your pods. For a
|
||||
suggested list of security contexts, you may refer to the CIS Security Benchmark for Docker
|
||||
Containers.
|
||||
scored: false
|
||||
|
||||
- id: 4.6.3
|
||||
text: "The default namespace should not be used (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
scored: false
|
||||
9
cfg/gke-1.6.0/config.yaml
Normal file
9
cfg/gke-1.6.0/config.yaml
Normal file
@@ -0,0 +1,9 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
|
||||
node:
|
||||
proxy:
|
||||
defaultkubeconfig: "/var/lib/kubelet/kubeconfig"
|
||||
|
||||
kubelet:
|
||||
defaultconf: "/etc/kubernetes/kubelet/kubelet-config.yaml"
|
||||
20
cfg/gke-1.6.0/controlplane.yaml
Normal file
20
cfg/gke-1.6.0/controlplane.yaml
Normal file
@@ -0,0 +1,20 @@
|
||||
---
|
||||
controls:
|
||||
version: "gke-1.6.0"
|
||||
id: 2
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 2.1
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 2.1.1
|
||||
text: "Client certificate authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be
|
||||
implemented in place of client certificates.
|
||||
|
||||
You can remediate the availability of client certificates in your GKE cluster. See
|
||||
Recommendation 5.8.1.
|
||||
scored: false
|
||||
617
cfg/gke-1.6.0/managedservices.yaml
Normal file
617
cfg/gke-1.6.0/managedservices.yaml
Normal file
@@ -0,0 +1,617 @@
|
||||
---
|
||||
controls:
|
||||
version: "gke-1.6.0"
|
||||
id: 5
|
||||
text: "Managed Services"
|
||||
type: "managedservices"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "Image Registry and Image Scanning"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure Image Vulnerability Scanning is enabled (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
For Images Hosted in GCR:
|
||||
Using Command Line:
|
||||
|
||||
gcloud services enable containeranalysis.googleapis.com
|
||||
|
||||
For Images Hosted in AR:
|
||||
Using Command Line:
|
||||
|
||||
gcloud services enable containerscanning.googleapis.com
|
||||
scored: false
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize user access to Container Image repositories (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
For Images Hosted in AR:
|
||||
Using Command Line:
|
||||
|
||||
gcloud artifacts repositories set-iam-policy <repository-name> <path-to-policy-file> \
|
||||
--location <repository-location>
|
||||
|
||||
To learn how to configure policy files see: https://cloud.google.com/artifact-registry/docs/access-control#grant
|
||||
|
||||
For Images Hosted in GCR:
|
||||
Using Command Line:
|
||||
To change roles at the GCR bucket level:
|
||||
Firstly, run the following if read permissions are required:
|
||||
|
||||
gsutil iam ch <type>:<email_address>:objectViewer gs://artifacts.<project_id>.appspot.com
|
||||
|
||||
Then remove the excessively privileged role (Storage Admin / Storage Object
|
||||
Admin / Storage Object Creator) using:
|
||||
|
||||
gsutil iam ch -d <type>:<email_address>:<role> gs://artifacts.<project_id>.appspot.com
|
||||
|
||||
where:
|
||||
<type> can be one of the following:
|
||||
user, if the <email_address> is a Google account.
|
||||
serviceAccount, if <email_address> specifies a Service account.
|
||||
<email_address> can be one of the following:
|
||||
a Google account (for example, someone@example.com).
|
||||
a Cloud IAM service account.
|
||||
|
||||
To modify roles defined at the project level and subsequently inherited within the GCR
|
||||
bucket, or the Service Account User role, extract the IAM policy file, modify it
|
||||
accordingly and apply it using:
|
||||
|
||||
gcloud projects set-iam-policy <project_id> <policy_file>
|
||||
scored: false
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize cluster access to read-only for Container Image repositories (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
For Images Hosted in AR:
|
||||
Using Command Line:
|
||||
Add artifactregistry.reader role
|
||||
|
||||
gcloud artifacts repositories add-iam-policy-binding <repository> \
|
||||
--location=<repository-location> \
|
||||
--member='serviceAccount:<email-address>' \
|
||||
--role='roles/artifactregistry.reader'
|
||||
|
||||
Remove any roles other than artifactregistry.reader
|
||||
|
||||
gcloud artifacts repositories remove-iam-policy-binding <repository> \
|
||||
--location <repository-location> \
|
||||
--member='serviceAccount:<email-address>' \
|
||||
--role='<role-name>'
|
||||
|
||||
For Images Hosted in GCR:
|
||||
For an account explicitly granted to the bucket:
|
||||
Firstly add read access to the Kubernetes Service Account:
|
||||
|
||||
gsutil iam ch <type>:<email_address>:objectViewer gs://artifacts.<project_id>.appspot.com
|
||||
|
||||
where:
|
||||
<type> can be one of the following:
|
||||
user, if the <email_address> is a Google account.
|
||||
serviceAccount, if <email_address> specifies a Service account.
|
||||
<email_address> can be one of the following:
|
||||
a Google account (for example, someone@example.com).
|
||||
a Cloud IAM service account.
|
||||
|
||||
Then remove the excessively privileged role (Storage Admin / Storage Object
|
||||
Admin / Storage Object Creator) using:
|
||||
|
||||
gsutil iam ch -d <type>:<email_address>:<role> gs://artifacts.<project_id>.appspot.com
|
||||
|
||||
For an account that inherits access to the GCR Bucket through Project level
|
||||
permissions, modify the Projects IAM policy file accordingly, then upload it using:
|
||||
|
||||
gcloud projects set-iam-policy <project_id> <policy_file>
|
||||
scored: false
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Ensure only trusted container images are used (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
Update the cluster to enable Binary Authorization:
|
||||
|
||||
gcloud container cluster update <cluster_name> --enable-binauthz
|
||||
|
||||
Create a Binary Authorization Policy using the Binary Authorization Policy Reference:
|
||||
https://cloud.google.com/binary-authorization/docs/policy-yaml-reference for guidance.
|
||||
|
||||
Import the policy file into Binary Authorization:
|
||||
|
||||
gcloud container binauthz policy import <yaml_policy>
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Identity and Access Management (IAM)"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Ensure GKE clusters are not running using the Compute Engine default service account (Automated))"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To create a minimally privileged service account:
|
||||
|
||||
gcloud iam service-accounts create <node_sa_name> \
|
||||
--display-name "GKE Node Service Account"
|
||||
export NODE_SA_EMAIL=gcloud iam service-accounts list \
|
||||
--format='value(email)' --filter='displayName:GKE Node Service Account'
|
||||
|
||||
Grant the following roles to the service account:
|
||||
|
||||
export PROJECT_ID=gcloud config get-value project
|
||||
gcloud projects add-iam-policy-binding <project_id> --member \
|
||||
serviceAccount:<node_sa_email> --role roles/monitoring.metricWriter
|
||||
gcloud projects add-iam-policy-binding <project_id> --member \
|
||||
serviceAccount:<node_sa_email> --role roles/monitoring.viewer
|
||||
gcloud projects add-iam-policy-binding <project_id> --member \
|
||||
serviceAccount:<node_sa_email> --role roles/logging.logWriter
|
||||
|
||||
To create a new Node pool using the Service account, run the following command:
|
||||
|
||||
gcloud container node-pools create <node_pool> \
|
||||
--service-account=<sa_name>@<project_id>.iam.gserviceaccount.com \
|
||||
--cluster=<cluster_name> --zone <compute_zone>
|
||||
|
||||
Note: The workloads will need to be migrated to the new Node pool, and the old node
|
||||
pools that use the default service account should be deleted to complete the
|
||||
remediation.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.2
|
||||
text: "Prefer using dedicated GCP Service Accounts and Workload Identity (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
|
||||
gcloud container clusters update <cluster_name> --zone <cluster_zone> \
|
||||
--workload-pool <project_id>.svc.id.goog
|
||||
|
||||
Note that existing Node pools are unaffected. New Node pools default to --workload-
|
||||
metadata-from-node=GKE_METADATA_SERVER.
|
||||
|
||||
Then, modify existing Node pools to enable GKE_METADATA_SERVER:
|
||||
|
||||
gcloud container node-pools update <node_pool_name> --cluster <cluster_name> \
|
||||
--zone <cluster_zone> --workload-metadata=GKE_METADATA
|
||||
|
||||
Workloads may need to be modified in order for them to use Workload Identity as
|
||||
described within: https://cloud.google.com/kubernetes-engine/docs/how-to/workload-identity.
|
||||
Also consider the effects on the availability of hosted workloads as Node pools
|
||||
are updated. It may be more appropriate to create new Node Pools.
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "Cloud Key Management Service (Cloud KMS)"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure Kubernetes Secrets are encrypted using keys managed in Cloud KMS (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
To create a key:
|
||||
Create a key ring:
|
||||
|
||||
gcloud kms keyrings create <ring_name> --location <location> --project \
|
||||
<key_project_id>
|
||||
|
||||
Create a key:
|
||||
|
||||
gcloud kms keys create <key_name> --location <location> --keyring <ring_name> \
|
||||
--purpose encryption --project <key_project_id>
|
||||
|
||||
Grant the Kubernetes Engine Service Agent service account the Cloud KMS
|
||||
CryptoKey Encrypter/Decrypter role:
|
||||
|
||||
gcloud kms keys add-iam-policy-binding <key_name> --location <location> \
|
||||
--keyring <ring_name> --member serviceAccount:<service_account_name> \
|
||||
--role roles/cloudkms.cryptoKeyEncrypterDecrypter --project <key_project_id>
|
||||
|
||||
To create a new cluster with Application-layer Secrets Encryption:
|
||||
|
||||
gcloud container clusters create <cluster_name> --cluster-version=latest \
|
||||
--zone <zone> \
|
||||
--database-encryption-key projects/<key_project_id>/locations/<location>/keyRings/<ring_name>/cryptoKeys/<key_name> \
|
||||
--project <cluster_project_id>
|
||||
|
||||
To enable on an existing cluster:
|
||||
|
||||
gcloud container clusters update <cluster_name> --zone <zone> \
|
||||
--database-encryption-key projects/<key_project_id>/locations/<location>/keyRings/<ring_name>/cryptoKeys/<key_name> \
|
||||
--project <cluster_project_id>
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Node Metadata"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Ensure the GKE Metadata Server is Enabled (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
|
||||
gcloud container clusters update <cluster_name> --identity-namespace=<project_id>.svc.id.goog
|
||||
|
||||
Note that existing Node pools are unaffected. New Node pools default to --workload-
|
||||
metadata-from-node=GKE_METADATA_SERVER.
|
||||
|
||||
To modify an existing Node pool to enable GKE Metadata Server:
|
||||
|
||||
gcloud container node-pools update <node_pool_name> --cluster=<cluster_name> \
|
||||
--workload-metadata-from-node=GKE_METADATA_SERVER
|
||||
|
||||
Workloads may need modification in order for them to use Workload Identity as
|
||||
described within: https://cloud.google.com/kubernetes-engine/docs/how-to/workload-identity.
|
||||
scored: false
|
||||
|
||||
- id: 5.5
|
||||
text: "Node Configuration and Maintenance"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Ensure Container-Optimized OS (cos_containerd) is used for GKE node images (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To set the node image to cos for an existing cluster's Node pool:
|
||||
|
||||
gcloud container clusters upgrade <cluster_name> --image-type cos_containerd \
|
||||
--zone <compute_zone> --node-pool <node_pool_name>
|
||||
scored: false
|
||||
|
||||
- id: 5.5.2
|
||||
text: "Ensure Node Auto-Repair is enabled for GKE nodes (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To enable node auto-repair for an existing cluster's Node pool:
|
||||
|
||||
gcloud container node-pools update <node_pool_name> --cluster <cluster_name> \
|
||||
--zone <compute_zone> --enable-autorepair
|
||||
scored: false
|
||||
|
||||
- id: 5.5.3
|
||||
text: "Ensure Node Auto-Upgrade is enabled for GKE nodes (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To enable node auto-upgrade for an existing cluster's Node pool, run the following
|
||||
command:
|
||||
|
||||
gcloud container node-pools update <node_pool_name> --cluster <cluster_name> \
|
||||
--zone <cluster_zone> --enable-autoupgrade
|
||||
scored: false
|
||||
|
||||
- id: 5.5.4
|
||||
text: "When creating New Clusters - Automate GKE version management using Release Channels (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
Create a new cluster by running the following command:
|
||||
|
||||
gcloud container clusters create <cluster_name> --zone <cluster_zone> \
|
||||
--release-channel <release_channel>
|
||||
|
||||
where <release_channel> is stable or regular, according to requirements.
|
||||
scored: false
|
||||
|
||||
- id: 5.5.5
|
||||
text: "Ensure Shielded GKE Nodes are Enabled (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To migrate an existing cluster, the flag --enable-shielded-nodes needs to be
|
||||
specified in the cluster update command:
|
||||
|
||||
gcloud container clusters update <cluster_name> --zone <cluster_zone> \
|
||||
--enable-shielded-nodes
|
||||
scored: false
|
||||
|
||||
- id: 5.5.6
|
||||
text: "Ensure Integrity Monitoring for Shielded GKE Nodes is Enabled (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To create a Node pool within the cluster with Integrity Monitoring enabled, run the
|
||||
following command:
|
||||
|
||||
gcloud container node-pools create <node_pool_name> --cluster <cluster_name> \
|
||||
--zone <compute_zone> --shielded-integrity-monitoring
|
||||
|
||||
Workloads from existing non-conforming Node pools will need to be migrated to the
|
||||
newly created Node pool, then delete non-conforming Node pools to complete the
|
||||
remediation
|
||||
scored: false
|
||||
|
||||
- id: 5.5.7
|
||||
text: "Ensure Secure Boot for Shielded GKE Nodes is Enabled (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To create a Node pool within the cluster with Secure Boot enabled, run the following
|
||||
command:
|
||||
|
||||
gcloud container node-pools create <node_pool_name> --cluster <cluster_name> \
|
||||
--zone <compute_zone> --shielded-secure-boot
|
||||
|
||||
Workloads will need to be migrated from existing non-conforming Node pools to the
|
||||
newly created Node pool, then delete the non-conforming pools.
|
||||
scored: false
|
||||
|
||||
- id: 5.6
|
||||
text: "Cluster Networking"
|
||||
checks:
|
||||
- id: 5.6.1
|
||||
text: "Enable VPC Flow Logs and Intranode Visibility (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
1. Find the subnetwork name associated with the cluster.
|
||||
|
||||
gcloud container clusters describe <cluster_name> \
|
||||
--region <cluster_region> - -format json | jq '.subnetwork'
|
||||
|
||||
2. Update the subnetwork to enable VPC Flow Logs.
|
||||
gcloud compute networks subnets update <subnet_name> --enable-flow-logs
|
||||
scored: false
|
||||
|
||||
- id: 5.6.2
|
||||
text: "Ensure use of VPC-native clusters (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To enable Alias IP on a new cluster, run the following command:
|
||||
|
||||
gcloud container clusters create <cluster_name> --zone <compute_zone> \
|
||||
--enable-ip-alias
|
||||
|
||||
If using Autopilot configuration mode:
|
||||
|
||||
gcloud container clusters create-auto <cluster_name> \
|
||||
--zone <compute_zone>
|
||||
scored: false
|
||||
|
||||
- id: 5.6.3
|
||||
text: "Ensure Control Plane Authorized Networks is Enabled (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To enable Control Plane Authorized Networks for an existing cluster, run the following
|
||||
command:
|
||||
|
||||
gcloud container clusters update <cluster_name> --zone <compute_zone> \
|
||||
--enable-master-authorized-networks
|
||||
|
||||
Along with this, you can list authorized networks using the --master-authorized-networks
|
||||
flag which contains a list of up to 20 external networks that are allowed to
|
||||
connect to your cluster's control plane through HTTPS. You provide these networks as
|
||||
a comma-separated list of addresses in CIDR notation (such as 90.90.100.0/24).
|
||||
scored: false
|
||||
|
||||
- id: 5.6.4
|
||||
text: "Ensure clusters are created with Private Endpoint Enabled and Public Access Disabled (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
Create a cluster with a Private Endpoint enabled and Public Access disabled by including
|
||||
the --enable-private-endpoint flag within the cluster create command:
|
||||
|
||||
gcloud container clusters create <cluster_name> --enable-private-endpoint
|
||||
|
||||
Setting this flag also requires the setting of --enable-private-nodes, --enable-ip-alias
|
||||
and --master-ipv4-cidr=<master_cidr_range>.
|
||||
scored: false
|
||||
|
||||
- id: 5.6.5
|
||||
text: "Ensure clusters are created with Private Nodes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To create a cluster with Private Nodes enabled, include the --enable-private-nodes
|
||||
flag within the cluster create command:
|
||||
|
||||
gcloud container clusters create <cluster_name> --enable-private-nodes
|
||||
|
||||
Setting this flag also requires the setting of --enable-ip-alias and
|
||||
--master-ipv4-cidr=<master_cidr_range>.
|
||||
scored: false
|
||||
|
||||
- id: 5.6.6
|
||||
text: "Consider firewalling GKE worker nodes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
Use the following command to generate firewall rules, setting the variables as
|
||||
appropriate:
|
||||
|
||||
gcloud compute firewall-rules create <firewall_rule_name> \
|
||||
--network <network> --priority <priority> --direction <direction> \
|
||||
--action <action> --target-tags <tag> \
|
||||
--target-service-accounts <service_account> \
|
||||
--source-ranges <source_cidr_range> --source-tags <source_tags> \
|
||||
--source-service-accounts <source_service_account> \
|
||||
--destination-ranges <destination_cidr_range> --rules <rules>
|
||||
scored: false
|
||||
|
||||
- id: 5.6.7
|
||||
text: "Ensure use of Google-managed SSL Certificates (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If services of type:LoadBalancer are discovered, consider replacing the Service with
|
||||
an Ingress.
|
||||
|
||||
To configure the Ingress and use Google-managed SSL certificates, follow the
|
||||
instructions as listed at: https://cloud.google.com/kubernetes-engine/docs/how-
|
||||
to/managed-certs.
|
||||
scored: false
|
||||
|
||||
- id: 5.7
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 5.7.1
|
||||
text: "Ensure Logging and Cloud Monitoring is Enabled (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
To enable Logging for an existing cluster, run the following command:
|
||||
gcloud container clusters update <cluster_name> --zone <compute_zone> \
|
||||
--logging=<components_to_be_logged>
|
||||
|
||||
See https://cloud.google.com/sdk/gcloud/reference/container/clusters/update#--logging
|
||||
for a list of available components for logging.
|
||||
|
||||
To enable Cloud Monitoring for an existing cluster, run the following command:
|
||||
gcloud container clusters update <cluster_name> --zone <compute_zone> \
|
||||
--monitoring=<components_to_be_logged>
|
||||
|
||||
See https://cloud.google.com/sdk/gcloud/reference/container/clusters/update#--
|
||||
monitoring for a list of available components for Cloud Monitoring.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.2
|
||||
text: "Enable Linux auditd logging (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
Download the example manifests:
|
||||
curl https://raw.githubusercontent.com/GoogleCloudPlatform/k8s-node-tools/master/os-audit/cos-auditd-logging.yaml > cos-auditd-logging.yaml
|
||||
|
||||
Edit the example manifests if needed. Then, deploy them:
|
||||
kubectl apply -f cos-auditd-logging.yaml
|
||||
|
||||
Verify that the logging Pods have started. If a different Namespace was defined in the
|
||||
manifests, replace cos-auditd with the name of the namespace being used:
|
||||
kubectl get pods --namespace=cos-auditd
|
||||
scored: false
|
||||
|
||||
- id: 5.8
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 5.8.1
|
||||
text: "Ensure authentication using Client Certificates is Disabled (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
Create a new cluster without a Client Certificate:
|
||||
gcloud container clusters create [CLUSTER_NAME] \
|
||||
--no-issue-client-certificate
|
||||
scored: false
|
||||
|
||||
- id: 5.8.2
|
||||
text: "Manage Kubernetes RBAC users with Google Groups for GKE (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
Follow the G Suite Groups instructions at: https://cloud.google.com/kubernetes-
|
||||
engine/docs/how-to/role-based-access-control#google-groups-for-gke.
|
||||
|
||||
Then, create a cluster with:
|
||||
gcloud container clusters create <cluster_name> --security-group <security_group_name>
|
||||
|
||||
Finally create Roles, ClusterRoles, RoleBindings, and ClusterRoleBindings that
|
||||
reference the G Suite Groups.
|
||||
scored: false
|
||||
|
||||
- id: 5.8.3
|
||||
text: "Ensure Legacy Authorization (ABAC) is Disabled (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To disable Legacy Authorization for an existing cluster, run the following command:
|
||||
gcloud container clusters update <cluster_name> --zone <compute_zone> \
|
||||
--no-enable-legacy-authorization
|
||||
scored: false
|
||||
|
||||
- id: 5.9
|
||||
text: "Storage"
|
||||
checks:
|
||||
- id: 5.9.1
|
||||
text: "Enable Customer-Managed Encryption Keys (CMEK) for GKE Persistent Disks (PD) (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
Follow the instructions detailed at: https://cloud.google.com/kubernetes-engine/docs/how-to/using-cmek.
|
||||
scored: false
|
||||
|
||||
- id: 5.9.2
|
||||
text: "Enable Customer-Managed Encryption Keys (CMEK) for Boot Disks (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
Create a new node pool using customer-managed encryption keys for the node boot
|
||||
disk, of <disk_type> either pd-standard or pd-ssd:
|
||||
gcloud container node-pools create <cluster_name> --disk-type <disk_type> \
|
||||
--boot-disk-kms-key projects/<key_project_id>/locations/<location>/keyRings/<ring_name>/cryptoKeys/<key_name>
|
||||
|
||||
Create a cluster using customer-managed encryption keys for the node boot disk, of
|
||||
<disk_type> either pd-standard or pd-ssd:
|
||||
gcloud container clusters create <cluster_name> --disk-type <disk_type> \
|
||||
--boot-disk-kms-key projects/<key_project_id>/locations/<location>/keyRings/<ring_name>/cryptoKeys/<key_name>
|
||||
scored: false
|
||||
|
||||
- id: 5.10
|
||||
text: "Other Cluster Configurations"
|
||||
checks:
|
||||
- id: 5.10.1
|
||||
text: "Ensure Kubernetes Web UI is Disabled (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To disable the Kubernetes Dashboard on an existing cluster, run the following
|
||||
command:
|
||||
gcloud container clusters update <cluster_name> --zone <zone> \
|
||||
--update-addons=KubernetesDashboard=DISABLED
|
||||
scored: false
|
||||
|
||||
- id: 5.10.2
|
||||
text: "Ensure that Alpha clusters are not used for production workloads (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
Upon creating a new cluster
|
||||
gcloud container clusters create [CLUSTER_NAME] \
|
||||
--zone [COMPUTE_ZONE]
|
||||
|
||||
Do not use the --enable-kubernetes-alpha argument.
|
||||
scored: false
|
||||
|
||||
- id: 5.10.3
|
||||
text: "Consider GKE Sandbox for running untrusted workloads (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
To enable GKE Sandbox on an existing cluster, a new Node pool must be created,
|
||||
which can be done using:
|
||||
gcloud container node-pools create <node_pool_name> --zone <compute-zone> \
|
||||
--cluster <cluster_name> --image-type=cos_containerd --sandbox="type=gvisor"
|
||||
scored: false
|
||||
|
||||
- id: 5.10.4
|
||||
text: "Ensure use of Binary Authorization (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Using Command Line:
|
||||
Update the cluster to enable Binary Authorization:
|
||||
gcloud container cluster update <cluster_name> --zone <compute_zone> \
|
||||
--binauthz-evaluation-mode=<evaluation_mode>
|
||||
|
||||
Example:
|
||||
gcloud container clusters update $CLUSTER_NAME --zone $COMPUTE_ZONE \
|
||||
--binauthz-evaluation-mode=PROJECT_SINGLETON_POLICY_ENFORCE
|
||||
|
||||
See: https://cloud.google.com/sdk/gcloud/reference/container/clusters/update#--binauthz-evaluation-mode
|
||||
for more details around the evaluation modes available.
|
||||
|
||||
Create a Binary Authorization Policy using the Binary Authorization Policy Reference:
|
||||
https://cloud.google.com/binary-authorization/docs/policy-yaml-reference for guidance.
|
||||
|
||||
Import the policy file into Binary Authorization:
|
||||
gcloud container binauthz policy import <yaml_policy>
|
||||
scored: false
|
||||
|
||||
- id: 5.10.5
|
||||
text: "Enable Security Posture (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Enable security posture via the UI, gCloud or API.
|
||||
https://cloud.google.com/kubernetes-engine/docs/how-to/protect-workload-configuration
|
||||
scored: false
|
||||
6
cfg/gke-1.6.0/master.yaml
Normal file
6
cfg/gke-1.6.0/master.yaml
Normal file
@@ -0,0 +1,6 @@
|
||||
---
|
||||
controls:
|
||||
version: "gke-1.6.0"
|
||||
id: 1
|
||||
text: "Control Plane Components"
|
||||
type: "master"
|
||||
506
cfg/gke-1.6.0/node.yaml
Normal file
506
cfg/gke-1.6.0/node.yaml
Normal file
@@ -0,0 +1,506 @@
|
||||
---
|
||||
controls:
|
||||
version: "gke-1.6.0"
|
||||
id: 3
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Ensure that the proxy kubeconfig file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c permissions=%a $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on each worker node.
|
||||
For example,
|
||||
|
||||
chmod 644 $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 3.1.2
|
||||
text: "Ensure that the proxy kubeconfig file ownership is set to root:root (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c %U:%G $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on each worker node.
|
||||
For example:
|
||||
|
||||
chown root:root $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 3.1.3
|
||||
text: "Ensure that the kubelet configuration file has permissions set to 600 (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e /home/kubernetes/kubelet-config.yaml; then stat -c permissions=%a /home/kubernetes/kubelet-config.yaml; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command (using the kubelet config file location)
|
||||
|
||||
chmod 644 /home/kubernetes/kubelet-config.yaml
|
||||
scored: true
|
||||
|
||||
- id: 3.1.4
|
||||
text: "Ensure that the kubelet configuration file ownership is set to root:root (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e /home/kubernetes/kubelet-config.yaml; then stat -c %U:%G /home/kubernetes/kubelet-config.yaml; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the following command (using the config file location identied in the Audit step)
|
||||
|
||||
chown root:root /home/kubernetes/kubelet-config.yaml
|
||||
scored: true
|
||||
|
||||
- id: 3.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that the Anonymous Auth is Not Enabled (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat /home/kubernetes/kubelet-config.yaml"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: '{.authentication.anonymous.enabled}'
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Remediation Method 1:
|
||||
If configuring via the Kubelet config file, you first need to locate the file.
|
||||
To do this, SSH to each node and execute the following command to find the kubelet
|
||||
process:
|
||||
|
||||
ps -ef | grep kubelet
|
||||
|
||||
The output of the above command provides details of the active kubelet process, from
|
||||
which we can see the location of the configuration file provided to the kubelet service
|
||||
with the --config argument. The file can be viewed with a command such as more or
|
||||
less, like so:
|
||||
|
||||
sudo less /home/kubernetes/kubelet-config.yaml
|
||||
|
||||
Disable Anonymous Authentication by setting the following parameter:
|
||||
|
||||
"authentication": { "anonymous": { "enabled": false } }
|
||||
|
||||
Remediation Method 2:
|
||||
If using executable arguments, edit the kubelet service file on each worker node and
|
||||
ensure the below parameters are part of the KUBELET_ARGS variable string.
|
||||
|
||||
For systems using systemd, such as the Amazon EKS Optimised Amazon Linux or
|
||||
Bottlerocket AMIs, then this file can be found at
|
||||
/etc/systemd/system/kubelet.service.d/10-kubelet-args.conf. Otherwise,
|
||||
you may need to look up documentation for your chosen operating system to determine
|
||||
which service manager is configured:
|
||||
|
||||
--anonymous-auth=false
|
||||
|
||||
For Both Remediation Steps:
|
||||
Based on your system, restart the kubelet service and check the service status.
|
||||
The following example is for operating systems using systemd, such as the Amazon
|
||||
EKS Optimised Amazon Linux or Bottlerocket AMIs, and invokes the systemctl
|
||||
command. If systemctl is not available then you will need to look up documentation for
|
||||
your chosen operating system to determine which service manager is configured:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
systemctl status kubelet -l
|
||||
scored: true
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat /home/kubernetes/kubelet-config.yaml"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: '{.authorization.mode}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
remediation: |
|
||||
Remediation Method 1:
|
||||
If configuring via the Kubelet config file, you first need to locate the file.
|
||||
To do this, SSH to each node and execute the following command to find the kubelet
|
||||
process:
|
||||
|
||||
ps -ef | grep kubelet
|
||||
|
||||
The output of the above command provides details of the active kubelet process, from
|
||||
which we can see the location of the configuration file provided to the kubelet service
|
||||
with the --config argument. The file can be viewed with a command such as more or
|
||||
less, like so:
|
||||
|
||||
sudo less /path/to/kubelet-config.json
|
||||
|
||||
Enable Webhook Authentication by setting the following parameter:
|
||||
|
||||
"authentication": { "webhook": { "enabled": true } }
|
||||
|
||||
Next, set the Authorization Mode to Webhook by setting the following parameter:
|
||||
|
||||
"authorization": { "mode": "Webhook }
|
||||
|
||||
Finer detail of the authentication and authorization fields can be found in the
|
||||
Kubelet Configuration documentation (https://kubernetes.io/docs/reference/config-api/kubelet-config.v1beta1/).
|
||||
|
||||
Remediation Method 2:
|
||||
If using executable arguments, edit the kubelet service file on each worker node and
|
||||
ensure the below parameters are part of the KUBELET_ARGS variable string.
|
||||
For systems using systemd, such as the Amazon EKS Optimised Amazon Linux or
|
||||
Bottlerocket AMIs, then this file can be found at
|
||||
/etc/systemd/system/kubelet.service.d/10-kubelet-args.conf. Otherwise,
|
||||
you may need to look up documentation for your chosen operating system to determine
|
||||
which service manager is configured:
|
||||
|
||||
--authentication-token-webhook
|
||||
--authorization-mode=Webhook
|
||||
|
||||
For Both Remediation Steps:
|
||||
Based on your system, restart the kubelet service and check the service status.
|
||||
The following example is for operating systems using systemd, such as the Amazon
|
||||
EKS Optimised Amazon Linux or Bottlerocket AMIs, and invokes the systemctl
|
||||
command. If systemctl is not available then you will need to look up documentation for
|
||||
your chosen operating system to determine which service manager is configured:
|
||||
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
systemctl status kubelet -l
|
||||
scored: true
|
||||
|
||||
- id: 3.2.3
|
||||
text: "Ensure that a Client CA File is Configured (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat /home/kubernetes/kubelet-config.yaml"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: '{.authentication.x509.clientCAFile}'
|
||||
set: true
|
||||
remediation: |
|
||||
Remediation Method 1:
|
||||
If configuring via the Kubelet config file, you first need to locate the file.
|
||||
To do this, SSH to each node and execute the following command to find the kubelet
|
||||
process:
|
||||
|
||||
ps -ef | grep kubelet
|
||||
|
||||
The output of the above command provides details of the active kubelet process, from
|
||||
which we can see the location of the configuration file provided to the kubelet service
|
||||
with the --config argument. The file can be viewed with a command such as more or
|
||||
less, like so:
|
||||
|
||||
sudo less /path/to/kubelet-config.json
|
||||
|
||||
Configure the client certificate authority file by setting the following parameter
|
||||
appropriately:
|
||||
|
||||
"authentication": { "x509": {"clientCAFile": <path/to/client-ca-file> } }"
|
||||
|
||||
Remediation Method 2:
|
||||
If using executable arguments, edit the kubelet service file on each worker node and
|
||||
ensure the below parameters are part of the KUBELET_ARGS variable string.
|
||||
For systems using systemd, such as the Amazon EKS Optimised Amazon Linux or
|
||||
Bottlerocket AMIs, then this file can be found at
|
||||
/etc/systemd/system/kubelet.service.d/10-kubelet-args.conf. Otherwise,
|
||||
you may need to look up documentation for your chosen operating system to determine
|
||||
which service manager is configured:
|
||||
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
|
||||
For Both Remediation Steps:
|
||||
Based on your system, restart the kubelet service and check the service status.
|
||||
The following example is for operating systems using systemd, such as the Amazon
|
||||
EKS Optimised Amazon Linux or Bottlerocket AMIs, and invokes the systemctl
|
||||
command. If systemctl is not available then you will need to look up documentation for
|
||||
your chosen operating system to determine which service manager is configured:
|
||||
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
systemctl status kubelet -l
|
||||
scored: true
|
||||
|
||||
- id: 3.2.4
|
||||
text: "Ensure that the --read-only-port argument is disabled (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat /home/kubernetes/kubelet-config.yaml"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
set: false
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If modifying the Kubelet config file, edit the kubelet-config.json file
|
||||
/etc/kubernetes/kubelet/kubelet-config.json and set the below parameter to 0
|
||||
|
||||
"readOnlyPort": 0
|
||||
|
||||
If using executable arguments, edit the kubelet service file
|
||||
/etc/systemd/system/kubelet.service.d/10-kubelet-args.conf on each
|
||||
worker node and add the below parameter at the end of the KUBELET_ARGS variable
|
||||
string.
|
||||
|
||||
--read-only-port=0
|
||||
|
||||
For each remediation:
|
||||
Based on your system, restart the kubelet service and check status
|
||||
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
systemctl status kubelet -l
|
||||
scored: true
|
||||
|
||||
- id: 3.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat /home/kubernetes/kubelet-config.yaml"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
Remediation Method 1:
|
||||
If modifying the Kubelet config file, edit the kubelet-config.json file
|
||||
/etc/kubernetes/kubelet-config.yaml and set the below parameter to a non-zero
|
||||
value in the format of #h#m#s
|
||||
|
||||
"streamingConnectionIdleTimeout": "4h0m0s"
|
||||
|
||||
You should ensure that the kubelet service file
|
||||
/etc/systemd/system/kubelet.service.d/10-kubelet-args.conf does not
|
||||
specify a --streaming-connection-idle-timeout argument because it would
|
||||
override the Kubelet config file.
|
||||
|
||||
Remediation Method 2:
|
||||
If using executable arguments, edit the kubelet service file
|
||||
/etc/systemd/system/kubelet.service.d/10-kubelet-args.conf on each
|
||||
worker node and add the below parameter at the end of the KUBELET_ARGS variable
|
||||
string.
|
||||
|
||||
--streaming-connection-idle-timeout=4h0m0s
|
||||
|
||||
Remediation Method 3:
|
||||
If using the api configz endpoint consider searching for the status of
|
||||
"streamingConnectionIdleTimeout": by extracting the live configuration from the
|
||||
nodes running kubelet.
|
||||
**See detailed step-by-step configmap procedures in Reconfigure a Node's Kubelet in a
|
||||
Live Cluster (https://kubernetes.io/docs/tasks/administer-cluster/reconfigure-kubelet/),
|
||||
and then rerun the curl statement from audit process to check for kubelet
|
||||
configuration changes
|
||||
|
||||
kubectl proxy --port=8001 &
|
||||
export HOSTNAME_PORT=localhost:8001 (example host and port number)
|
||||
export NODE_NAME=gke-cluster-1-pool1-5e572947-r2hg (example node name from
|
||||
"kubectl get nodes")
|
||||
curl -sSL "http://${HOSTNAME_PORT}/api/v1/nodes/${NODE_NAME}/proxy/configz"
|
||||
|
||||
For all three remediations:
|
||||
Based on your system, restart the kubelet service and check status
|
||||
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
systemctl status kubelet -l
|
||||
scored: true
|
||||
|
||||
- id: 3.2.6
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat /home/kubernetes/kubelet-config.yaml"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --make-iptables-utils-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
Remediation Method 1:
|
||||
If modifying the Kubelet config file, edit the kubelet-config.json file
|
||||
/etc/kubernetes/kubelet/kubelet-config.json and set the below parameter to
|
||||
true
|
||||
|
||||
"makeIPTablesUtilChains": true
|
||||
|
||||
Ensure that /etc/systemd/system/kubelet.service.d/10-kubelet-args.conf
|
||||
does not set the --make-iptables-util-chains argument because that would
|
||||
override your Kubelet config file.
|
||||
|
||||
Remediation Method 2:
|
||||
If using executable arguments, edit the kubelet service file
|
||||
/etc/systemd/system/kubelet.service.d/10-kubelet-args.conf on each
|
||||
worker node and add the below parameter at the end of the KUBELET_ARGS variable
|
||||
string.
|
||||
|
||||
--make-iptables-util-chains:true
|
||||
|
||||
Remediation Method 3:
|
||||
If using the api configz endpoint consider searching for the status of
|
||||
"makeIPTablesUtilChains.: true by extracting the live configuration from the nodes
|
||||
running kubelet.
|
||||
|
||||
**See detailed step-by-step configmap procedures in Reconfigure a Node's Kubelet in a
|
||||
Live Cluster (https://kubernetes.io/docs/tasks/administer-cluster/reconfigure-kubelet/),
|
||||
and then rerun the curl statement from audit process to check for kubelet
|
||||
configuration changes
|
||||
|
||||
kubectl proxy --port=8001 &
|
||||
export HOSTNAME_PORT=localhost:8001 (example host and port number)
|
||||
export NODE_NAME=gke-cluster-1-pool1-5e572947-r2hg (example node name from
|
||||
"kubectl get nodes")
|
||||
curl -sSL "http://${HOSTNAME_PORT}/api/v1/nodes/${NODE_NAME}/proxy/configz"
|
||||
|
||||
For all three remediations:
|
||||
Based on your system, restart the kubelet service and check status
|
||||
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
systemctl status kubelet -l
|
||||
scored: true
|
||||
|
||||
- id: 3.2.7
|
||||
text: "Ensure that the --eventRecordQPS argument is set to 0 or a level which ensures appropriate event capture (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat /etc/systemd/system/kubelet.service.d/10-kubeadm.conf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
set: true
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set eventRecordQPS: to an appropriate level.
|
||||
|
||||
If using command line arguments, edit the kubelet service file /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
|
||||
on each worker node and set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 3.2.8
|
||||
text: "Ensure that the --rotate-certificates argument is not present or is set to true (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat /home/kubernetes/kubelet-config.yaml"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
Remediation Method 1:
|
||||
If modifying the Kubelet config file, edit the kubelet-config.yaml file
|
||||
/etc/kubernetes/kubelet/kubelet-config.yaml and set the below parameter to
|
||||
true
|
||||
|
||||
"RotateCertificate":true
|
||||
|
||||
Additionally, ensure that the kubelet service file
|
||||
/etc/systemd/system/kubelet.service.d/10-kubelet-args.conf does not set the --RotateCertificate
|
||||
executable argument to false because this would override the Kubelet
|
||||
config file.
|
||||
|
||||
Remediation Method 2:
|
||||
If using executable arguments, edit the kubelet service file
|
||||
/etc/systemd/system/kubelet.service.d/10-kubelet-args.conf on each
|
||||
worker node and add the below parameter at the end of the KUBELET_ARGS variable
|
||||
string.
|
||||
|
||||
--RotateCertificate=true
|
||||
scored: true
|
||||
|
||||
- id: 3.2.9
|
||||
text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/cat /home/kubernetes/kubelet-config.yaml"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Remediation Method 1:
|
||||
If modifying the Kubelet config file, edit the kubelet-config.json file
|
||||
/etc/kubernetes/kubelet-config.yaml and set the below parameter to true
|
||||
|
||||
"featureGates": {
|
||||
"RotateKubeletServerCertificate":true
|
||||
},
|
||||
|
||||
Additionally, ensure that the kubelet service file
|
||||
/etc/systemd/system/kubelet.service.d/10-kubelet-args.conf does not set
|
||||
the --rotate-kubelet-server-certificate executable argument to false because
|
||||
this would override the Kubelet config file.
|
||||
|
||||
Remediation Method 2:
|
||||
If using executable arguments, edit the kubelet service file
|
||||
/etc/systemd/system/kubelet.service.d/10-kubelet-args.conf on each
|
||||
worker node and add the below parameter at the end of the KUBELET_ARGS variable
|
||||
string.
|
||||
|
||||
--rotate-kubelet-server-certificate=true
|
||||
|
||||
Remediation Method 3:
|
||||
If using the api configz endpoint consider searching for the status of
|
||||
"RotateKubeletServerCertificate": by extracting the live configuration from the
|
||||
nodes running kubelet.
|
||||
**See detailed step-by-step configmap procedures in Reconfigure a Node's Kubelet in a
|
||||
Live Cluster (https://kubernetes.io/docs/tasks/administer-cluster/reconfigure-kubelet/),
|
||||
and then rerun the curl statement from audit process to check for kubelet
|
||||
configuration changes
|
||||
|
||||
kubectl proxy --port=8001 &
|
||||
export HOSTNAME_PORT=localhost:8001 (example host and port number)
|
||||
export NODE_NAME=gke-cluster-1-pool1-5e572947-r2hg (example node name from
|
||||
"kubectl get nodes")
|
||||
curl -sSL "http://${HOSTNAME_PORT}/api/v1/nodes/${NODE_NAME}/proxy/configz"
|
||||
|
||||
For all three remediation methods:
|
||||
Restart the kubelet service and check status. The example below is for when using
|
||||
systemctl to manage services:
|
||||
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
systemctl status kubelet -l
|
||||
scored: true
|
||||
238
cfg/gke-1.6.0/policies.yaml
Normal file
238
cfg/gke-1.6.0/policies.yaml
Normal file
@@ -0,0 +1,238 @@
|
||||
---
|
||||
controls:
|
||||
version: "gke-1.6.0"
|
||||
id: 4
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role :
|
||||
|
||||
kubectl delete clusterrolebinding [name]
|
||||
scored: false
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Minimize access to secrets (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to secret objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 4.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
scored: false
|
||||
|
||||
- id: 4.1.4
|
||||
text: "Ensure that default service accounts are not actively used (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific
|
||||
access to the Kubernetes API server.
|
||||
|
||||
Modify the configuration of each default service account to include this value
|
||||
|
||||
automountServiceAccountToken: false
|
||||
scored: false
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Modify the definition of pods and service accounts which do not need to mount service
|
||||
account tokens to disable it.
|
||||
scored: false
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Avoid use of system:masters group (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 4.1.8
|
||||
text: "Avoid bindings to system:anonymous (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings and rolebindings to the user system:anonymous.
|
||||
Check if they are used and review the permissions associated with the binding using the
|
||||
commands in the Audit section above or refer to GKE documentation
|
||||
(https://cloud.google.com/kubernetes-engine/docs/best-practices/rbac#detect-prevent-default).
|
||||
|
||||
Strongly consider replacing unsafe bindings with an authenticated, user-defined group.
|
||||
Where possible, bind to non-default, user-defined groups with least-privilege roles.
|
||||
|
||||
If there are any unsafe bindings to the user system:anonymous, proceed to delete them
|
||||
after consideration for cluster operations with only necessary, safer bindings.
|
||||
|
||||
kubectl delete clusterrolebinding [CLUSTER_ROLE_BINDING_NAME]
|
||||
kubectl delete rolebinding [ROLE_BINDING_NAME] --namespace [ROLE_BINDING_NAMESPACE]
|
||||
scored: false
|
||||
|
||||
- id: 4.1.9
|
||||
text: "Avoid non-default bindings to system:unauthenticated (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all non-default clusterrolebindings and rolebindings to the group
|
||||
system:unauthenticated. Check if they are used and review the permissions
|
||||
associated with the binding using the commands in the Audit section above or refer to
|
||||
GKE documentation (https://cloud.google.com/kubernetes-engine/docs/best-practices/rbac#detect-prevent-default).
|
||||
|
||||
Strongly consider replacing non-default, unsafe bindings with an authenticated, user-
|
||||
defined group. Where possible, bind to non-default, user-defined groups with least-
|
||||
privilege roles.
|
||||
|
||||
If there are any non-default, unsafe bindings to the group system:unauthenticated,
|
||||
proceed to delete them after consideration for cluster operations with only necessary,
|
||||
safer bindings.
|
||||
|
||||
kubectl delete clusterrolebinding [CLUSTER_ROLE_BINDING_NAME]
|
||||
kubectl delete rolebinding [ROLE_BINDING_NAME] --namespace [ROLE_BINDING_NAMESPACE]
|
||||
scored: false
|
||||
|
||||
- id: 4.1.10
|
||||
text: "Avoid non-default bindings to system:authenticated (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all non-default clusterrolebindings and rolebindings to the group
|
||||
system:authenticated. Check if they are used and review the permissions associated
|
||||
with the binding using the commands in the Audit section above or refer to GKE
|
||||
documentation.
|
||||
|
||||
Strongly consider replacing non-default, unsafe bindings with an authenticated, user-
|
||||
defined group. Where possible, bind to non-default, user-defined groups with least-
|
||||
privilege roles.
|
||||
|
||||
If there are any non-default, unsafe bindings to the group system:authenticated,
|
||||
proceed to delete them after consideration for cluster operations with only necessary,
|
||||
safer bindings.
|
||||
|
||||
kubectl delete clusterrolebinding [CLUSTER_ROLE_BINDING_NAME]
|
||||
kubectl delete rolebinding [ROLE_BINDING_NAME] --namespace [ROLE_BINDING_NAMESPACE]
|
||||
scored: false
|
||||
|
||||
- id: 4.2
|
||||
text: "Pod Security Standards"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the cluster enforces Pod Security Standard Baseline profile or stricter for all namespaces. (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that Pod Security Admission is in place for every namespace which contains
|
||||
user workloads.
|
||||
Run the following command to enforce the Baseline profile in a namespace:
|
||||
|
||||
kubectl label namespace pod-security.kubernetes.io/enforce=baseline
|
||||
scored: false
|
||||
|
||||
- id: 4.3
|
||||
text: "Network Policies and CNI"
|
||||
checks:
|
||||
- id: 4.3.1
|
||||
text: "Ensure that the CNI in use supports Network Policies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
To use a CNI plugin with Network Policy, enable Network Policy in GKE, and the CNI plugin
|
||||
will be updated. See Recommendation 5.6.7.
|
||||
scored: false
|
||||
|
||||
- id: 4.3.2
|
||||
text: "Ensure that all Namespaces have Network Policies defined (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as needed.
|
||||
See: https://cloud.google.com/kubernetes-engine/docs/how-to/network-policy#creating_a_network_policy
|
||||
for more information.
|
||||
scored: false
|
||||
|
||||
- id: 4.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 4.4.1
|
||||
text: "Prefer using secrets as files over secrets as environment variables (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
if possible, rewrite application code to read secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 4.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 4.5
|
||||
text: "Extensible Admission Control"
|
||||
checks:
|
||||
- id: 4.5.1
|
||||
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup image provenance.
|
||||
Also see recommendation 5.10.4.
|
||||
scored: false
|
||||
|
||||
- id: 4.6
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 4.6.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 4.6.2
|
||||
text: "Ensure that the seccomp profile is set to RuntimeDefault in your pod definitions (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Use security context to enable the RuntimeDefault seccomp profile in your pod
|
||||
definitions. An example is as below:
|
||||
|
||||
{
|
||||
"namespace": "kube-system",
|
||||
"name": "metrics-server-v0.7.0-dbcc8ddf6-gz7d4",
|
||||
"seccompProfile": "RuntimeDefault"
|
||||
}
|
||||
scored: false
|
||||
|
||||
- id: 4.6.3
|
||||
text: "Apply Security Context to Your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply security contexts to your pods. For a
|
||||
suggested list of security contexts, you may refer to the CIS Google Container-
|
||||
Optimized OS Benchmark.
|
||||
scored: false
|
||||
|
||||
- id: 4.6.4
|
||||
text: "The default namespace should not be used (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
scored: false
|
||||
47
cfg/k3s-cis-1.23/config.yaml
Normal file
47
cfg/k3s-cis-1.23/config.yaml
Normal file
@@ -0,0 +1,47 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
|
||||
master:
|
||||
components:
|
||||
- apiserver
|
||||
- scheduler
|
||||
- controllermanager
|
||||
- etcd
|
||||
- policies
|
||||
|
||||
apiserver:
|
||||
bins:
|
||||
- containerd
|
||||
|
||||
scheduler:
|
||||
bins:
|
||||
- containerd
|
||||
|
||||
controllermanager:
|
||||
bins:
|
||||
- containerd
|
||||
|
||||
etcd:
|
||||
bins:
|
||||
- containerd
|
||||
datadirs:
|
||||
- /var/lib/rancher/k3s/server/db/etcd
|
||||
node:
|
||||
components:
|
||||
- kubelet
|
||||
- proxy
|
||||
|
||||
kubelet:
|
||||
bins:
|
||||
- containerd
|
||||
defaultkubeconfig: /var/lib/rancher/k3s/agent/kubelet.kubeconfig
|
||||
defaultcafile: /var/lib/rancher/k3s/agent/client-ca.crt
|
||||
|
||||
proxy:
|
||||
bins:
|
||||
- containerd
|
||||
defaultkubeconfig: /var/lib/rancher/k3s/agent/kubeproxy.kubeconfig
|
||||
|
||||
policies:
|
||||
components:
|
||||
- policies
|
||||
47
cfg/k3s-cis-1.23/controlplane.yaml
Normal file
47
cfg/k3s-cis-1.23/controlplane.yaml
Normal file
@@ -0,0 +1,47 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.23"
|
||||
id: 3
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Client certificate authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be
|
||||
implemented in place of client certificates.
|
||||
scored: false
|
||||
|
||||
- id: 3.2
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that a minimal audit policy is created (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'audit-policy-file'"
|
||||
type: "manual"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-policy-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Create an audit policy file for your cluster.
|
||||
scored: false
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the audit policy covers key security concerns (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the audit policy provided for the cluster and ensure that it covers
|
||||
at least the following areas,
|
||||
- Access to Secrets managed by the cluster. Care should be taken to only
|
||||
log Metadata for requests to Secrets, ConfigMaps, and TokenReviews, in
|
||||
order to avoid risk of logging sensitive data.
|
||||
- Modification of Pod and Deployment objects.
|
||||
- Use of `pods/exec`, `pods/portforward`, `pods/proxy` and `services/proxy`.
|
||||
For most requests, minimally logging at the Metadata level is recommended
|
||||
(the most basic level of logging).
|
||||
scored: false
|
||||
137
cfg/k3s-cis-1.23/etcd.yaml
Normal file
137
cfg/k3s-cis-1.23/etcd.yaml
Normal file
@@ -0,0 +1,137 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.23"
|
||||
id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
type: "etcd"
|
||||
groups:
|
||||
- id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
checks:
|
||||
- id: 2.1
|
||||
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Automated)"
|
||||
audit: "grep -A 4 'client-transport-security' $etcdconf | grep -E 'cert-file|key-file'"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "cert-file"
|
||||
set: true
|
||||
- flag: "key-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure TLS encryption.
|
||||
Then, edit the etcd pod specification file /etc/kubernetes/manifests/etcd.yaml
|
||||
on the master node and set the below parameters.
|
||||
--cert-file=</path/to/ca-file>
|
||||
--key-file=</path/to/key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.2
|
||||
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
|
||||
audit: "grep -A 4 'client-transport-security' $etcdconf | grep 'client-cert-auth'"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--client-cert-auth"
|
||||
set: true
|
||||
- flag: "client-cert-auth"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--client-cert-auth="true"
|
||||
scored: true
|
||||
|
||||
- id: 2.3
|
||||
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
|
||||
audit: "if grep -q '^auto-tls' $etcdconf;then grep '^auto-tls' $etcdconf;else echo 'notset';fi"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--auto-tls"
|
||||
set: false
|
||||
- flag: "--auto-tls"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --auto-tls parameter or set it to false.
|
||||
--auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.4
|
||||
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "grep -A 4 'peer-transport-security' $etcdconf | grep -E 'cert-file|key-file'"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "cert-file"
|
||||
set: true
|
||||
- flag: "key-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure peer TLS encryption as appropriate
|
||||
for your etcd cluster.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameters.
|
||||
--peer-client-file=</path/to/peer-cert-file>
|
||||
--peer-key-file=</path/to/peer-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.5
|
||||
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
|
||||
audit: "grep -A 4 'peer-transport-security' $etcdconf | grep 'client-cert-auth'"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--client-cert-auth"
|
||||
set: true
|
||||
- flag: "client-cert-auth"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--peer-client-cert-auth=true
|
||||
scored: true
|
||||
|
||||
- id: 2.6
|
||||
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
|
||||
audit: "if grep -q '^peer-auto-tls' $etcdconf;then grep '^peer-auto-tls' $etcdconf;else echo 'notset';fi"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--peer-auto-tls"
|
||||
set: false
|
||||
- flag: "--peer-auto-tls"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
set: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --peer-auto-tls parameter or set it to false.
|
||||
--peer-auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.7
|
||||
text: "Ensure that a unique Certificate Authority is used for etcd (Manual)"
|
||||
audit: "if grep -q 'trusted-ca-file' $etcdconf;then grep 'trusted-ca-file' $etcdconf;else echo 'notset';fi"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "trusted-ca-file"
|
||||
set: true
|
||||
remediation: |
|
||||
[Manual test]
|
||||
Follow the etcd documentation and create a dedicated certificate authority setup for the
|
||||
etcd service.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameter.
|
||||
--trusted-ca-file=</path/to/ca-file>
|
||||
scored: false
|
||||
986
cfg/k3s-cis-1.23/master.yaml
Normal file
986
cfg/k3s-cis-1.23/master.yaml
Normal file
@@ -0,0 +1,986 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.23"
|
||||
id: 1
|
||||
text: "Control Plane Security Configuration"
|
||||
type: "master"
|
||||
groups:
|
||||
- id: 1.1
|
||||
text: "Control Plane Node Configuration Files"
|
||||
checks:
|
||||
- id: 1.1.1
|
||||
text: "Ensure that the API server pod specification file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c permissions=%a $apiserverconf; fi'"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the
|
||||
control plane node.
|
||||
For example, chmod 644 $apiserverconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.2
|
||||
text: "Ensure that the API server pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c %U:%G $apiserverconf; fi'"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $apiserverconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.3
|
||||
text: "Ensure that the controller manager pod specification file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c permissions=%a $controllermanagerconf; fi'"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 644 $controllermanagerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.4
|
||||
text: "Ensure that the controller manager pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c %U:%G $controllermanagerconf; fi'"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $controllermanagerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.5
|
||||
text: "Ensure that the scheduler pod specification file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c permissions=%a $schedulerconf; fi'"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 644 $schedulerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.6
|
||||
text: "Ensure that the scheduler pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c %U:%G $schedulerconf; fi'"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $schedulerconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.7
|
||||
text: "Ensure that the etcd pod specification file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then stat -c permissions=%a $etcdconf; fi'"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 644 $etcdconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.8
|
||||
text: "Ensure that the etcd pod specification file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then stat -c %U:%G $etcdconf; fi'"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $etcdconf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.9
|
||||
text: "Ensure that the Container Network Interface file permissions are set to 644 or more restrictive (Manual)"
|
||||
type: "skip"
|
||||
audit: |
|
||||
ps -ef | grep $kubeletbin | grep -- --cni-conf-dir | sed 's%.*cni-conf-dir[= ]\([^ ]*\).*%\1%' | xargs -I{} find {} -mindepth 1 | xargs --no-run-if-empty stat -c permissions=%a
|
||||
find /var/lib/cni/networks -type f 2> /dev/null | xargs --no-run-if-empty stat -c permissions=%a
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 644 <path/to/cni/files>
|
||||
scored: false
|
||||
|
||||
- id: 1.1.10
|
||||
text: "Ensure that the Container Network Interface file ownership is set to root:root (Manual)"
|
||||
type: "skip"
|
||||
audit: |
|
||||
ps -ef | grep $kubeletbin | grep -- --cni-conf-dir | sed 's%.*cni-conf-dir[= ]\([^ ]*\).*%\1%' | xargs -I{} find {} -mindepth 1 | xargs --no-run-if-empty stat -c %U:%G
|
||||
find /var/lib/cni/networks -type f 2> /dev/null | xargs --no-run-if-empty stat -c %U:%G
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root <path/to/cni/files>
|
||||
scored: false
|
||||
|
||||
- id: 1.1.11
|
||||
text: "Ensure that the etcd data directory permissions are set to 700 or more restrictive (Automated)"
|
||||
audit: "stat -c %a $etcddatadir"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "700"
|
||||
compare:
|
||||
op: eq
|
||||
value: "700"
|
||||
set: true
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above). For example,
|
||||
chmod 700 /var/lib/etcd
|
||||
scored: true
|
||||
|
||||
- id: 1.1.12
|
||||
text: "Ensure that the etcd data directory ownership is set to etcd:etcd (Automated)"
|
||||
audit: ps -ef | grep $etcdbin | grep -- --data-dir | sed 's%.*data-dir[= ]\([^ ]*\).*%\1%' | xargs stat -c %U:%G
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "etcd:etcd"
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above).
|
||||
For example, chown etcd:etcd /var/lib/etcd
|
||||
scored: true
|
||||
|
||||
- id: 1.1.13
|
||||
text: "Ensure that the admin.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /var/lib/rancher/k3s/server/cred/admin.kubeconfig; then stat -c permissions=%a /var/lib/rancher/k3s/server/cred/admin.kubeconfig'"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "600"
|
||||
compare:
|
||||
op: eq
|
||||
value: "600"
|
||||
set: true
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 /var/lib/rancher/k3s/server/cred/admin.kubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.14
|
||||
text: "Ensure that the admin.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /var/lib/rancher/k3s/server/cred/admin.kubeconfig; then stat -c %U:%G /var/lib/rancher/k3s/server/cred/admin.kubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
compare:
|
||||
op: eq
|
||||
value: "root:root"
|
||||
set: true
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root /etc/kubernetes/admin.conf
|
||||
scored: true
|
||||
|
||||
- id: 1.1.15
|
||||
text: "Ensure that the scheduler.conf file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /var/lib/rancher/k3s/server/cred/scheduler.kubeconfig; then stat -c permissions=%a /var/lib/rancher/k3s/server/cred/scheduler.kubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 644 $schedulerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.16
|
||||
text: "Ensure that the scheduler.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /var/lib/rancher/k3s/server/cred/scheduler.kubeconfig; then stat -c %U:%G /var/lib/rancher/k3s/server/cred/scheduler.kubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $schedulerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.17
|
||||
text: "Ensure that the controller-manager.conf file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /var/lib/rancher/k3s/server/cred/controller.kubeconfig; then stat -c permissions=%a /var/lib/rancher/k3s/server/cred/controller.kubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 644 $controllermanagerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.18
|
||||
text: "Ensure that the controller-manager.conf file ownership is set to root:root (Automated)"
|
||||
audit: "stat -c %U:%G /var/lib/rancher/k3s/server/tls"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
compare:
|
||||
op: eq
|
||||
value: "root:root"
|
||||
set: true
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $controllermanagerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.19
|
||||
text: "Ensure that the Kubernetes PKI directory and file ownership is set to root:root (Automated)"
|
||||
audit: "find /var/lib/rancher/k3s/server/tls | xargs stat -c %U:%G"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown -R root:root /etc/kubernetes/pki/
|
||||
scored: true
|
||||
|
||||
- id: 1.1.20
|
||||
text: "Ensure that the Kubernetes PKI certificate file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: "stat -c %n\ %a /var/lib/rancher/k3s/server/tls/*.crt"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod -R 644 /etc/kubernetes/pki/*.crt
|
||||
scored: false
|
||||
|
||||
- id: 1.1.21
|
||||
text: "Ensure that the Kubernetes PKI key file permissions are set to 600 (Manual)"
|
||||
audit: "stat -c %n\ %a /var/lib/rancher/k3s/server/tls/*.key"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod -R 600 /etc/kubernetes/pki/*.key
|
||||
scored: false
|
||||
|
||||
- id: 1.2
|
||||
text: "API Server"
|
||||
checks:
|
||||
- id: 1.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'anonymous-auth'"
|
||||
type: manual
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--anonymous-auth=false
|
||||
scored: false
|
||||
|
||||
- id: 1.2.2
|
||||
text: "Ensure that the --token-auth-file parameter is not set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--token-auth-file"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and configure alternate mechanisms for authentication. Then,
|
||||
edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and remove the --token-auth-file=<filename> parameter.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.3
|
||||
text: "Ensure that the --DenyServiceExternalIPs is not set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "DenyServiceExternalIPs"
|
||||
set: true
|
||||
- flag: "--enable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and remove the `DenyServiceExternalIPs`
|
||||
from enabled admission plugins.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.4
|
||||
text: "Ensure that the --kubelet-https argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'kubelet-https'"
|
||||
type: "skip"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--kubelet-https"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: "--kubelet-https"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and remove the --kubelet-https parameter.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.5
|
||||
text: "Ensure that the --kubelet-client-certificate and --kubelet-client-key arguments are set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'kubelet-certificate-authority'"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--kubelet-client-certificate"
|
||||
- flag: "--kubelet-client-key"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the
|
||||
apiserver and kubelets. Then, edit API server pod specification file
|
||||
$apiserverconf on the control plane node and set the
|
||||
kubelet client certificate and key parameters as below.
|
||||
--kubelet-client-certificate=<path/to/client-certificate-file>
|
||||
--kubelet-client-key=<path/to/client-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.6
|
||||
text: "Ensure that the --kubelet-certificate-authority argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'kubelet-certificate-authority'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--kubelet-certificate-authority"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup the TLS connection between
|
||||
the apiserver and kubelets. Then, edit the API server pod specification file
|
||||
$apiserverconf on the control plane node and set the
|
||||
--kubelet-certificate-authority parameter to the path to the cert file for the certificate authority.
|
||||
--kubelet-certificate-authority=<ca-string>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.7
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'authorization-mode'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "AlwaysAllow"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to values other than AlwaysAllow.
|
||||
One such example could be as below.
|
||||
--authorization-mode=RBAC
|
||||
scored: true
|
||||
|
||||
- id: 1.2.8
|
||||
text: "Ensure that the --authorization-mode argument includes Node (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'authorization-mode'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "Node"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to a value that includes Node.
|
||||
--authorization-mode=Node,RBAC
|
||||
scored: true
|
||||
|
||||
- id: 1.2.9
|
||||
text: "Ensure that the --authorization-mode argument includes RBAC (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'authorization-mode'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "RBAC"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to a value that includes RBAC,
|
||||
for example `--authorization-mode=Node,RBAC`.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.10
|
||||
text: "Ensure that the admission control plugin EventRateLimit is set (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'enable-admission-plugins'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "EventRateLimit"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set the desired limits in a configuration file.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
and set the below parameters.
|
||||
--enable-admission-plugins=...,EventRateLimit,...
|
||||
--admission-control-config-file=<path/to/configuration/file>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.11
|
||||
text: "Ensure that the admission control plugin AlwaysAdmit is not set (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'enable-admission-plugins'"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAdmit
|
||||
- flag: "--enable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and either remove the --enable-admission-plugins parameter, or set it to a
|
||||
value that does not include AlwaysAdmit.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.12
|
||||
text: "Ensure that the admission control plugin AlwaysPullImages is set (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "AlwaysPullImages"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to include
|
||||
AlwaysPullImages.
|
||||
--enable-admission-plugins=...,AlwaysPullImages,...
|
||||
scored: false
|
||||
|
||||
- id: 1.2.13
|
||||
text: "Ensure that the admission control plugin SecurityContextDeny is set if PodSecurityPolicy is not used (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'enable-admission-plugins'"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "SecurityContextDeny"
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "PodSecurityPolicy"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to include
|
||||
SecurityContextDeny, unless PodSecurityPolicy is already in place.
|
||||
--enable-admission-plugins=...,SecurityContextDeny,...
|
||||
scored: false
|
||||
|
||||
- id: 1.2.14
|
||||
text: "Ensure that the admission control plugin ServiceAccount is set (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "ServiceAccount"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and create ServiceAccount objects as per your environment.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and ensure that the --disable-admission-plugins parameter is set to a
|
||||
value that does not include ServiceAccount.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.15
|
||||
text: "Ensure that the admission control plugin NamespaceLifecycle is set (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "NamespaceLifecycle"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --disable-admission-plugins parameter to
|
||||
ensure it does not include NamespaceLifecycle.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.16
|
||||
text: "Ensure that the admission control plugin NodeRestriction is set (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'enable-admission-plugins'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "NodeRestriction"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure NodeRestriction plug-in on kubelets.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to a
|
||||
value that includes NodeRestriction.
|
||||
--enable-admission-plugins=...,NodeRestriction,...
|
||||
scored: true
|
||||
|
||||
- id: 1.2.17
|
||||
text: "Ensure that the --secure-port argument is not set to 0 (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'secure-port'"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--secure-port"
|
||||
compare:
|
||||
op: gt
|
||||
value: 0
|
||||
- flag: "--secure-port"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and either remove the --secure-port parameter or
|
||||
set it to a different (non-zero) desired port.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.18
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'profiling'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.2.19
|
||||
text: "Ensure that the --audit-log-path argument is set (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep -v grep"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-path"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-path parameter to a suitable path and
|
||||
file where you would like audit logs to be written, for example,
|
||||
--audit-log-path=/var/log/apiserver/audit.log
|
||||
scored: true
|
||||
|
||||
- id: 1.2.20
|
||||
text: "Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep -v grep"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxage"
|
||||
compare:
|
||||
op: gte
|
||||
value: 30
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxage parameter to 30
|
||||
or as an appropriate number of days, for example,
|
||||
--audit-log-maxage=30
|
||||
scored: true
|
||||
|
||||
- id: 1.2.21
|
||||
text: "Ensure that the --audit-log-maxbackup argument is set to 10 or as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep -v grep"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxbackup"
|
||||
compare:
|
||||
op: gte
|
||||
value: 10
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxbackup parameter to 10 or to an appropriate
|
||||
value. For example,
|
||||
--audit-log-maxbackup=10
|
||||
scored: true
|
||||
|
||||
- id: 1.2.22
|
||||
text: "Ensure that the --audit-log-maxsize argument is set to 100 or as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep -v grep"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxsize"
|
||||
compare:
|
||||
op: gte
|
||||
value: 100
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxsize parameter to an appropriate size in MB.
|
||||
For example, to set it as 100 MB, --audit-log-maxsize=100
|
||||
scored: true
|
||||
|
||||
- id: 1.2.23
|
||||
text: "Ensure that the --request-timeout argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep -v grep"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--request-timeout"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
and set the below parameter as appropriate and if needed.
|
||||
For example, --request-timeout=300s
|
||||
scored: true
|
||||
|
||||
- id: 1.2.24
|
||||
text: "Ensure that the --service-account-lookup argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--service-account-lookup"
|
||||
set: false
|
||||
- flag: "--service-account-lookup"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--service-account-lookup=true
|
||||
Alternatively, you can delete the --service-account-lookup parameter from this file so
|
||||
that the default takes effect.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.25
|
||||
text: "Ensure that the --service-account-key-file argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep -v grep"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-key-file"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --service-account-key-file parameter
|
||||
to the public key file for service accounts. For example,
|
||||
--service-account-key-file=<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.26
|
||||
text: "Ensure that the --etcd-certfile and --etcd-keyfile arguments are set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep -m1 'Running kube-apiserver'"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--etcd-certfile"
|
||||
set: true
|
||||
- flag: "--etcd-keyfile"
|
||||
set: true
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the etcd certificate and key file parameters.
|
||||
--etcd-certfile=<path/to/client-certificate-file>
|
||||
--etcd-keyfile=<path/to/client-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.27
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep -A1 'Running kube-apiserver' | tail -n2"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--tls-cert-file"
|
||||
set: true
|
||||
- flag: "--tls-private-key-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the TLS certificate and private key file parameters.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.28
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'client-ca-file'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--client-ca-file"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the client certificate authority file.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.29
|
||||
text: "Ensure that the --etcd-cafile argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'etcd-cafile'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--etcd-cafile"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the etcd certificate authority file parameter.
|
||||
--etcd-cafile=<path/to/ca-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.30
|
||||
text: "Ensure that the --encryption-provider-config argument is set as appropriate (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'encryption-provider-config'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--encryption-provider-config"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --encryption-provider-config parameter to the path of that file.
|
||||
For example, --encryption-provider-config=</path/to/EncryptionConfig/File>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.31
|
||||
text: "Ensure that encryption providers are appropriately configured (Manual)"
|
||||
audit: "grep aescbc /path/to/encryption-config.json"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
||||
In this file, choose aescbc, kms or secretbox as the encryption provider.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.32
|
||||
text: "Ensure that the API Server only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'tls-cipher-suites'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--tls-cipher-suites"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384"
|
||||
remediation: |
|
||||
Edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml
|
||||
on the control plane node and set the below parameter.
|
||||
--tls-cipher-suites=TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
|
||||
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
|
||||
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
|
||||
TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
|
||||
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
|
||||
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,
|
||||
TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384
|
||||
scored: false
|
||||
|
||||
- id: 1.3
|
||||
text: "Controller Manager"
|
||||
checks:
|
||||
- id: 1.3.1
|
||||
text: "Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1 | grep 'terminated-pod-gc-threshold'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--terminated-pod-gc-threshold"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --terminated-pod-gc-threshold to an appropriate threshold,
|
||||
for example, --terminated-pod-gc-threshold=10
|
||||
scored: false
|
||||
|
||||
- id: 1.3.2
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1 | grep 'profiling'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.3.3
|
||||
text: "Ensure that the --use-service-account-credentials argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1 | grep 'use-service-account-credentials'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--use-service-account-credentials"
|
||||
compare:
|
||||
op: noteq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node to set the below parameter.
|
||||
--use-service-account-credentials=true
|
||||
scored: true
|
||||
|
||||
- id: 1.3.4
|
||||
text: "Ensure that the --service-account-private-key-file argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1 | grep 'service-account-private-key-file'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-private-key-file"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --service-account-private-key-file parameter
|
||||
to the private key file for service accounts.
|
||||
--service-account-private-key-file=<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.3.5
|
||||
text: "Ensure that the --root-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1 | grep 'root-ca-file'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--root-ca-file"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --root-ca-file parameter to the certificate bundle file`.
|
||||
--root-ca-file=<path/to/file>
|
||||
scored: true
|
||||
|
||||
- id: 1.3.6
|
||||
text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1 | grep 'RotateKubeletServerCertificate'"
|
||||
type: "skip"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--feature-gates"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "RotateKubeletServerCertificate=false"
|
||||
set: true
|
||||
- flag: "--feature-gates"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --feature-gates parameter to include RotateKubeletServerCertificate=true.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
scored: true
|
||||
|
||||
- id: 1.3.7
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
set: true
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and ensure the correct value for the --bind-address parameter
|
||||
scored: true
|
||||
|
||||
- id: 1.4
|
||||
text: "Scheduler"
|
||||
checks:
|
||||
- id: 1.4.1
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-scheduler' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
set: true
|
||||
remediation: |
|
||||
Edit the Scheduler pod specification file $schedulerconf file
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.4.2
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-scheduler' | tail -n1 | grep 'bind-address'"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
set: true
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Scheduler pod specification file $schedulerconf
|
||||
on the control plane node and ensure the correct value for the --bind-address parameter
|
||||
scored: true
|
||||
490
cfg/k3s-cis-1.23/node.yaml
Normal file
490
cfg/k3s-cis-1.23/node.yaml
Normal file
@@ -0,0 +1,490 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.23"
|
||||
id: 4
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the kubelet service file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c permissions=%a $kubeletsvc; fi'' '
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chmod 644 $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
text: "If proxy kubeconfig file exists ensure permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: 'stat -c %a /var/lib/rancher/k3s/agent/kubeproxy.kubeconfig'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
set: true
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 644 $proxykubeconfig
|
||||
scored: false
|
||||
|
||||
- id: 4.1.4
|
||||
text: "If proxy kubeconfig file exists ensure ownership is set to root:root (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e /var/lib/rancher/k3s/agent/kubeproxy.kubeconfig; then stat -c %U:%G /var/lib/rancher/k3s/agent/kubeproxy.kubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
scored: false
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: 'stat -c %a /var/lib/rancher/k3s/agent/kubelet.kubeconfig '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "644"
|
||||
compare:
|
||||
op: eq
|
||||
value: "644"
|
||||
set: true
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 644 $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Automated)"
|
||||
audit: 'stat -c %U:%G /var/lib/rancher/k3s/agent/kubelet.kubeconfig'
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
compare:
|
||||
op: eq
|
||||
value: "root:root"
|
||||
set: true
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: "stat -c %a /var/lib/rancher/k3s/server/tls/server-ca.crt"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "644"
|
||||
compare:
|
||||
op: eq
|
||||
value: "644"
|
||||
set: true
|
||||
- flag: "640"
|
||||
compare:
|
||||
op: eq
|
||||
value: "640"
|
||||
set: true
|
||||
- flag: "600"
|
||||
compare:
|
||||
op: eq
|
||||
value: "600"
|
||||
set: true
|
||||
- flag: "444"
|
||||
compare:
|
||||
op: eq
|
||||
value: "444"
|
||||
set: true
|
||||
- flag: "440"
|
||||
compare:
|
||||
op: eq
|
||||
value: "440"
|
||||
set: true
|
||||
- flag: "400"
|
||||
compare:
|
||||
op: eq
|
||||
value: "400"
|
||||
set: true
|
||||
- flag: "000"
|
||||
compare:
|
||||
op: eq
|
||||
value: "000"
|
||||
set: true
|
||||
bin_op: or
|
||||
remediation: |
|
||||
Run the following command to modify the file permissions of the
|
||||
--client-ca-file chmod 644 <filename>
|
||||
scored: true
|
||||
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Manual)"
|
||||
audit: "stat -c %U:%G /var/lib/rancher/k3s/server/tls/client-ca.crt"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the following command to modify the ownership of the --client-ca-file.
|
||||
chown root:root <filename>
|
||||
scored: false
|
||||
|
||||
- id: 4.1.9
|
||||
text: "Ensure that the kubelet --config configuration file has permissions set to 644 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c permissions=%a $kubeletconf; fi'' '
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chmod 644 $kubeletconf
|
||||
scored: true
|
||||
|
||||
- id: 4.1.10
|
||||
text: "Ensure that the kubelet --config configuration file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi'' '
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chown root:root $kubeletconf
|
||||
scored: true
|
||||
|
||||
- id: 4.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: '/bin/sh -c ''if test $(journalctl -m -u k3s | grep "Running kube-apiserver" | wc -l) -gt 0; then journalctl -m -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "anonymous-auth" | grep -v grep; else echo "--anonymous-auth=false"; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: '{.authentication.anonymous.enabled}'
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication: anonymous: enabled` to
|
||||
`false`.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
`--anonymous-auth=false`
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: '/bin/sh -c ''if test $(journalctl -m -u k3s | grep "Running kube-apiserver" | wc -l) -gt 0; then journalctl -m -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "authorization-mode" | grep -v grep; else echo "--authorization-mode=Webhook"; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: '{.authorization.mode}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authorization.mode` to Webhook. If
|
||||
using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--authorization-mode=Webhook
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: '/bin/sh -c ''if test $(journalctl -m -u k3s | grep "Running kube-apiserver" | wc -l) -gt 0; then journalctl -m -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "client-ca-file" | grep -v grep; else echo "--client-ca-file=/var/lib/rancher/k3s/server/tls/request-header-ca.crt"; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: '{.authentication.x509.clientCAFile}'
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication.x509.clientCAFile` to
|
||||
the location of the client CA file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.4
|
||||
text: "Ensure that the --read-only-port argument is set to 0 (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kubelet' | tail -n1 | grep 'read-only-port' "
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
set: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `readOnlyPort` to 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--read-only-port=0
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kubelet' | tail -n1 | grep 'streaming-connection-idle-timeout'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `streamingConnectionIdleTimeout` to a
|
||||
value other than 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--streaming-connection-idle-timeout=5m
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.6
|
||||
text: "Ensure that the --protect-kernel-defaults argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kubelet' | tail -n1 | grep 'protect-kernel-defaults'"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --protect-kernel-defaults
|
||||
path: '{.protectKernelDefaults}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `protectKernelDefaults` to `true`.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--protect-kernel-defaults=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.7
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kubelet' | tail -n1 | grep 'make-iptables-util-chains'"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `makeIPTablesUtilChains` to `true`.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove the --make-iptables-util-chains argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.8
|
||||
text: "Ensure that the --hostname-override argument is not set (Manual)"
|
||||
# This is one of those properties that can only be set as a command line argument.
|
||||
# To check if the property is set as expected, we need to parse the kubelet command
|
||||
# instead reading the Kubelet Configuration file.
|
||||
audit: "/bin/ps -fC $kubeletbin "
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --hostname-override
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and remove the --hostname-override argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.9
|
||||
text: "Ensure that the --event-qps argument is set to 0 or a level which ensures appropriate event capture (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
type: "manual"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `eventRecordQPS` to an appropriate level.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.10
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cert-file
|
||||
path: '/var/lib/rancher/k3s/agent/serving-kubelet.crt'
|
||||
- flag: --tls-private-key-file
|
||||
path: '/var/lib/rancher/k3s/agent/serving-kubelet.key'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCertFile` to the location
|
||||
of the certificate file to use to identify this Kubelet, and `tlsPrivateKeyFile`
|
||||
to the location of the corresponding private key file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameters in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.11
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to add the line `rotateCertificates` to `true` or
|
||||
remove it altogether to use the default value.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove --rotate-certificates=false argument from the KUBELET_CERTIFICATE_ARGS
|
||||
variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.12
|
||||
text: "Verify that the RotateKubeletServerCertificate argument is set to true (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
type: "skip"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: false
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and set the below parameter in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.13
|
||||
text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
type: "manual"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cipher-suites
|
||||
path: '{range .tlsCipherSuites[:]}{}{'',''}{end}'
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCipherSuites` to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the --tls-cipher-suites parameter as follows, or to a subset of these values.
|
||||
--tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
269
cfg/k3s-cis-1.23/policies.yaml
Normal file
269
cfg/k3s-cis-1.23/policies.yaml
Normal file
@@ -0,0 +1,269 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.23"
|
||||
id: 5
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role :
|
||||
kubectl delete clusterrolebinding [name]
|
||||
scored: false
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize access to secrets (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to Secret objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Minimize access to create pods (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to pod objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.5
|
||||
text: "Ensure that default service accounts are not actively used. (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
||||
to the Kubernetes API server.
|
||||
Modify the configuration of each default service account to include this value
|
||||
automountServiceAccountToken: false
|
||||
scored: false
|
||||
|
||||
- id: 5.1.6
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Modify the definition of pods and service accounts which do not need to mount service
|
||||
account tokens to disable it.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.7
|
||||
text: "Avoid use of system:masters group (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.8
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Pod Security Standards"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Ensure that the cluster has at least one active policy control mechanism in place (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that either Pod Security Admission or an external policy control system is in place
|
||||
for every namespace which contains user workloads.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.2
|
||||
text: "Minimize the admission of privileged containers (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of privileged containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostPID` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostIPC` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.5
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostNetwork` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.6
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `.spec.allowPrivilegeEscalation` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.7
|
||||
text: "Minimize the admission of root containers (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a policy for each namespace in the cluster, ensuring that either `MustRunAsNonRoot`
|
||||
or `MustRunAs` with the range of UIDs not including 0, is set.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.8
|
||||
text: "Minimize the admission of containers with the NET_RAW capability (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with the `NET_RAW` capability.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.9
|
||||
text: "Minimize the admission of containers with added capabilities (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that `allowedCapabilities` is not present in policies for the cluster unless
|
||||
it is set to an empty array.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.10
|
||||
text: "Minimize the admission of containers with capabilities assigned (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the use of capabilites in applications running on your cluster. Where a namespace
|
||||
contains applicaions which do not require any Linux capabities to operate consider adding
|
||||
a PSP which forbids the admission of containers which do not drop all capabilities.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.11
|
||||
text: "Minimize the admission of Windows HostProcess containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers that have `.securityContext.windowsOptions.hostProcess` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.12
|
||||
text: "Minimize the admission of HostPath volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `hostPath` volumes.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.13
|
||||
text: "Minimize the admission of containers which use HostPorts (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers which use `hostPort` sections.
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "Network Policies and CNI"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure that the CNI in use supports NetworkPolicies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If the CNI plugin in use does not support network policies, consideration should be given to
|
||||
making use of a different plugin, or finding an alternate mechanism for restricting traffic
|
||||
in the Kubernetes cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.3.2
|
||||
text: "Ensure that all Namespaces have NetworkPolicies defined (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Prefer using Secrets as files over Secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If possible, rewrite application code to read Secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 5.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the Secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 5.5
|
||||
text: "Extensible Admission Control"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup image provenance.
|
||||
scored: false
|
||||
|
||||
- id: 5.7
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 5.7.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.2
|
||||
text: "Ensure that the seccomp profile is set to docker/default in your Pod definitions (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Use `securityContext` to enable the docker/default seccomp profile in your pod definitions.
|
||||
An example is as below:
|
||||
securityContext:
|
||||
seccompProfile:
|
||||
type: RuntimeDefault
|
||||
scored: false
|
||||
|
||||
- id: 5.7.3
|
||||
text: "Apply SecurityContext to your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply SecurityContexts to your Pods. For a
|
||||
suggested list of SecurityContexts, you may refer to the CIS Security Benchmark for Docker
|
||||
Containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.4
|
||||
text: "The default namespace should not be used (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
scored: false
|
||||
58
cfg/k3s-cis-1.24/config.yaml
Normal file
58
cfg/k3s-cis-1.24/config.yaml
Normal file
@@ -0,0 +1,58 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
|
||||
master:
|
||||
components:
|
||||
- apiserver
|
||||
- scheduler
|
||||
- controllermanager
|
||||
- etcd
|
||||
- policies
|
||||
|
||||
apiserver:
|
||||
bins:
|
||||
- containerd
|
||||
|
||||
scheduler:
|
||||
bins:
|
||||
- containerd
|
||||
kubeconfig:
|
||||
- /var/lib/rancher/k3s/server/cred/scheduler.kubeconfig
|
||||
|
||||
controllermanager:
|
||||
bins:
|
||||
- containerd
|
||||
kubeconfig:
|
||||
- /var/lib/rancher/k3s/server/cred/controller.kubeconfig
|
||||
|
||||
|
||||
etcd:
|
||||
bins:
|
||||
- containerd
|
||||
|
||||
etcd:
|
||||
components:
|
||||
- etcd
|
||||
|
||||
etcd:
|
||||
confs: /var/lib/rancher/k3s/server/db/etcd/config
|
||||
|
||||
node:
|
||||
components:
|
||||
- kubelet
|
||||
- proxy
|
||||
|
||||
kubelet:
|
||||
bins:
|
||||
- containerd
|
||||
defaultkubeconfig: /var/lib/rancher/k3s/agent/kubelet.kubeconfig
|
||||
defaultcafile: /var/lib/rancher/k3s/agent/client-ca.crt
|
||||
|
||||
proxy:
|
||||
bins:
|
||||
- containerd
|
||||
defaultkubeconfig: /var/lib/rancher/k3s/agent/kubeproxy.kubeconfig
|
||||
|
||||
policies:
|
||||
components:
|
||||
- policies
|
||||
46
cfg/k3s-cis-1.24/controlplane.yaml
Normal file
46
cfg/k3s-cis-1.24/controlplane.yaml
Normal file
@@ -0,0 +1,46 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.24"
|
||||
id: 3
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Client certificate authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be
|
||||
implemented in place of client certificates.
|
||||
scored: false
|
||||
|
||||
- id: 3.2
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that a minimal audit policy is created (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'audit-policy-file'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-policy-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Create an audit policy file for your cluster.
|
||||
scored: false
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the audit policy covers key security concerns (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the audit policy provided for the cluster and ensure that it covers
|
||||
at least the following areas,
|
||||
- Access to Secrets managed by the cluster. Care should be taken to only
|
||||
log Metadata for requests to Secrets, ConfigMaps, and TokenReviews, in
|
||||
order to avoid risk of logging sensitive data.
|
||||
- Modification of Pod and Deployment objects.
|
||||
- Use of `pods/exec`, `pods/portforward`, `pods/proxy` and `services/proxy`.
|
||||
For most requests, minimally logging at the Metadata level is recommended
|
||||
(the most basic level of logging).
|
||||
scored: false
|
||||
144
cfg/k3s-cis-1.24/etcd.yaml
Normal file
144
cfg/k3s-cis-1.24/etcd.yaml
Normal file
@@ -0,0 +1,144 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.24"
|
||||
id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
type: "etcd"
|
||||
groups:
|
||||
- id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
checks:
|
||||
- id: 2.1
|
||||
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- path: "{.client-transport-security.cert-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/server-client.crt"
|
||||
- path: "{.client-transport-security.key-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/server-client.key"
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s generates cert and key files for etcd.
|
||||
These are located in /var/lib/rancher/k3s/server/tls/etcd/.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to use custom cert and key files.
|
||||
scored: false
|
||||
|
||||
- id: 2.2
|
||||
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.client-transport-security.client-cert-auth}"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s sets the --client-cert-auth parameter to true.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to disable client certificate authentication.
|
||||
scored: false
|
||||
|
||||
- id: 2.3
|
||||
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- path: "{.client-transport-security.auto-tls}"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
- path: "{.client-transport-security.auto-tls}"
|
||||
set: false
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s does not set the --auto-tls parameter.
|
||||
If this check fails, edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --auto-tls parameter or set it to false.
|
||||
client-transport-security:
|
||||
auto-tls: false
|
||||
scored: false
|
||||
|
||||
- id: 2.4
|
||||
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are set as appropriate (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- path: "{.peer-transport-security.cert-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/peer-server-client.crt"
|
||||
- path: "{.peer-transport-security.key-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/peer-server-client.key"
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s generates peer cert and key files for etcd.
|
||||
These are located in /var/lib/rancher/k3s/server/tls/etcd/.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to use custom peer cert and key files.
|
||||
scored: false
|
||||
|
||||
- id: 2.5
|
||||
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.peer-transport-security.client-cert-auth}"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s sets the --peer-cert-auth parameter to true.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to disable peer client certificate authentication.
|
||||
scored: false
|
||||
|
||||
- id: 2.6
|
||||
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- path: "{.peer-transport-security.auto-tls}"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
- path: "{.peer-transport-security.auto-tls}"
|
||||
set: false
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s does not set the --peer-auto-tls parameter.
|
||||
If this check fails, edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --peer-auto-tls parameter or set it to false.
|
||||
peer-transport-security:
|
||||
auto-tls: false
|
||||
scored: false
|
||||
|
||||
- id: 2.7
|
||||
text: "Ensure that a unique Certificate Authority is used for etcd (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.peer-transport-security.trusted-ca-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/peer-ca.crt"
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s generates a unique certificate authority for etcd.
|
||||
This is located at /var/lib/rancher/k3s/server/tls/etcd/peer-ca.crt.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to use a shared certificate authority.
|
||||
scored: false
|
||||
1021
cfg/k3s-cis-1.24/master.yaml
Normal file
1021
cfg/k3s-cis-1.24/master.yaml
Normal file
File diff suppressed because it is too large
Load Diff
427
cfg/k3s-cis-1.24/node.yaml
Normal file
427
cfg/k3s-cis-1.24/node.yaml
Normal file
@@ -0,0 +1,427 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.24"
|
||||
id: 4
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the kubelet service file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c permissions=%a $kubeletsvc; fi'' '
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
The kubelet is embedded in the k3s process. There is no kubelet service file, all configuration is passed in as arguments at runtime.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
The kubelet is embedded in the k3s process. There is no kubelet service file, all configuration is passed in as arguments at runtime.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
text: "If proxy kubeconfig file exists ensure permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c permissions=%a $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
set: true
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.4
|
||||
text: "If proxy kubeconfig file exists ensure ownership is set to root:root (Automated)"
|
||||
audit: 'stat -c %U:%G $proxykubeconfig'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c permissions=%a $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Automated)"
|
||||
audit: 'stat -c %U:%G $kubeletkubeconfig'
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
compare:
|
||||
op: eq
|
||||
value: "root:root"
|
||||
set: true
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "stat -c permissions=%a $kubeletcafile"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
set: true
|
||||
remediation: |
|
||||
Run the following command to modify the file permissions of the
|
||||
--client-ca-file chmod 600 $kubeletcafile
|
||||
scored: true
|
||||
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Automated)"
|
||||
audit: "stat -c %U:%G $kubeletcafile"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
compare:
|
||||
op: eq
|
||||
value: root:root
|
||||
remediation: |
|
||||
Run the following command to modify the ownership of the --client-ca-file.
|
||||
chown root:root $kubeletcafile
|
||||
scored: true
|
||||
|
||||
- id: 4.1.9
|
||||
text: "If the kubelet config.yaml configuration file is being used validate permissions set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c permissions=%a $kubeletconf; fi'' '
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
The kubelet is embedded in the k3s process. There is no kubelet config file, all configuration is passed in as arguments at runtime.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.10
|
||||
text: "If the kubelet config.yaml configuration file is being used validate file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi'' '
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
The kubelet is embedded in the k3s process. There is no kubelet config file, all configuration is passed in as arguments at runtime.
|
||||
scored: true
|
||||
|
||||
- id: 4.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: '/bin/sh -c ''if test $(journalctl -m -u k3s | grep "Running kube-apiserver" | wc -l) -gt 0; then journalctl -m -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "anonymous-auth" | grep -v grep; else echo "--anonymous-auth=false"; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: '{.authentication.anonymous.enabled}'
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
set: true
|
||||
remediation: |
|
||||
By default, K3s sets the --anonymous-auth to false. If you have set this to a different value, you
|
||||
should set it back to false. If using the K3s config file /etc/rancher/k3s/config.yaml, remove any lines similar to below.
|
||||
kubelet-arg:
|
||||
- "anonymous-auth=true"
|
||||
If using the command line, edit the K3s service file and remove the below argument.
|
||||
--kubelet-arg="anonymous-auth=true"
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: '/bin/sh -c ''if test $(journalctl -m -u k3s | grep "Running kube-apiserver" | wc -l) -gt 0; then journalctl -m -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "authorization-mode"; else echo "--authorization-mode=Webhook"; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: '{.authorization.mode}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
set: true
|
||||
remediation: |
|
||||
By default, K3s does not set the --authorization-mode to AlwaysAllow.
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, remove any lines similar to below.
|
||||
kubelet-arg:
|
||||
- "authorization-mode=AlwaysAllow"
|
||||
If using the command line, edit the K3s service file and remove the below argument.
|
||||
--kubelet-arg="authorization-mode=AlwaysAllow"
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: '/bin/sh -c ''if test $(journalctl -m -u k3s | grep "Running kube-apiserver" | wc -l) -gt 0; then journalctl -m -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "client-ca-file"; else echo "--client-ca-file=/var/lib/rancher/k3s/server/tls/request-header-ca.crt"; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: '{.authentication.x509.clientCAFile}'
|
||||
set: true
|
||||
remediation: |
|
||||
By default, K3s automatically provides the client ca certificate for the Kubelet.
|
||||
It is generated and located at /var/lib/rancher/k3s/agent/client-ca.crt
|
||||
scored: true
|
||||
|
||||
- id: 4.2.4
|
||||
text: "Verify that the --read-only-port argument is set to 0 (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s sets the --read-only-port to 0. If you have set this to a different value, you
|
||||
should set it back to 0. If using the K3s config file /etc/rancher/k3s/config.yaml, remove any lines similar to below.
|
||||
kubelet-arg:
|
||||
- "read-only-port=XXXX"
|
||||
If using the command line, edit the K3s service file and remove the below argument.
|
||||
--kubelet-arg="read-only-port=XXXX"
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Manual)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, set the following parameter to an appropriate value.
|
||||
kubelet-arg:
|
||||
- "streaming-connection-idle-timeout=5m"
|
||||
If using the command line, run K3s with --kubelet-arg="streaming-connection-idle-timeout=5m".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.6
|
||||
text: "Ensure that the --protect-kernel-defaults argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --protect-kernel-defaults
|
||||
path: '{.protectKernelDefaults}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
remediation: |
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, set the following parameter.
|
||||
protect-kernel-defaults: true
|
||||
If using the command line, run K3s with --protect-kernel-defaults=true.
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.7
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, set the following parameter.
|
||||
kubelet-arg:
|
||||
- "make-iptables-util-chains=true"
|
||||
If using the command line, run K3s with --kubelet-arg="make-iptables-util-chains=true".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.8
|
||||
text: "Ensure that the --hostname-override argument is not set (Automated)"
|
||||
type: "skip"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --hostname-override
|
||||
set: false
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
By default, K3s does set the --hostname-override argument. Per CIS guidelines, this is to comply
|
||||
with cloud providers that require this flag to ensure that hostname matches node names.
|
||||
scored: true
|
||||
|
||||
- id: 4.2.9
|
||||
text: "Ensure that the eventRecordQPS argument is set to a level which ensures appropriate event capture (Manual)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
remediation: |
|
||||
By default, K3s sets the event-qps to 0. Should you wish to change this,
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, set the following parameter to an appropriate value.
|
||||
kubelet-arg:
|
||||
- "event-qps=<value>"
|
||||
If using the command line, run K3s with --kubelet-arg="event-qps=<value>".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.10
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cert-file
|
||||
path: '/var/lib/rancher/k3s/agent/serving-kubelet.crt'
|
||||
- flag: --tls-private-key-file
|
||||
path: '/var/lib/rancher/k3s/agent/serving-kubelet.key'
|
||||
remediation: |
|
||||
By default, K3s automatically provides the TLS certificate and private key for the Kubelet.
|
||||
They are generated and located at /var/lib/rancher/k3s/agent/serving-kubelet.crt and /var/lib/rancher/k3s/agent/serving-kubelet.key
|
||||
If for some reason you need to provide your own certificate and key, you can set the
|
||||
below parameters in the K3s config file /etc/rancher/k3s/config.yaml.
|
||||
kubelet-arg:
|
||||
- "tls-cert-file=<path/to/tls-cert-file>"
|
||||
- "tls-private-key-file=<path/to/tls-private-key-file>"
|
||||
scored: true
|
||||
|
||||
- id: 4.2.11
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
By default, K3s does not set the --rotate-certificates argument. If you have set this flag with a value of `false`, you should either set it to `true` or completely remove the flag.
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, remove any rotate-certificates parameter.
|
||||
If using the command line, remove the K3s flag --kubelet-arg="rotate-certificates".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.12
|
||||
text: "Verify that the RotateKubeletServerCertificate argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: false
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s does not set the RotateKubeletServerCertificate feature gate.
|
||||
If you have enabled this feature gate, you should remove it.
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, remove any feature-gate=RotateKubeletServerCertificate parameter.
|
||||
If using the command line, remove the K3s flag --kubelet-arg="feature-gate=RotateKubeletServerCertificate".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.13
|
||||
text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cipher-suites
|
||||
path: '{range .tlsCipherSuites[:]}{}{'',''}{end}'
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a K3s config file /etc/rancher/k3s/config.yaml, edit the file to set `tlsCipherSuites` to
|
||||
kubelet-arg:
|
||||
- "tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305"
|
||||
or to a subset of these values.
|
||||
If using the command line, add the K3s flag --kubelet-arg="tls-cipher-suites=<same values as above>"
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: false
|
||||
269
cfg/k3s-cis-1.24/policies.yaml
Normal file
269
cfg/k3s-cis-1.24/policies.yaml
Normal file
@@ -0,0 +1,269 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.24"
|
||||
id: 5
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role :
|
||||
kubectl delete clusterrolebinding [name]
|
||||
scored: false
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize access to secrets (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to Secret objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Minimize access to create pods (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to pod objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.5
|
||||
text: "Ensure that default service accounts are not actively used. (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
||||
to the Kubernetes API server.
|
||||
Modify the configuration of each default service account to include this value
|
||||
automountServiceAccountToken: false
|
||||
scored: false
|
||||
|
||||
- id: 5.1.6
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Modify the definition of pods and service accounts which do not need to mount service
|
||||
account tokens to disable it.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.7
|
||||
text: "Avoid use of system:masters group (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.8
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Pod Security Standards"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Ensure that the cluster has at least one active policy control mechanism in place (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that either Pod Security Admission or an external policy control system is in place
|
||||
for every namespace which contains user workloads.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.2
|
||||
text: "Minimize the admission of privileged containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of privileged containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostPID` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostIPC` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.5
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostNetwork` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.6
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `.spec.allowPrivilegeEscalation` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.7
|
||||
text: "Minimize the admission of root containers (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a policy for each namespace in the cluster, ensuring that either `MustRunAsNonRoot`
|
||||
or `MustRunAs` with the range of UIDs not including 0, is set.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.8
|
||||
text: "Minimize the admission of containers with the NET_RAW capability (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with the `NET_RAW` capability.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.9
|
||||
text: "Minimize the admission of containers with added capabilities (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that `allowedCapabilities` is not present in policies for the cluster unless
|
||||
it is set to an empty array.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.10
|
||||
text: "Minimize the admission of containers with capabilities assigned (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the use of capabilities in applications running on your cluster. Where a namespace
|
||||
contains applications which do not require any Linux capabities to operate consider adding
|
||||
a PSP which forbids the admission of containers which do not drop all capabilities.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.11
|
||||
text: "Minimize the admission of Windows HostProcess containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers that have `.securityContext.windowsOptions.hostProcess` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.12
|
||||
text: "Minimize the admission of HostPath volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `hostPath` volumes.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.13
|
||||
text: "Minimize the admission of containers which use HostPorts (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers which use `hostPort` sections.
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "Network Policies and CNI"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure that the CNI in use supports NetworkPolicies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If the CNI plugin in use does not support network policies, consideration should be given to
|
||||
making use of a different plugin, or finding an alternate mechanism for restricting traffic
|
||||
in the Kubernetes cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.3.2
|
||||
text: "Ensure that all Namespaces have NetworkPolicies defined (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Prefer using Secrets as files over Secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If possible, rewrite application code to read Secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 5.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the Secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 5.5
|
||||
text: "Extensible Admission Control"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup image provenance.
|
||||
scored: false
|
||||
|
||||
- id: 5.7
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 5.7.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.2
|
||||
text: "Ensure that the seccomp profile is set to docker/default in your Pod definitions (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Use `securityContext` to enable the docker/default seccomp profile in your pod definitions.
|
||||
An example is as below:
|
||||
securityContext:
|
||||
seccompProfile:
|
||||
type: RuntimeDefault
|
||||
scored: false
|
||||
|
||||
- id: 5.7.3
|
||||
text: "Apply SecurityContext to your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply SecurityContexts to your Pods. For a
|
||||
suggested list of SecurityContexts, you may refer to the CIS Security Benchmark for Docker
|
||||
Containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.4
|
||||
text: "The default namespace should not be used (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
scored: false
|
||||
64
cfg/k3s-cis-1.7/config.yaml
Normal file
64
cfg/k3s-cis-1.7/config.yaml
Normal file
@@ -0,0 +1,64 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
|
||||
master:
|
||||
components:
|
||||
- apiserver
|
||||
- kubelet
|
||||
- scheduler
|
||||
- controllermanager
|
||||
- etcd
|
||||
- policies
|
||||
|
||||
apiserver:
|
||||
bins:
|
||||
- containerd
|
||||
|
||||
kubelet:
|
||||
bins:
|
||||
- containerd
|
||||
defaultkubeconfig: /var/lib/rancher/k3s/agent/kubelet.kubeconfig
|
||||
defaultcafile: /var/lib/rancher/k3s/agent/client-ca.crt
|
||||
|
||||
scheduler:
|
||||
bins:
|
||||
- containerd
|
||||
kubeconfig:
|
||||
- /var/lib/rancher/k3s/server/cred/scheduler.kubeconfig
|
||||
|
||||
controllermanager:
|
||||
bins:
|
||||
- containerd
|
||||
kubeconfig:
|
||||
- /var/lib/rancher/k3s/server/cred/controller.kubeconfig
|
||||
|
||||
etcd:
|
||||
bins:
|
||||
- containerd
|
||||
|
||||
etcd:
|
||||
components:
|
||||
- etcd
|
||||
|
||||
etcd:
|
||||
confs: /var/lib/rancher/k3s/server/db/etcd/config
|
||||
|
||||
node:
|
||||
components:
|
||||
- kubelet
|
||||
- proxy
|
||||
|
||||
kubelet:
|
||||
bins:
|
||||
- containerd
|
||||
defaultkubeconfig: /var/lib/rancher/k3s/agent/kubelet.kubeconfig
|
||||
defaultcafile: /var/lib/rancher/k3s/agent/client-ca.crt
|
||||
|
||||
proxy:
|
||||
bins:
|
||||
- containerd
|
||||
defaultkubeconfig: /var/lib/rancher/k3s/agent/kubeproxy.kubeconfig
|
||||
|
||||
policies:
|
||||
components:
|
||||
- policies
|
||||
60
cfg/k3s-cis-1.7/controlplane.yaml
Normal file
60
cfg/k3s-cis-1.7/controlplane.yaml
Normal file
@@ -0,0 +1,60 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.7"
|
||||
id: 3
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Client certificate authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be
|
||||
implemented in place of client certificates.
|
||||
scored: false
|
||||
- id: 3.1.2
|
||||
text: "Service account token authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be implemented
|
||||
in place of service account tokens.
|
||||
scored: false
|
||||
- id: 3.1.3
|
||||
text: "Bootstrap token authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be implemented
|
||||
in place of bootstrap tokens.
|
||||
scored: false
|
||||
|
||||
- id: 3.2
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that a minimal audit policy is created (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'audit-policy-file'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-policy-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Create an audit policy file for your cluster.
|
||||
scored: false
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the audit policy covers key security concerns (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the audit policy provided for the cluster and ensure that it covers
|
||||
at least the following areas,
|
||||
- Access to Secrets managed by the cluster. Care should be taken to only
|
||||
log Metadata for requests to Secrets, ConfigMaps, and TokenReviews, in
|
||||
order to avoid risk of logging sensitive data.
|
||||
- Modification of Pod and Deployment objects.
|
||||
- Use of `pods/exec`, `pods/portforward`, `pods/proxy` and `services/proxy`.
|
||||
For most requests, minimally logging at the Metadata level is recommended
|
||||
(the most basic level of logging).
|
||||
scored: false
|
||||
144
cfg/k3s-cis-1.7/etcd.yaml
Normal file
144
cfg/k3s-cis-1.7/etcd.yaml
Normal file
@@ -0,0 +1,144 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.7"
|
||||
id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
type: "etcd"
|
||||
groups:
|
||||
- id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
checks:
|
||||
- id: 2.1
|
||||
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- path: "{.client-transport-security.cert-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/server-client.crt"
|
||||
- path: "{.client-transport-security.key-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/server-client.key"
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s generates cert and key files for etcd.
|
||||
These are located in /var/lib/rancher/k3s/server/tls/etcd/.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to use custom cert and key files.
|
||||
scored: false
|
||||
|
||||
- id: 2.2
|
||||
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.client-transport-security.client-cert-auth}"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s sets the --client-cert-auth parameter to true.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to disable client certificate authentication.
|
||||
scored: false
|
||||
|
||||
- id: 2.3
|
||||
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- path: "{.client-transport-security.auto-tls}"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
- path: "{.client-transport-security.auto-tls}"
|
||||
set: false
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s does not set the --auto-tls parameter.
|
||||
If this check fails, edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --auto-tls parameter or set it to false.
|
||||
client-transport-security:
|
||||
auto-tls: false
|
||||
scored: false
|
||||
|
||||
- id: 2.4
|
||||
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are set as appropriate (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- path: "{.peer-transport-security.cert-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/peer-server-client.crt"
|
||||
- path: "{.peer-transport-security.key-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/peer-server-client.key"
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s generates peer cert and key files for etcd.
|
||||
These are located in /var/lib/rancher/k3s/server/tls/etcd/.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to use custom peer cert and key files.
|
||||
scored: false
|
||||
|
||||
- id: 2.5
|
||||
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.peer-transport-security.client-cert-auth}"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s sets the --peer-cert-auth parameter to true.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to disable peer client certificate authentication.
|
||||
scored: false
|
||||
|
||||
- id: 2.6
|
||||
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- path: "{.peer-transport-security.auto-tls}"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
- path: "{.peer-transport-security.auto-tls}"
|
||||
set: false
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s does not set the --peer-auto-tls parameter.
|
||||
If this check fails, edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --peer-auto-tls parameter or set it to false.
|
||||
peer-transport-security:
|
||||
auto-tls: false
|
||||
scored: false
|
||||
|
||||
- id: 2.7
|
||||
text: "Ensure that a unique Certificate Authority is used for etcd (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.peer-transport-security.trusted-ca-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/peer-ca.crt"
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s generates a unique certificate authority for etcd.
|
||||
This is located at /var/lib/rancher/k3s/server/tls/etcd/peer-ca.crt.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to use a shared certificate authority.
|
||||
scored: false
|
||||
1000
cfg/k3s-cis-1.7/master.yaml
Normal file
1000
cfg/k3s-cis-1.7/master.yaml
Normal file
File diff suppressed because it is too large
Load Diff
422
cfg/k3s-cis-1.7/node.yaml
Normal file
422
cfg/k3s-cis-1.7/node.yaml
Normal file
@@ -0,0 +1,422 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.7"
|
||||
id: 4
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the kubelet service file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c permissions=%a $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
The kubelet is embedded in the k3s process. There is no kubelet service file, all configuration is passed in as arguments at runtime.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
The kubelet is embedded in the k3s process. There is no kubelet service file, all configuration is passed in as arguments at runtime.
|
||||
Not Applicable.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
text: "If proxy kubeconfig file exists ensure permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c permissions=%a $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.4
|
||||
text: "If proxy kubeconfig file exists ensure ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c %U:%G $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c permissions=%a $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Automated)"
|
||||
audit: 'stat -c %U:%G $kubeletkubeconfig'
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "stat -c permissions=%a $kubeletcafile"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command to modify the file permissions of the
|
||||
--client-ca-file chmod 600 $kubeletcafile
|
||||
scored: true
|
||||
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Automated)"
|
||||
audit: "stat -c %U:%G $kubeletcafile"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
compare:
|
||||
op: eq
|
||||
value: root:root
|
||||
remediation: |
|
||||
Run the following command to modify the ownership of the --client-ca-file.
|
||||
chown root:root $kubeletcafile
|
||||
scored: true
|
||||
|
||||
- id: 4.1.9
|
||||
text: "Ensure that the kubelet --config configuration file has permissions set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c permissions=%a $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
The kubelet is embedded in the k3s process. There is no kubelet config file, all configuration is passed in as arguments at runtime.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.10
|
||||
text: "Ensure that the kubelet --config configuration file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
The kubelet is embedded in the k3s process. There is no kubelet config file, all configuration is passed in as arguments at runtime.
|
||||
scored: true
|
||||
|
||||
- id: 4.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: '/bin/sh -c ''if test $(journalctl -m -u k3s | grep "Running kube-apiserver" | wc -l) -gt 0; then journalctl -m -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "anonymous-auth" | grep -v grep; else echo "--anonymous-auth=false"; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: '{.authentication.anonymous.enabled}'
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
By default, K3s sets the --anonymous-auth to false. If you have set this to a different value, you
|
||||
should set it back to false. If using the K3s config file /etc/rancher/k3s/config.yaml, remove any lines similar to below.
|
||||
kubelet-arg:
|
||||
- "anonymous-auth=true"
|
||||
If using the command line, edit the K3s service file and remove the below argument.
|
||||
--kubelet-arg="anonymous-auth=true"
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: '/bin/sh -c ''if test $(journalctl -m -u k3s | grep "Running kube-apiserver" | wc -l) -gt 0; then journalctl -m -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "authorization-mode"; else echo "--authorization-mode=Webhook"; fi'' '
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: '{.authorization.mode}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
remediation: |
|
||||
By default, K3s does not set the --authorization-mode to AlwaysAllow.
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, remove any lines similar to below.
|
||||
kubelet-arg:
|
||||
- "authorization-mode=AlwaysAllow"
|
||||
If using the command line, edit the K3s service file and remove the below argument.
|
||||
--kubelet-arg="authorization-mode=AlwaysAllow"
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: '/bin/sh -c ''if test $(journalctl -m -u k3s | grep "Running kube-apiserver" | wc -l) -gt 0; then journalctl -m -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "client-ca-file"; else echo "--client-ca-file=/var/lib/rancher/k3s/server/tls/request-header-ca.crt"; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: '{.authentication.x509.clientCAFile}'
|
||||
remediation: |
|
||||
By default, K3s automatically provides the client ca certificate for the Kubelet.
|
||||
It is generated and located at /var/lib/rancher/k3s/agent/client-ca.crt
|
||||
scored: true
|
||||
|
||||
- id: 4.2.4
|
||||
text: "Verify that the --read-only-port argument is set to 0 (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s sets the --read-only-port to 0. If you have set this to a different value, you
|
||||
should set it back to 0. If using the K3s config file /etc/rancher/k3s/config.yaml, remove any lines similar to below.
|
||||
kubelet-arg:
|
||||
- "read-only-port=XXXX"
|
||||
If using the command line, edit the K3s service file and remove the below argument.
|
||||
--kubelet-arg="read-only-port=XXXX"
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Manual)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, set the following parameter to an appropriate value.
|
||||
kubelet-arg:
|
||||
- "streaming-connection-idle-timeout=5m"
|
||||
If using the command line, run K3s with --kubelet-arg="streaming-connection-idle-timeout=5m".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.6
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, set the following parameter.
|
||||
kubelet-arg:
|
||||
- "make-iptables-util-chains=true"
|
||||
If using the command line, run K3s with --kubelet-arg="make-iptables-util-chains=true".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.7
|
||||
text: "Ensure that the --hostname-override argument is not set (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --hostname-override
|
||||
set: false
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
By default, K3s does set the --hostname-override argument. Per CIS guidelines, this is to comply
|
||||
with cloud providers that require this flag to ensure that hostname matches node names.
|
||||
scored: true
|
||||
|
||||
- id: 4.2.8
|
||||
text: "Ensure that the eventRecordQPS argument is set to a level which ensures appropriate event capture (Manual)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
compare:
|
||||
op: gte
|
||||
value: 0
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
By default, K3s sets the event-qps to 0. Should you wish to change this,
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, set the following parameter to an appropriate value.
|
||||
kubelet-arg:
|
||||
- "event-qps=<value>"
|
||||
If using the command line, run K3s with --kubelet-arg="event-qps=<value>".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.9
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cert-file
|
||||
path: '/var/lib/rancher/k3s/agent/serving-kubelet.crt'
|
||||
- flag: --tls-private-key-file
|
||||
path: '/var/lib/rancher/k3s/agent/serving-kubelet.key'
|
||||
remediation: |
|
||||
By default, K3s automatically provides the TLS certificate and private key for the Kubelet.
|
||||
They are generated and located at /var/lib/rancher/k3s/agent/serving-kubelet.crt and /var/lib/rancher/k3s/agent/serving-kubelet.key
|
||||
If for some reason you need to provide your own certificate and key, you can set the
|
||||
the below parameters in the K3s config file /etc/rancher/k3s/config.yaml.
|
||||
kubelet-arg:
|
||||
- "tls-cert-file=<path/to/tls-cert-file>"
|
||||
- "tls-private-key-file=<path/to/tls-private-key-file>"
|
||||
scored: true
|
||||
|
||||
- id: 4.2.10
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
By default, K3s does not set the --rotate-certificates argument. If you have set this flag with a value of `false`, you should either set it to `true` or completely remove the flag.
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, remove any rotate-certificates parameter.
|
||||
If using the command line, remove the K3s flag --kubelet-arg="rotate-certificates".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.11
|
||||
text: "Verify that the RotateKubeletServerCertificate argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: false
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s does not set the RotateKubeletServerCertificate feature gate.
|
||||
If you have enabled this feature gate, you should remove it.
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, remove any feature-gate=RotateKubeletServerCertificate parameter.
|
||||
If using the command line, remove the K3s flag --kubelet-arg="feature-gate=RotateKubeletServerCertificate".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.12
|
||||
text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cipher-suites
|
||||
path: '{range .tlsCipherSuites[:]}{}{'',''}{end}'
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a K3s config file /etc/rancher/k3s/config.yaml, edit the file to set `tlsCipherSuites` to
|
||||
kubelet-arg:
|
||||
- "tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305"
|
||||
or to a subset of these values.
|
||||
If using the command line, add the K3s flag --kubelet-arg="tls-cipher-suites=<same values as above>"
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.13
|
||||
text: "Ensure that a limit is set on pod PIDs (Manual)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --pod-max-pids
|
||||
path: '{.podPidsLimit}'
|
||||
remediation: |
|
||||
Decide on an appropriate level for this parameter and set it,
|
||||
If using a K3s config file /etc/rancher/k3s/config.yaml, edit the file to set `podPidsLimit` to
|
||||
kubelet-arg:
|
||||
- "pod-max-pids=<value>"
|
||||
scored: false
|
||||
300
cfg/k3s-cis-1.7/policies.yaml
Normal file
300
cfg/k3s-cis-1.7/policies.yaml
Normal file
@@ -0,0 +1,300 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.7"
|
||||
id: 5
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role :
|
||||
kubectl delete clusterrolebinding [name]
|
||||
scored: false
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize access to secrets (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to Secret objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Minimize access to create pods (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to pod objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.5
|
||||
text: "Ensure that default service accounts are not actively used. (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
||||
to the Kubernetes API server.
|
||||
Modify the configuration of each default service account to include this value
|
||||
automountServiceAccountToken: false
|
||||
scored: false
|
||||
|
||||
|
||||
- id: 5.1.6
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Modify the definition of pods and service accounts which do not need to mount service
|
||||
account tokens to disable it.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.7
|
||||
text: "Avoid use of system:masters group (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.8
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.9
|
||||
text: "Minimize access to create persistent volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to PersistentVolume objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.10
|
||||
text: "Minimize access to the proxy sub-resource of nodes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the proxy sub-resource of node objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.11
|
||||
text: "Minimize access to the approval sub-resource of certificatesigningrequests objects (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the approval sub-resource of certificatesigningrequest objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.12
|
||||
text: "Minimize access to webhook configuration objects (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the validatingwebhookconfigurations or mutatingwebhookconfigurations objects
|
||||
scored: false
|
||||
|
||||
- id: 5.1.13
|
||||
text: "Minimize access to the service account token creation (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the token sub-resource of serviceaccount objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Pod Security Standards"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Ensure that the cluster has at least one active policy control mechanism in place (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that either Pod Security Admission or an external policy control system is in place
|
||||
for every namespace which contains user workloads.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.2
|
||||
text: "Minimize the admission of privileged containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of privileged containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Automated)"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostPID` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Automated)"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostIPC` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.5
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Automated)"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostNetwork` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.6
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `.spec.allowPrivilegeEscalation` set to `true`.
|
||||
scored: true
|
||||
|
||||
- id: 5.2.7
|
||||
text: "Minimize the admission of root containers (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a policy for each namespace in the cluster, ensuring that either `MustRunAsNonRoot`
|
||||
or `MustRunAs` with the range of UIDs not including 0, is set.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.8
|
||||
text: "Minimize the admission of containers with the NET_RAW capability (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with the `NET_RAW` capability.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.9
|
||||
text: "Minimize the admission of containers with added capabilities (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that `allowedCapabilities` is not present in policies for the cluster unless
|
||||
it is set to an empty array.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.10
|
||||
text: "Minimize the admission of containers with capabilities assigned (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the use of capabilities in applications running on your cluster. Where a namespace
|
||||
contains applications which do not require any Linux capabities to operate consider adding
|
||||
a PSP which forbids the admission of containers which do not drop all capabilities.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.11
|
||||
text: "Minimize the admission of Windows HostProcess containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers that have `.securityContext.windowsOptions.hostProcess` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.12
|
||||
text: "Minimize the admission of HostPath volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `hostPath` volumes.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.13
|
||||
text: "Minimize the admission of containers which use HostPorts (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers which use `hostPort` sections.
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "Network Policies and CNI"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure that the CNI in use supports NetworkPolicies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If the CNI plugin in use does not support network policies, consideration should be given to
|
||||
making use of a different plugin, or finding an alternate mechanism for restricting traffic
|
||||
in the Kubernetes cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.3.2
|
||||
text: "Ensure that all Namespaces have NetworkPolicies defined (Manual)"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Prefer using Secrets as files over Secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If possible, rewrite application code to read Secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 5.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the Secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 5.5
|
||||
text: "Extensible Admission Control"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup image provenance.
|
||||
scored: false
|
||||
|
||||
- id: 5.7
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 5.7.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.2
|
||||
text: "Ensure that the seccomp profile is set to docker/default in your Pod definitions (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Use `securityContext` to enable the docker/default seccomp profile in your pod definitions.
|
||||
An example is as below:
|
||||
securityContext:
|
||||
seccompProfile:
|
||||
type: RuntimeDefault
|
||||
scored: false
|
||||
|
||||
- id: 5.7.3
|
||||
text: "Apply SecurityContext to your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply SecurityContexts to your Pods. For a
|
||||
suggested list of SecurityContexts, you may refer to the CIS Security Benchmark for Docker
|
||||
Containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.4
|
||||
text: "The default namespace should not be used (Manual)"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
scored: false
|
||||
54
cfg/k3s-cis-1.8/config.yaml
Normal file
54
cfg/k3s-cis-1.8/config.yaml
Normal file
@@ -0,0 +1,54 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
|
||||
master:
|
||||
components:
|
||||
- apiserver
|
||||
- kubelet
|
||||
- scheduler
|
||||
- controllermanager
|
||||
- etcd
|
||||
- policies
|
||||
apiserver:
|
||||
bins:
|
||||
- containerd
|
||||
kubelet:
|
||||
bins:
|
||||
- containerd
|
||||
defaultkubeconfig: /var/lib/rancher/k3s/agent/kubelet.kubeconfig
|
||||
defaultcafile: /var/lib/rancher/k3s/agent/client-ca.crt
|
||||
scheduler:
|
||||
bins:
|
||||
- containerd
|
||||
kubeconfig:
|
||||
- /var/lib/rancher/k3s/server/cred/scheduler.kubeconfig
|
||||
controllermanager:
|
||||
bins:
|
||||
- containerd
|
||||
kubeconfig:
|
||||
- /var/lib/rancher/k3s/server/cred/controller.kubeconfig
|
||||
etcd:
|
||||
bins:
|
||||
- containerd
|
||||
|
||||
etcd:
|
||||
confs: /var/lib/rancher/k3s/server/db/etcd/config
|
||||
|
||||
node:
|
||||
components:
|
||||
- kubelet
|
||||
- proxy
|
||||
kubelet:
|
||||
bins:
|
||||
- containerd
|
||||
confs:
|
||||
- /var/lib/rancher/k3s/agent/kubelet.kubeconfig
|
||||
defaultkubeconfig: /var/lib/rancher/k3s/agent/kubelet.kubeconfig
|
||||
defaultcafile: /var/lib/rancher/k3s/agent/client-ca.crt
|
||||
proxy:
|
||||
bins:
|
||||
- containerd
|
||||
defaultkubeconfig: /var/lib/rancher/k3s/agent/kubeproxy.kubeconfig
|
||||
policies:
|
||||
components:
|
||||
- policies
|
||||
62
cfg/k3s-cis-1.8/controlplane.yaml
Normal file
62
cfg/k3s-cis-1.8/controlplane.yaml
Normal file
@@ -0,0 +1,62 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.8"
|
||||
id: 3
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Client certificate authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be
|
||||
implemented in place of client certificates.
|
||||
scored: false
|
||||
|
||||
- id: 3.1.2
|
||||
text: "Service account token authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be implemented
|
||||
in place of service account tokens.
|
||||
scored: false
|
||||
|
||||
- id: 3.1.3
|
||||
text: "Bootstrap token authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be implemented
|
||||
in place of bootstrap tokens.
|
||||
scored: false
|
||||
|
||||
- id: 3.2
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that a minimal audit policy is created (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'audit-policy-file'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-policy-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Create an audit policy file for your cluster.
|
||||
scored: false
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the audit policy covers key security concerns (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the audit policy provided for the cluster and ensure that it covers
|
||||
at least the following areas,
|
||||
- Access to Secrets managed by the cluster. Care should be taken to only
|
||||
log Metadata for requests to Secrets, ConfigMaps, and TokenReviews, in
|
||||
order to avoid risk of logging sensitive data.
|
||||
- Modification of Pod and Deployment objects.
|
||||
- Use of `pods/exec`, `pods/portforward`, `pods/proxy` and `services/proxy`.
|
||||
For most requests, minimally logging at the Metadata level is recommended
|
||||
(the most basic level of logging).
|
||||
scored: false
|
||||
144
cfg/k3s-cis-1.8/etcd.yaml
Normal file
144
cfg/k3s-cis-1.8/etcd.yaml
Normal file
@@ -0,0 +1,144 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.8"
|
||||
id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
type: "etcd"
|
||||
groups:
|
||||
- id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
checks:
|
||||
- id: 2.1
|
||||
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- path: "{.client-transport-security.cert-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/server-client.crt"
|
||||
- path: "{.client-transport-security.key-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/server-client.key"
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s generates cert and key files for etcd.
|
||||
These are located in /var/lib/rancher/k3s/server/tls/etcd/.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to use custom cert and key files.
|
||||
scored: false
|
||||
|
||||
- id: 2.2
|
||||
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.client-transport-security.client-cert-auth}"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s sets the --client-cert-auth parameter to true.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to disable client certificate authentication.
|
||||
scored: false
|
||||
|
||||
- id: 2.3
|
||||
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- path: "{.client-transport-security.auto-tls}"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
- path: "{.client-transport-security.auto-tls}"
|
||||
set: false
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s does not set the --auto-tls parameter.
|
||||
If this check fails, edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --auto-tls parameter or set it to false.
|
||||
client-transport-security:
|
||||
auto-tls: false
|
||||
scored: false
|
||||
|
||||
- id: 2.4
|
||||
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are set as appropriate (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- path: "{.peer-transport-security.cert-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/peer-server-client.crt"
|
||||
- path: "{.peer-transport-security.key-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/peer-server-client.key"
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s generates peer cert and key files for etcd.
|
||||
These are located in /var/lib/rancher/k3s/server/tls/etcd/.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to use custom peer cert and key files.
|
||||
scored: false
|
||||
|
||||
- id: 2.5
|
||||
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.peer-transport-security.client-cert-auth}"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s sets the --peer-cert-auth parameter to true.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to disable peer client certificate authentication.
|
||||
scored: false
|
||||
|
||||
- id: 2.6
|
||||
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- path: "{.peer-transport-security.auto-tls}"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
- path: "{.peer-transport-security.auto-tls}"
|
||||
set: false
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s does not set the --peer-auto-tls parameter.
|
||||
If this check fails, edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --peer-auto-tls parameter or set it to false.
|
||||
peer-transport-security:
|
||||
auto-tls: false
|
||||
scored: false
|
||||
|
||||
- id: 2.7
|
||||
text: "Ensure that a unique Certificate Authority is used for etcd (Automated)"
|
||||
audit_config: "cat $etcdconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.peer-transport-security.trusted-ca-file}"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/var/lib/rancher/k3s/server/tls/etcd/peer-ca.crt"
|
||||
remediation: |
|
||||
If running on with sqlite or a external DB, etcd checks are Not Applicable.
|
||||
When running with embedded-etcd, K3s generates a unique certificate authority for etcd.
|
||||
This is located at /var/lib/rancher/k3s/server/tls/etcd/peer-ca.crt.
|
||||
If this check fails, ensure that the configuration file $etcdconf
|
||||
has not been modified to use a shared certificate authority.
|
||||
scored: false
|
||||
985
cfg/k3s-cis-1.8/master.yaml
Normal file
985
cfg/k3s-cis-1.8/master.yaml
Normal file
@@ -0,0 +1,985 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.8"
|
||||
id: 1
|
||||
text: "Control Plane Security Configuration"
|
||||
type: "master"
|
||||
groups:
|
||||
- id: 1.1
|
||||
text: "Control Plane Node Configuration Files"
|
||||
checks:
|
||||
- id: 1.1.1
|
||||
text: "Ensure that the API server pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c permissions=%a $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
By default, K3s embeds the api server within the k3s process. There is no API server pod specification file.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.2
|
||||
text: "Ensure that the API server pod specification file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c %U:%G $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
By default, K3s embeds the api server within the k3s process. There is no API server pod specification file.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.3
|
||||
text: "Ensure that the controller manager pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c permissions=%a $controllermanagerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
By default, K3s embeds the controller manager within the k3s process. There is no controller manager pod specification file.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.4
|
||||
text: "Ensure that the controller manager pod specification file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c %U:%G $controllermanagerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
By default, K3s embeds the controller manager within the k3s process. There is no controller manager pod specification file.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.5
|
||||
text: "Ensure that the scheduler pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c permissions=%a $schedulerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
By default, K3s embeds the scheduler within the k3s process. There is no scheduler pod specification file.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.6
|
||||
text: "Ensure that the scheduler pod specification file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c %U:%G $schedulerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
By default, K3s embeds the scheduler within the k3s process. There is no scheduler pod specification file.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.7
|
||||
text: "Ensure that the etcd pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then find $etcdconf -name '*etcd*' | xargs stat -c permissions=%a; fi'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
By default, K3s embeds etcd within the k3s process. There is no etcd pod specification file.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.8
|
||||
text: "Ensure that the etcd pod specification file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then find $etcdconf -name '*etcd*' | xargs stat -c %U:%G; fi'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
By default, K3s embeds etcd within the k3s process. There is no etcd pod specification file.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.9
|
||||
text: "Ensure that the Container Network Interface file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: find /var/lib/cni/networks -type f ! -name lock 2> /dev/null | xargs --no-run-if-empty stat -c permissions=%a
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
By default, K3s sets the CNI file permissions to 600.
|
||||
Note that for many CNIs, a lock file is created with permissions 750. This is expected and can be ignored.
|
||||
If you modify your CNI configuration, ensure that the permissions are set to 600.
|
||||
For example, chmod 600 /var/lib/cni/networks/<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.1.10
|
||||
text: "Ensure that the Container Network Interface file ownership is set to root:root (Automated)"
|
||||
audit: find /var/lib/cni/networks -type f 2> /dev/null | xargs --no-run-if-empty stat -c %U:%G
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root /var/lib/cni/networks/<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.1.11
|
||||
text: "Ensure that the etcd data directory permissions are set to 700 or more restrictive (Automated)"
|
||||
audit: |
|
||||
if [ "$(journalctl -m -u k3s | grep -m1 'Managed etcd cluster' | wc -l)" -gt 0 ]; then
|
||||
stat -c permissions=%a /var/lib/rancher/k3s/server/db/etcd
|
||||
else
|
||||
echo "permissions=700"
|
||||
fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "700"
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above). For example,
|
||||
chmod 700 /var/lib/etcd
|
||||
scored: true
|
||||
|
||||
- id: 1.1.12
|
||||
text: "Ensure that the etcd data directory ownership is set to etcd:etcd (Automated)"
|
||||
audit: ps -ef | grep $etcdbin | grep -- --data-dir | sed 's%.*data-dir[= ]\([^ ]*\).*%\1%' | xargs stat -c %U:%G
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "etcd:etcd"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
For K3s, etcd is embedded within the k3s process. There is no separate etcd process.
|
||||
Therefore the etcd data directory ownership is managed by the k3s process and should be root:root.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.13
|
||||
text: "Ensure that the admin.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /var/lib/rancher/k3s/server/cred/admin.kubeconfig; then stat -c permissions=%a /var/lib/rancher/k3s/server/cred/admin.kubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 /var/lib/rancher/k3s/server/cred/admin.kubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.14
|
||||
text: "Ensure that the admin.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e /var/lib/rancher/k3s/server/cred/admin.kubeconfig; then stat -c %U:%G /var/lib/rancher/k3s/server/cred/admin.kubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
compare:
|
||||
op: eq
|
||||
value: "root:root"
|
||||
set: true
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root /var/lib/rancher/k3s/server/cred/admin.kubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.15
|
||||
text: "Ensure that the scheduler.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerkubeconfig; then stat -c permissions=%a $schedulerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $schedulerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.16
|
||||
text: "Ensure that the scheduler.conf file ownership is set to root:root (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerkubeconfig; then stat -c %U:%G $schedulerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $schedulerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.17
|
||||
text: "Ensure that the controller-manager.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerkubeconfig; then stat -c permissions=%a $controllermanagerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $controllermanagerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.18
|
||||
text: "Ensure that the controller-manager.conf file ownership is set to root:root (Automated)"
|
||||
audit: "stat -c %U:%G $controllermanagerkubeconfig"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
compare:
|
||||
op: eq
|
||||
value: "root:root"
|
||||
set: true
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $controllermanagerkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 1.1.19
|
||||
text: "Ensure that the Kubernetes PKI directory and file ownership is set to root:root (Automated)"
|
||||
audit: "stat -c %U:%G /var/lib/rancher/k3s/server/tls"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown -R root:root /var/lib/rancher/k3s/server/tls
|
||||
scored: true
|
||||
|
||||
- id: 1.1.20
|
||||
text: "Ensure that the Kubernetes PKI certificate file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: "/bin/sh -c 'stat -c permissions=%a /var/lib/rancher/k3s/server/tls/*.crt'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the master node.
|
||||
For example,
|
||||
chmod -R 600 /var/lib/rancher/k3s/server/tls/*.crt
|
||||
scored: false
|
||||
|
||||
- id: 1.1.21
|
||||
text: "Ensure that the Kubernetes PKI key file permissions are set to 600 (Automated)"
|
||||
audit: "/bin/sh -c 'stat -c permissions=%a /var/lib/rancher/k3s/server/tls/*.key'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the master node.
|
||||
For example,
|
||||
chmod -R 600 /var/lib/rancher/k3s/server/tls/*.key
|
||||
scored: true
|
||||
|
||||
- id: 1.2
|
||||
text: "API Server"
|
||||
checks:
|
||||
- id: 1.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'anonymous-auth'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
By default, K3s sets the --anonymous-auth argument to false.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove anything similar to below.
|
||||
kube-apiserver-arg:
|
||||
- "anonymous-auth=true"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.2
|
||||
text: "Ensure that the --token-auth-file parameter is not set (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--token-auth-file"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and configure alternate mechanisms for authentication.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove anything similar to below.
|
||||
kube-apiserver-arg:
|
||||
- "token-auth-file=<path>"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.3
|
||||
text: "Ensure that the --DenyServiceExternalIPs is not set (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "DenyServiceExternalIPs"
|
||||
set: true
|
||||
- flag: "--enable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s does not set DenyServiceExternalIPs.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml, remove any lines like below.
|
||||
kube-apiserver-arg:
|
||||
- "enable-admission-plugins=DenyServiceExternalIPs"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.4
|
||||
text: "Ensure that the --kubelet-client-certificate and --kubelet-client-key arguments are set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--kubelet-client-certificate"
|
||||
- flag: "--kubelet-client-key"
|
||||
remediation: |
|
||||
By default, K3s automatically provides the kubelet client certificate and key.
|
||||
They are generated and located at /var/lib/rancher/k3s/server/tls/client-kube-apiserver.crt and /var/lib/rancher/k3s/server/tls/client-kube-apiserver.key
|
||||
If for some reason you need to provide your own certificate and key, you can set the
|
||||
below parameters in the K3s config file /etc/rancher/k3s/config.yaml.
|
||||
kube-apiserver-arg:
|
||||
- "kubelet-client-certificate=<path/to/client-cert-file>"
|
||||
- "kubelet-client-key=<path/to/client-key-file>"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.5
|
||||
text: "Ensure that the --kubelet-certificate-authority argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'kubelet-certificate-authority'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--kubelet-certificate-authority"
|
||||
remediation: |
|
||||
By default, K3s automatically provides the kubelet CA cert file, at /var/lib/rancher/k3s/server/tls/server-ca.crt.
|
||||
If for some reason you need to provide your own ca certificate, look at using the k3s certificate command line tool.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-apiserver-arg:
|
||||
- "kubelet-certificate-authority=<path/to/ca-cert-file>"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.6
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'authorization-mode'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "AlwaysAllow"
|
||||
remediation: |
|
||||
By default, K3s does not set the --authorization-mode to AlwaysAllow.
|
||||
If this check fails, edit K3s config file /etc/rancher/k3s/config.yaml, remove any lines like below.
|
||||
kube-apiserver-arg:
|
||||
- "authorization-mode=AlwaysAllow"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.7
|
||||
text: "Ensure that the --authorization-mode argument includes Node (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'authorization-mode'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "Node"
|
||||
remediation: |
|
||||
By default, K3s sets the --authorization-mode to Node and RBAC.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml,
|
||||
ensure that you are not overriding authorization-mode.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.8
|
||||
text: "Ensure that the --authorization-mode argument includes RBAC (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'authorization-mode'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "RBAC"
|
||||
remediation: |
|
||||
By default, K3s sets the --authorization-mode to Node and RBAC.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml,
|
||||
ensure that you are not overriding authorization-mode.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.9
|
||||
text: "Ensure that the admission control plugin EventRateLimit is set (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'enable-admission-plugins'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "EventRateLimit"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set the desired limits in a configuration file.
|
||||
Then, edit the K3s config file /etc/rancher/k3s/config.yaml and set the below parameters.
|
||||
kube-apiserver-arg:
|
||||
- "enable-admission-plugins=...,EventRateLimit,..."
|
||||
- "admission-control-config-file=<path/to/configuration/file>"
|
||||
scored: false
|
||||
|
||||
- id: 1.2.10
|
||||
text: "Ensure that the admission control plugin AlwaysAdmit is not set (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'enable-admission-plugins'"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAdmit
|
||||
- flag: "--enable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s does not set the --enable-admission-plugins to AlwaysAdmit.
|
||||
If this check fails, edit K3s config file /etc/rancher/k3s/config.yaml, remove any lines like below.
|
||||
kube-apiserver-arg:
|
||||
- "enable-admission-plugins=AlwaysAdmit"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.11
|
||||
text: "Ensure that the admission control plugin AlwaysPullImages is set (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "AlwaysPullImages"
|
||||
remediation: |
|
||||
Permissive, per CIS guidelines,
|
||||
"This setting could impact offline or isolated clusters, which have images pre-loaded and
|
||||
do not have access to a registry to pull in-use images. This setting is not appropriate for
|
||||
clusters which use this configuration."
|
||||
Edit the K3s config file /etc/rancher/k3s/config.yaml and set the below parameter.
|
||||
kube-apiserver-arg:
|
||||
- "enable-admission-plugins=...,AlwaysPullImages,..."
|
||||
scored: false
|
||||
|
||||
- id: 1.2.12
|
||||
text: "Ensure that the admission control plugin SecurityContextDeny is set if PodSecurityPolicy is not used (Manual)"
|
||||
type: "skip"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "SecurityContextDeny"
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "PodSecurityPolicy"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
Enabling Pod Security Policy is no longer supported on K3s v1.25+ and will cause applications to unexpectedly fail.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.13
|
||||
text: "Ensure that the admission control plugin ServiceAccount is set (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "ServiceAccount"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s does not set the --disable-admission-plugins to anything.
|
||||
Follow the documentation and create ServiceAccount objects as per your environment.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-apiserver-arg:
|
||||
- "disable-admission-plugins=ServiceAccount"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.14
|
||||
text: "Ensure that the admission control plugin NamespaceLifecycle is set (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "NamespaceLifecycle"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s does not set the --disable-admission-plugins to anything.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-apiserver-arg:
|
||||
- "disable-admission-plugins=...,NamespaceLifecycle,..."
|
||||
scored: true
|
||||
|
||||
- id: 1.2.15
|
||||
text: "Ensure that the admission control plugin NodeRestriction is set (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'enable-admission-plugins'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "NodeRestriction"
|
||||
remediation: |
|
||||
By default, K3s sets the --enable-admission-plugins to NodeRestriction.
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, check that you are not overriding the admission plugins.
|
||||
If you are, include NodeRestriction in the list.
|
||||
kube-apiserver-arg:
|
||||
- "enable-admission-plugins=...,NodeRestriction,..."
|
||||
scored: true
|
||||
|
||||
- id: 1.2.16
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'profiling'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
By default, K3s sets the --profiling argument to false.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-apiserver-arg:
|
||||
- "profiling=true"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.17
|
||||
text: "Ensure that the --audit-log-path argument is set (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-path"
|
||||
remediation: |
|
||||
Edit the K3s config file /etc/rancher/k3s/config.yaml and set the audit-log-path parameter to a suitable path and
|
||||
file where you would like audit logs to be written, for example,
|
||||
kube-apiserver-arg:
|
||||
- "audit-log-path=/var/lib/rancher/k3s/server/logs/audit.log"
|
||||
scored: false
|
||||
|
||||
- id: 1.2.18
|
||||
text: "Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxage"
|
||||
compare:
|
||||
op: gte
|
||||
value: 30
|
||||
remediation: |
|
||||
Edit the K3s config file /etc/rancher/k3s/config.yaml on the control plane node and
|
||||
set the audit-log-maxage parameter to 30 or as an appropriate number of days, for example,
|
||||
kube-apiserver-arg:
|
||||
- "audit-log-maxage=30"
|
||||
scored: false
|
||||
|
||||
- id: 1.2.19
|
||||
text: "Ensure that the --audit-log-maxbackup argument is set to 10 or as appropriate (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxbackup"
|
||||
compare:
|
||||
op: gte
|
||||
value: 10
|
||||
remediation: |
|
||||
Edit the K3s config file /etc/rancher/k3s/config.yaml on the control plane node and
|
||||
set the audit-log-maxbackup parameter to 10 or to an appropriate value. For example,
|
||||
kube-apiserver-arg:
|
||||
- "audit-log-maxbackup=10"
|
||||
scored: false
|
||||
|
||||
- id: 1.2.20
|
||||
text: "Ensure that the --audit-log-maxsize argument is set to 100 or as appropriate (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxsize"
|
||||
compare:
|
||||
op: gte
|
||||
value: 100
|
||||
remediation: |
|
||||
Edit the K3s config file /etc/rancher/k3s/config.yaml on the control plane node and
|
||||
set the audit-log-maxsize parameter to an appropriate size in MB. For example,
|
||||
kube-apiserver-arg:
|
||||
- "audit-log-maxsize=100"
|
||||
scored: false
|
||||
|
||||
- id: 1.2.21
|
||||
text: "Ensure that the --request-timeout argument is set as appropriate (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--request-timeout"
|
||||
remediation: |
|
||||
Permissive, per CIS guidelines,
|
||||
"it is recommended to set this limit as appropriate and change the default limit of 60 seconds only if needed".
|
||||
Edit the K3s config file /etc/rancher/k3s/config.yaml
|
||||
and set the below parameter if needed. For example,
|
||||
kube-apiserver-arg:
|
||||
- "request-timeout=300s"
|
||||
scored: false
|
||||
|
||||
- id: 1.2.22
|
||||
text: "Ensure that the --service-account-lookup argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--service-account-lookup"
|
||||
set: false
|
||||
- flag: "--service-account-lookup"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
By default, K3s does not set the --service-account-lookup argument.
|
||||
Edit the K3s config file /etc/rancher/k3s/config.yaml and set the service-account-lookup. For example,
|
||||
kube-apiserver-arg:
|
||||
- "service-account-lookup=true"
|
||||
Alternatively, you can delete the service-account-lookup parameter from this file so
|
||||
that the default takes effect.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.23
|
||||
text: "Ensure that the --service-account-key-file argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-key-file"
|
||||
remediation: |
|
||||
K3s automatically generates and sets the service account key file.
|
||||
It is located at /var/lib/rancher/k3s/server/tls/service.key.
|
||||
If this check fails, edit K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-apiserver-arg:
|
||||
- "service-account-key-file=<path>"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.24
|
||||
text: "Ensure that the --etcd-certfile and --etcd-keyfile arguments are set as appropriate (Automated)"
|
||||
audit: |
|
||||
if [ "$(journalctl -m -u k3s | grep -m1 'Managed etcd cluster' | wc -l)" -gt 0 ]; then
|
||||
journalctl -m -u k3s | grep -m1 'Running kube-apiserver' | tail -n1
|
||||
else
|
||||
echo "--etcd-certfile AND --etcd-keyfile"
|
||||
fi
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--etcd-certfile"
|
||||
set: true
|
||||
- flag: "--etcd-keyfile"
|
||||
set: true
|
||||
remediation: |
|
||||
K3s automatically generates and sets the etcd certificate and key files.
|
||||
They are located at /var/lib/rancher/k3s/server/tls/etcd/client.crt and /var/lib/rancher/k3s/server/tls/etcd/client.key.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-apiserver-arg:
|
||||
- "etcd-certfile=<path>"
|
||||
- "etcd-keyfile=<path>"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.25
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep -A1 'Running kube-apiserver' | tail -n2"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--tls-cert-file"
|
||||
set: true
|
||||
- flag: "--tls-private-key-file"
|
||||
set: true
|
||||
remediation: |
|
||||
By default, K3s automatically generates and provides the TLS certificate and private key for the apiserver.
|
||||
They are generated and located at /var/lib/rancher/k3s/server/tls/serving-kube-apiserver.crt and /var/lib/rancher/k3s/server/tls/serving-kube-apiserver.key
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-apiserver-arg:
|
||||
- "tls-cert-file=<path>"
|
||||
- "tls-private-key-file=<path>"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.26
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'client-ca-file'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--client-ca-file"
|
||||
remediation: |
|
||||
By default, K3s automatically provides the client certificate authority file.
|
||||
It is generated and located at /var/lib/rancher/k3s/server/tls/client-ca.crt.
|
||||
If for some reason you need to provide your own ca certificate, look at using the k3s certificate command line tool.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-apiserver-arg:
|
||||
- "client-ca-file=<path>"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.27
|
||||
text: "Ensure that the --etcd-cafile argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'etcd-cafile'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--etcd-cafile"
|
||||
remediation: |
|
||||
By default, K3s automatically provides the etcd certificate authority file.
|
||||
It is generated and located at /var/lib/rancher/k3s/server/tls/client-ca.crt.
|
||||
If for some reason you need to provide your own ca certificate, look at using the k3s certificate command line tool.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-apiserver-arg:
|
||||
- "etcd-cafile=<path>"
|
||||
scored: true
|
||||
|
||||
- id: 1.2.28
|
||||
text: "Ensure that the --encryption-provider-config argument is set as appropriate (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'encryption-provider-config'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--encryption-provider-config"
|
||||
remediation: |
|
||||
K3s can be configured to use encryption providers to encrypt secrets at rest.
|
||||
Edit the K3s config file /etc/rancher/k3s/config.yaml on the control plane node and set the below parameter.
|
||||
secrets-encryption: true
|
||||
Secrets encryption can then be managed with the k3s secrets-encrypt command line tool.
|
||||
If needed, you can find the generated encryption config at /var/lib/rancher/k3s/server/cred/encryption-config.json.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.29
|
||||
text: "Ensure that encryption providers are appropriately configured (Manual)"
|
||||
audit: |
|
||||
ENCRYPTION_PROVIDER_CONFIG=$(journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep -- --encryption-provider-config | sed 's%.*encryption-provider-config[= ]\([^ ]*\).*%\1%')
|
||||
if test -e $ENCRYPTION_PROVIDER_CONFIG; then grep -o 'providers\"\:\[.*\]' $ENCRYPTION_PROVIDER_CONFIG | grep -o "[A-Za-z]*" | head -2 | tail -1 | sed 's/^/provider=/'; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "provider"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "aescbc,kms,secretbox"
|
||||
remediation: |
|
||||
K3s can be configured to use encryption providers to encrypt secrets at rest. K3s will utilize the aescbc provider.
|
||||
Edit the K3s config file /etc/rancher/k3s/config.yaml on the control plane node and set the below parameter.
|
||||
secrets-encryption: true
|
||||
Secrets encryption can then be managed with the k3s secrets-encrypt command line tool.
|
||||
If needed, you can find the generated encryption config at /var/lib/rancher/k3s/server/cred/encryption-config.json
|
||||
scored: false
|
||||
|
||||
- id: 1.2.30
|
||||
text: "Ensure that the API Server only makes use of Strong Cryptographic Ciphers (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-apiserver' | tail -n1 | grep 'tls-cipher-suites'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--tls-cipher-suites"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384"
|
||||
remediation: |
|
||||
By default, the K3s kube-apiserver complies with this test. Changes to these values may cause regression, therefore ensure that all apiserver clients support the new TLS configuration before applying it in production deployments.
|
||||
If a custom TLS configuration is required, consider also creating a custom version of this rule that aligns with your requirements.
|
||||
If this check fails, remove any custom configuration around `tls-cipher-suites` or update the /etc/rancher/k3s/config.yaml file to match the default by adding the following:
|
||||
kube-apiserver-arg:
|
||||
- "tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305"
|
||||
scored: true
|
||||
|
||||
- id: 1.3
|
||||
text: "Controller Manager"
|
||||
checks:
|
||||
- id: 1.3.1
|
||||
text: "Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Manual)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1 | grep 'terminated-pod-gc-threshold'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--terminated-pod-gc-threshold"
|
||||
remediation: |
|
||||
Edit the K3s config file /etc/rancher/k3s/config.yaml on the control plane node
|
||||
and set the --terminated-pod-gc-threshold to an appropriate threshold,
|
||||
kube-controller-manager-arg:
|
||||
- "terminated-pod-gc-threshold=10"
|
||||
scored: false
|
||||
|
||||
- id: 1.3.2
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1 | grep 'profiling'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
By default, K3s sets the --profiling argument to false.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-controller-manager-arg:
|
||||
- "profiling=true"
|
||||
scored: true
|
||||
|
||||
- id: 1.3.3
|
||||
text: "Ensure that the --use-service-account-credentials argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1 | grep 'use-service-account-credentials'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--use-service-account-credentials"
|
||||
compare:
|
||||
op: noteq
|
||||
value: false
|
||||
remediation: |
|
||||
By default, K3s sets the --use-service-account-credentials argument to true.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-controller-manager-arg:
|
||||
- "use-service-account-credentials=false"
|
||||
scored: true
|
||||
|
||||
- id: 1.3.4
|
||||
text: "Ensure that the --service-account-private-key-file argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1 | grep 'service-account-private-key-file'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-private-key-file"
|
||||
remediation: |
|
||||
By default, K3s automatically provides the service account private key file.
|
||||
It is generated and located at /var/lib/rancher/k3s/server/tls/service.current.key.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-controller-manager-arg:
|
||||
- "service-account-private-key-file=<path>"
|
||||
scored: true
|
||||
|
||||
- id: 1.3.5
|
||||
text: "Ensure that the --root-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1 | grep 'root-ca-file'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--root-ca-file"
|
||||
remediation: |
|
||||
By default, K3s automatically provides the root CA file.
|
||||
It is generated and located at /var/lib/rancher/k3s/server/tls/server-ca.crt.
|
||||
If for some reason you need to provide your own ca certificate, look at using the k3s certificate command line tool.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-controller-manager-arg:
|
||||
- "root-ca-file=<path>"
|
||||
scored: true
|
||||
|
||||
- id: 1.3.6
|
||||
text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--feature-gates"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "RotateKubeletServerCertificate=false"
|
||||
set: true
|
||||
- flag: "--feature-gates"
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s does not set the RotateKubeletServerCertificate feature gate.
|
||||
If you have enabled this feature gate, you should remove it.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml, remove any lines like below.
|
||||
kube-controller-manager-arg:
|
||||
- "feature-gate=RotateKubeletServerCertificate"
|
||||
scored: true
|
||||
|
||||
- id: 1.3.7
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-controller-manager' | tail -n1"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
set: true
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s sets the --bind-address argument to 127.0.0.1
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-controller-manager-arg:
|
||||
- "bind-address=<IP>"
|
||||
scored: true
|
||||
|
||||
- id: 1.4
|
||||
text: "Scheduler"
|
||||
checks:
|
||||
- id: 1.4.1
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-scheduler' | tail -n1 | grep 'profiling'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
set: true
|
||||
remediation: |
|
||||
By default, K3s sets the --profiling argument to false.
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-scheduler-arg:
|
||||
- "profiling=true"
|
||||
scored: true
|
||||
|
||||
- id: 1.4.2
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "journalctl -m -u k3s | grep 'Running kube-scheduler' | tail -n1 | grep 'bind-address'"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
set: true
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s sets the --bind-address argument to 127.0.0.1
|
||||
If this check fails, edit the K3s config file /etc/rancher/k3s/config.yaml and remove any lines like below.
|
||||
kube-scheduler-arg:
|
||||
- "bind-address=<IP>"
|
||||
scored: true
|
||||
422
cfg/k3s-cis-1.8/node.yaml
Normal file
422
cfg/k3s-cis-1.8/node.yaml
Normal file
@@ -0,0 +1,422 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.8"
|
||||
id: 4
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the kubelet service file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c permissions=%a $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
The kubelet is embedded in the k3s process. There is no kubelet service file, all configuration is passed in as arguments at runtime.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
The kubelet is embedded in the k3s process. There is no kubelet service file, all configuration is passed in as arguments at runtime.
|
||||
Not Applicable.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
text: "If proxy kubeconfig file exists ensure permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c permissions=%a $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.4
|
||||
text: "If proxy kubeconfig file exists ensure ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c %U:%G $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c permissions=%a $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Automated)"
|
||||
audit: 'stat -c %U:%G $kubeletkubeconfig'
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "stat -c permissions=%a $kubeletcafile"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command to modify the file permissions of the
|
||||
--client-ca-file chmod 600 $kubeletcafile
|
||||
scored: true
|
||||
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Automated)"
|
||||
audit: "stat -c %U:%G $kubeletcafile"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
compare:
|
||||
op: eq
|
||||
value: root:root
|
||||
remediation: |
|
||||
Run the following command to modify the ownership of the --client-ca-file.
|
||||
chown root:root $kubeletcafile
|
||||
scored: true
|
||||
|
||||
- id: 4.1.9
|
||||
text: "Ensure that the kubelet --config configuration file has permissions set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c permissions=%a $kubeletconf; fi'' '
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
The kubelet is embedded in the k3s process. There is no kubelet config file, all configuration is passed in as arguments at runtime.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.10
|
||||
text: "Ensure that the kubelet --config configuration file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi'' '
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
The kubelet is embedded in the k3s process. There is no kubelet config file, all configuration is passed in as arguments at runtime.
|
||||
scored: true
|
||||
|
||||
- id: 4.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: '/bin/sh -c ''if test $(journalctl -m -u k3s | grep "Running kube-apiserver" | wc -l) -gt 0; then journalctl -m -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "anonymous-auth" | grep -v grep; else echo "--anonymous-auth=false"; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: '{.authentication.anonymous.enabled}'
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
By default, K3s sets the --anonymous-auth to false. If you have set this to a different value, you
|
||||
should set it back to false. If using the K3s config file /etc/rancher/k3s/config.yaml, remove any lines similar to below.
|
||||
kubelet-arg:
|
||||
- "anonymous-auth=true"
|
||||
If using the command line, edit the K3s service file and remove the below argument.
|
||||
--kubelet-arg="anonymous-auth=true"
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: '/bin/sh -c ''if test $(journalctl -m -u k3s | grep "Running kube-apiserver" | wc -l) -gt 0; then journalctl -m -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "authorization-mode"; else echo "--authorization-mode=Webhook"; fi'' '
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: '{.authorization.mode}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
remediation: |
|
||||
By default, K3s does not set the --authorization-mode to AlwaysAllow.
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, remove any lines similar to below.
|
||||
kubelet-arg:
|
||||
- "authorization-mode=AlwaysAllow"
|
||||
If using the command line, edit the K3s service file and remove the below argument.
|
||||
--kubelet-arg="authorization-mode=AlwaysAllow"
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: '/bin/sh -c ''if test $(journalctl -m -u k3s | grep "Running kube-apiserver" | wc -l) -gt 0; then journalctl -m -u k3s | grep "Running kube-apiserver" | tail -n1 | grep "client-ca-file"; else echo "--client-ca-file=/var/lib/rancher/k3s/server/tls/request-header-ca.crt"; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: '{.authentication.x509.clientCAFile}'
|
||||
remediation: |
|
||||
By default, K3s automatically provides the client ca certificate for the Kubelet.
|
||||
It is generated and located at /var/lib/rancher/k3s/agent/client-ca.crt
|
||||
scored: true
|
||||
|
||||
- id: 4.2.4
|
||||
text: "Verify that the --read-only-port argument is set to 0 (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s sets the --read-only-port to 0. If you have set this to a different value, you
|
||||
should set it back to 0. If using the K3s config file /etc/rancher/k3s/config.yaml, remove any lines similar to below.
|
||||
kubelet-arg:
|
||||
- "read-only-port=XXXX"
|
||||
If using the command line, edit the K3s service file and remove the below argument.
|
||||
--kubelet-arg="read-only-port=XXXX"
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Manual)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, set the following parameter to an appropriate value.
|
||||
kubelet-arg:
|
||||
- "streaming-connection-idle-timeout=5m"
|
||||
If using the command line, run K3s with --kubelet-arg="streaming-connection-idle-timeout=5m".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.6
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, set the following parameter.
|
||||
kubelet-arg:
|
||||
- "make-iptables-util-chains=true"
|
||||
If using the command line, run K3s with --kubelet-arg="make-iptables-util-chains=true".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.7
|
||||
text: "Ensure that the --hostname-override argument is not set (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
type: "skip"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --hostname-override
|
||||
set: false
|
||||
remediation: |
|
||||
Not Applicable.
|
||||
By default, K3s does set the --hostname-override argument. Per CIS guidelines, this is to comply
|
||||
with cloud providers that require this flag to ensure that hostname matches node names.
|
||||
scored: true
|
||||
|
||||
- id: 4.2.8
|
||||
text: "Ensure that the eventRecordQPS argument is set to a level which ensures appropriate event capture (Manual)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
compare:
|
||||
op: gte
|
||||
value: 0
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
By default, K3s sets the event-qps to 0. Should you wish to change this,
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, set the following parameter to an appropriate value.
|
||||
kubelet-arg:
|
||||
- "event-qps=<value>"
|
||||
If using the command line, run K3s with --kubelet-arg="event-qps=<value>".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.9
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cert-file
|
||||
path: '/var/lib/rancher/k3s/agent/serving-kubelet.crt'
|
||||
- flag: --tls-private-key-file
|
||||
path: '/var/lib/rancher/k3s/agent/serving-kubelet.key'
|
||||
remediation: |
|
||||
By default, K3s automatically provides the TLS certificate and private key for the Kubelet.
|
||||
They are generated and located at /var/lib/rancher/k3s/agent/serving-kubelet.crt and /var/lib/rancher/k3s/agent/serving-kubelet.key
|
||||
If for some reason you need to provide your own certificate and key, you can set the
|
||||
below parameters in the K3s config file /etc/rancher/k3s/config.yaml.
|
||||
kubelet-arg:
|
||||
- "tls-cert-file=<path/to/tls-cert-file>"
|
||||
- "tls-private-key-file=<path/to/tls-private-key-file>"
|
||||
scored: true
|
||||
|
||||
- id: 4.2.10
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
By default, K3s does not set the --rotate-certificates argument. If you have set this flag with a value of `false`, you should either set it to `true` or completely remove the flag.
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, remove any rotate-certificates parameter.
|
||||
If using the command line, remove the K3s flag --kubelet-arg="rotate-certificates".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.11
|
||||
text: "Verify that the RotateKubeletServerCertificate argument is set to true (Automated)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: false
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
set: false
|
||||
remediation: |
|
||||
By default, K3s does not set the RotateKubeletServerCertificate feature gate.
|
||||
If you have enabled this feature gate, you should remove it.
|
||||
If using the K3s config file /etc/rancher/k3s/config.yaml, remove any feature-gate=RotateKubeletServerCertificate parameter.
|
||||
If using the command line, remove the K3s flag --kubelet-arg="feature-gate=RotateKubeletServerCertificate".
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.12
|
||||
text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cipher-suites
|
||||
path: '{range .tlsCipherSuites[:]}{}{'',''}{end}'
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a K3s config file /etc/rancher/k3s/config.yaml, edit the file to set `tlsCipherSuites` to
|
||||
kubelet-arg:
|
||||
- "tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305"
|
||||
or to a subset of these values.
|
||||
If using the command line, add the K3s flag --kubelet-arg="tls-cipher-suites=<same values as above>"
|
||||
Based on your system, restart the k3s service. For example,
|
||||
systemctl restart k3s.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.13
|
||||
text: "Ensure that a limit is set on pod PIDs (Manual)"
|
||||
audit: "journalctl -m -u k3s -u k3s-agent | grep 'Running kubelet' | tail -n1"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --pod-max-pids
|
||||
path: '{.podPidsLimit}'
|
||||
remediation: |
|
||||
Decide on an appropriate level for this parameter and set it,
|
||||
If using a K3s config file /etc/rancher/k3s/config.yaml, edit the file to set `podPidsLimit` to
|
||||
kubelet-arg:
|
||||
- "pod-max-pids=<value>"
|
||||
scored: false
|
||||
300
cfg/k3s-cis-1.8/policies.yaml
Normal file
300
cfg/k3s-cis-1.8/policies.yaml
Normal file
@@ -0,0 +1,300 @@
|
||||
---
|
||||
controls:
|
||||
version: "k3s-cis-1.8"
|
||||
id: 5
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role :
|
||||
kubectl delete clusterrolebinding [name]
|
||||
scored: false
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize access to secrets (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to Secret objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Minimize access to create pods (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to pod objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.5
|
||||
text: "Ensure that default service accounts are not actively used. (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
||||
to the Kubernetes API server.
|
||||
Modify the configuration of each default service account to include this value
|
||||
automountServiceAccountToken: false
|
||||
scored: false
|
||||
|
||||
|
||||
- id: 5.1.6
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Modify the definition of pods and service accounts which do not need to mount service
|
||||
account tokens to disable it.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.7
|
||||
text: "Avoid use of system:masters group (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.8
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.9
|
||||
text: "Minimize access to create persistent volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to PersistentVolume objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.10
|
||||
text: "Minimize access to the proxy sub-resource of nodes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the proxy sub-resource of node objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.11
|
||||
text: "Minimize access to the approval sub-resource of certificatesigningrequests objects (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the approval sub-resource of certificatesigningrequest objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.12
|
||||
text: "Minimize access to webhook configuration objects (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the validatingwebhookconfigurations or mutatingwebhookconfigurations objects
|
||||
scored: false
|
||||
|
||||
- id: 5.1.13
|
||||
text: "Minimize access to the service account token creation (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the token sub-resource of serviceaccount objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Pod Security Standards"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Ensure that the cluster has at least one active policy control mechanism in place (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that either Pod Security Admission or an external policy control system is in place
|
||||
for every namespace which contains user workloads.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.2
|
||||
text: "Minimize the admission of privileged containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of privileged containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Automated)"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostPID` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Automated)"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostIPC` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.5
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Automated)"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostNetwork` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.6
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `.spec.allowPrivilegeEscalation` set to `true`.
|
||||
scored: true
|
||||
|
||||
- id: 5.2.7
|
||||
text: "Minimize the admission of root containers (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a policy for each namespace in the cluster, ensuring that either `MustRunAsNonRoot`
|
||||
or `MustRunAs` with the range of UIDs not including 0, is set.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.8
|
||||
text: "Minimize the admission of containers with the NET_RAW capability (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with the `NET_RAW` capability.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.9
|
||||
text: "Minimize the admission of containers with added capabilities (Automated)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that `allowedCapabilities` is not present in policies for the cluster unless
|
||||
it is set to an empty array.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.10
|
||||
text: "Minimize the admission of containers with capabilities assigned (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the use of capabilities in applications running on your cluster. Where a namespace
|
||||
contains applications which do not require any Linux capabities to operate consider adding
|
||||
a PSP which forbids the admission of containers which do not drop all capabilities.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.11
|
||||
text: "Minimize the admission of Windows HostProcess containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers that have `.securityContext.windowsOptions.hostProcess` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.12
|
||||
text: "Minimize the admission of HostPath volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `hostPath` volumes.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.13
|
||||
text: "Minimize the admission of containers which use HostPorts (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers which use `hostPort` sections.
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "Network Policies and CNI"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure that the CNI in use supports NetworkPolicies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If the CNI plugin in use does not support network policies, consideration should be given to
|
||||
making use of a different plugin, or finding an alternate mechanism for restricting traffic
|
||||
in the Kubernetes cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.3.2
|
||||
text: "Ensure that all Namespaces have NetworkPolicies defined (Manual)"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Prefer using Secrets as files over Secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If possible, rewrite application code to read Secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 5.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the Secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 5.5
|
||||
text: "Extensible Admission Control"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup image provenance.
|
||||
scored: false
|
||||
|
||||
- id: 5.7
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 5.7.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.2
|
||||
text: "Ensure that the seccomp profile is set to docker/default in your Pod definitions (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Use `securityContext` to enable the docker/default seccomp profile in your pod definitions.
|
||||
An example is as below:
|
||||
securityContext:
|
||||
seccompProfile:
|
||||
type: RuntimeDefault
|
||||
scored: false
|
||||
|
||||
- id: 5.7.3
|
||||
text: "Apply SecurityContext to your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply SecurityContexts to your Pods. For a
|
||||
suggested list of SecurityContexts, you may refer to the CIS Security Benchmark for Docker
|
||||
Containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.4
|
||||
text: "The default namespace should not be used (Manual)"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
scored: false
|
||||
@@ -11,16 +11,17 @@ groups:
|
||||
- id: 2.1
|
||||
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Manual)"
|
||||
audit: |
|
||||
# For --cert-file
|
||||
for i in $(oc get pods -oname -n openshift-etcd)
|
||||
do
|
||||
oc exec -n openshift-etcd -c etcd $i -- ps -o command= -C etcd | sed 's/.*\(--cert-file=[^ ]*\).*/\1/'
|
||||
done 2>/dev/null
|
||||
# For --key-file
|
||||
for i in $(oc get pods -oname -n openshift-etcd)
|
||||
do
|
||||
oc exec -n openshift-etcd -c etcd $i -- ps -o command= -C etcd | sed 's/.*\(--key-file=[^ ]*\).*/\1/'
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
# Get the pod name in the openshift-etcd namespace
|
||||
POD_NAME=$(oc get pods -n openshift-etcd -l app=etcd --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching file found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-etcd -c etcd "$POD_NAME" -- ps -o command= -C etcd | sed 's/.*\(--cert-file=[^ ]*\).*/\1/'
|
||||
oc exec -n openshift-etcd -c etcd "$POD_NAME" -- ps -o command= -C etcd | sed 's/.*\(--key-file=[^ ]*\).*/\1/'
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -36,10 +37,16 @@ groups:
|
||||
- id: 2.2
|
||||
text: "Ensure that the --client-cert-auth argument is set to true (Manual)"
|
||||
audit: |
|
||||
for i in $(oc get pods -oname -n openshift-etcd)
|
||||
do
|
||||
oc exec -n openshift-etcd -c etcd $i -- ps -o command= -C etcd | sed 's/.*\(--client-cert-auth=[^ ]*\).*/\1/'
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
# Get the pod name in the openshift-etcd namespace
|
||||
POD_NAME=$(oc get pods -n openshift-etcd -l app=etcd --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching file found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-etcd -c etcd "$POD_NAME" -- ps -o command= -C etcd | sed 's/.*\(--client-cert-auth=[^ ]*\).*/\1/'
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -55,10 +62,16 @@ groups:
|
||||
text: "Ensure that the --auto-tls argument is not set to true (Manual)"
|
||||
audit: |
|
||||
# Returns 0 if found, 1 if not found
|
||||
for i in $(oc get pods -oname -n openshift-etcd)
|
||||
do
|
||||
oc exec -n openshift-etcd -c etcd $i -- ps -o command= -C etcd | grep -- --auto-tls=true 2>/dev/null ; echo exit_code=$?
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
# Get the pod name in the openshift-etcd namespace
|
||||
POD_NAME=$(oc get pods -n openshift-etcd -l app=etcd --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching file found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-etcd -c etcd "$POD_NAME" -- ps -o command= -C etcd | grep -- --auto-tls=true 2>/dev/null ; echo exit_code=$?
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -67,22 +80,23 @@ groups:
|
||||
op: eq
|
||||
value: "1"
|
||||
remediation: |
|
||||
This setting is managed by the cluster etcd operator. No remediation required.e
|
||||
This setting is managed by the cluster etcd operator. No remediation required.
|
||||
scored: false
|
||||
|
||||
- id: 2.4
|
||||
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are set as appropriate (Manual)"
|
||||
audit: |
|
||||
# For --peer-cert-file
|
||||
for i in $(oc get pods -oname -n openshift-etcd)
|
||||
do
|
||||
oc exec -n openshift-etcd -c etcd $i -- ps -o command= -C etcd | sed 's/.*\(--peer-cert-file=[^ ]*\).*/\1/'
|
||||
done 2>/dev/null
|
||||
# For --peer-key-file
|
||||
for i in $(oc get pods -oname -n openshift-etcd)
|
||||
do
|
||||
oc exec -n openshift-etcd -c etcd $i -- ps -o command= -C etcd | sed 's/.*\(--peer-key-file=[^ ]*\).*/\1/'
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
# Get the pod name in the openshift-etcd namespace
|
||||
POD_NAME=$(oc get pods -n openshift-etcd -l app=etcd --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching file found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-etcd -c etcd "$POD_NAME" -- ps -o command= -C etcd | sed 's/.*\(--peer-cert-file=[^ ]*\).*/\1/'
|
||||
oc exec -n openshift-etcd -c etcd "$POD_NAME" -- ps -o command= -C etcd | sed 's/.*\(--peer-key-file=[^ ]*\).*/\1/'
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -97,10 +111,16 @@ groups:
|
||||
- id: 2.5
|
||||
text: "Ensure that the --peer-client-cert-auth argument is set to true (Manual)"
|
||||
audit: |
|
||||
for i in $(oc get pods -oname -n openshift-etcd)
|
||||
do
|
||||
oc exec -n openshift-etcd -c etcd $i -- ps -o command= -C etcd | sed 's/.*\(--peer-client-cert-auth=[^ ]*\).*/\1/'
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
# Get the pod name in the openshift-etcd namespace
|
||||
POD_NAME=$(oc get pods -n openshift-etcd -l app=etcd --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching file found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-etcd -c etcd "$POD_NAME" -- ps -o command= -C etcd | sed 's/.*\(--peer-client-cert-auth=[^ ]*\).*/\1/'
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -116,10 +136,16 @@ groups:
|
||||
text: "Ensure that the --peer-auto-tls argument is not set to true (Manual)"
|
||||
audit: |
|
||||
# Returns 0 if found, 1 if not found
|
||||
for i in $(oc get pods -oname -n openshift-etcd)
|
||||
do
|
||||
oc exec -n openshift-etcd -c etcd $i -- ps -o command= -C etcd | grep -- --peer-auto-tls=true 2>/dev/null ; echo exit_code=$?
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
# Get the pod name in the openshift-etcd namespace
|
||||
POD_NAME=$(oc get pods -n openshift-etcd -l app=etcd --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching file found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-etcd -c etcd "$POD_NAME" -- ps -o command= -C etcd | grep -- --peer-auto-tls=true 2>/dev/null ; echo exit_code=$?
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -134,14 +160,17 @@ groups:
|
||||
- id: 2.7
|
||||
text: "Ensure that a unique Certificate Authority is used for etcd (Manual)"
|
||||
audit: |
|
||||
for i in $(oc get pods -oname -n openshift-etcd)
|
||||
do
|
||||
oc exec -n openshift-etcd -c etcd $i -- ps -o command= -C etcd | sed 's/.*\(--trusted-ca-file=[^ ]*\).*/\1/'
|
||||
done 2>/dev/null
|
||||
for i in $(oc get pods -oname -n openshift-etcd)
|
||||
do
|
||||
oc exec -n openshift-etcd -c etcd $i -- ps -o command= -C etcd | sed 's/.*\(--peer-trusted-ca-file=[^ ]*\).*/\1/'
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
# Get the pod name in the openshift-etcd namespace
|
||||
POD_NAME=$(oc get pods -n openshift-etcd -l app=etcd --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching file found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-etcd -c etcd "$POD_NAME" -- ps -o command= -C etcd | sed 's/.*\(--trusted-ca-file=[^ ]*\).*/\1/'
|
||||
oc exec -n openshift-etcd -c etcd "$POD_NAME" -- ps -o command= -C etcd | sed 's/.*\(--peer-trusted-ca-file=[^ ]*\).*/\1/'
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
|
||||
@@ -11,10 +11,18 @@ groups:
|
||||
- id: 1.1.1
|
||||
text: "Ensure that the API server pod specification file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
for i in $( oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver -o name )
|
||||
do
|
||||
oc exec -n openshift-kube-apiserver $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/kube-apiserver-pod.yaml;
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-apiserver namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-kube-apiserver "$POD_NAME" -- stat -c "$POD_NAME %n permissions=%a" /etc/kubernetes/static-pod-resources/kube-apiserver-pod.yaml
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -29,11 +37,18 @@ groups:
|
||||
- id: 1.1.2
|
||||
text: "Ensure that the API server pod specification file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
for i in $( oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver -o name )
|
||||
do
|
||||
oc exec -n openshift-kube-apiserver $i -- \
|
||||
stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/kube-apiserver-pod.yaml
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-apiserver namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-kube-apiserver "$POD_NAME" -- stat -c "$POD_NAME %n %U:%G" /etc/kubernetes/static-pod-resources/kube-apiserver-pod.yaml
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -45,10 +60,18 @@ groups:
|
||||
- id: 1.1.3
|
||||
text: "Ensure that the controller manager pod specification file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
for i in $( oc get pods -n openshift-kube-controller-manager -o name -l app=kube-controller-manager)
|
||||
do
|
||||
oc exec -n openshift-kube-controller-manager $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/kube-controller-manager-pod.yaml;
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-controller-manager namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-kube-controller-manager "$POD_NAME" -- stat -c "$POD_NAME %n permissions=%a" /etc/kubernetes/static-pod-resources/kube-controller-manager-pod.yaml
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -63,11 +86,18 @@ groups:
|
||||
- id: 1.1.4
|
||||
text: "Ensure that the controller manager pod specification file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
for i in $( oc get pods -n openshift-kube-controller-manager -o name -l app=kube-controller-manager)
|
||||
do
|
||||
oc exec -n openshift-kube-controller-manager $i -- \
|
||||
stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/kube-controller-manager-pod.yaml
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-controller-manager namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-kube-controller-manager "$POD_NAME" -- stat -c "$POD_NAME %n %U:%G" /etc/kubernetes/static-pod-resources/kube-controller-manager-pod.yaml
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -79,10 +109,18 @@ groups:
|
||||
- id: 1.1.5
|
||||
text: "Ensure that the scheduler pod specification file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
for i in $( oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name )
|
||||
do
|
||||
oc exec -n openshift-kube-scheduler $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/kube-scheduler-pod.yaml;
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-scheduler namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-kube-scheduler "$POD_NAME" -- stat -c "$POD_NAME %n permissions=%a" /etc/kubernetes/static-pod-resources/kube-scheduler-pod.yaml
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -97,11 +135,18 @@ groups:
|
||||
- id: 1.1.6
|
||||
text: "Ensure that the scheduler pod specification file ownership is set to root:root (Manual))"
|
||||
audit: |
|
||||
for i in $( oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name )
|
||||
do
|
||||
oc exec -n openshift-kube-scheduler $i -- \
|
||||
stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/kube-scheduler-pod.yaml
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-scheduler namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-kube-scheduler "$POD_NAME" -- stat -c "$POD_NAME %n %U:%G" /etc/kubernetes/static-pod-resources/kube-scheduler-pod.yaml
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -113,10 +158,18 @@ groups:
|
||||
- id: 1.1.7
|
||||
text: "Ensure that the etcd pod specification file permissions are set to 644 or more restrictive (Manual))"
|
||||
audit: |
|
||||
for i in $( oc get pods -n openshift-etcd -l app=etcd -o name | grep etcd )
|
||||
do
|
||||
oc rsh -n openshift-etcd $i stat -c "$i %n permissions=%a" /etc/kubernetes/manifests/etcd-pod.yaml
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-etcd namespace
|
||||
POD_NAME=$(oc get pods -n openshift-etcd -l app=etcd --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc rsh -n openshift-etcd "$POD_NAME" stat -c "$POD_NAME %n permissions=%a" /etc/kubernetes/manifests/etcd-pod.yaml
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -131,10 +184,18 @@ groups:
|
||||
- id: 1.1.8
|
||||
text: "Ensure that the etcd pod specification file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
for i in $( oc get pods -n openshift-etcd -l app=etcd -o name | grep etcd )
|
||||
do
|
||||
oc rsh -n openshift-etcd $i stat -c "$i %n %U:%G" /etc/kubernetes/manifests/etcd-pod.yaml
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-etcd namespace
|
||||
POD_NAME=$(oc get pods -n openshift-etcd -l app=etcd --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc rsh -n openshift-etcd "$POD_NAME" stat -c "$POD_NAME %n %U:%G" /etc/kubernetes/manifests/etcd-pod.yaml
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -146,16 +207,41 @@ groups:
|
||||
- id: 1.1.9
|
||||
text: "Ensure that the Container Network Interface file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
# For CNI multus
|
||||
for i in $(oc get pods -n openshift-multus -l app=multus -oname); do oc exec -n openshift-multus $i -- /bin/bash -c "stat -c \"$i %n permissions=%a\" /host/etc/cni/net.d/*.conf"; done 2>/dev/null
|
||||
for i in $(oc get pods -n openshift-multus -l app=multus -oname); do oc exec -n openshift-multus $i -- /bin/bash -c "stat -c \"$i %n permissions=%a\" /host/var/run/multus/cni/net.d/*.conf"; done 2>/dev/null
|
||||
# Get the pod name in the openshift-multus namespace
|
||||
POD_NAME=$(oc get pods -n openshift-multus -l app=multus --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-multus "$POD_NAME" -- /bin/bash -c "stat -c \"$i %n permissions=%a\" /host/etc/cni/net.d/*.conf"; 2>/dev/null
|
||||
oc exec -n openshift-multus "$POD_NAME" -- /bin/bash -c "stat -c \"$i %n permissions=%a\" /host/var/run/multus/cni/net.d/*.conf"; 2>/dev/null
|
||||
fi
|
||||
# For SDN pods
|
||||
for i in $(oc get pods -n openshift-sdn -l app=sdn -oname); do oc exec -n openshift-sdn $i -- find /var/lib/cni/networks/openshift-sdn -type f -exec stat -c "$i %n permissions=%a" {} \;; done 2>/dev/null
|
||||
for i in $(oc get pods -n openshift-sdn -l app=sdn -oname); do oc exec -n openshift-sdn $i -- find /var/run/openshift-sdn -type f -exec stat -c "$i %n permissions=%a" {} \;; done 2>/dev/null
|
||||
POD_NAME=$(oc get pods -n openshift-sdn -l app=sdn --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-sdn "$POD_NAME" -- find /var/lib/cni/networks/openshift-sdn -type f -exec stat -c "$i %n permissions=%a" {} \; 2>/dev/null
|
||||
oc exec -n openshift-sdn "$POD_NAME" -- find /var/run/openshift-sdn -type f -exec stat -c "$i %n permissions=%a" {} \; 2>/dev/null
|
||||
fi
|
||||
|
||||
# For OVS pods
|
||||
for i in $(oc get pods -n openshift-sdn -l app=ovs -oname); do oc exec -n openshift-sdn $i -- find /var/run/openvswitch -type f -exec stat -c "$i %n permissions=%a" {} \;; done 2>/dev/null
|
||||
for i in $(oc get pods -n openshift-sdn -l app=ovs -oname); do oc exec -n openshift-sdn $i -- find /etc/openvswitch -type f -exec stat -c "$i %n permissions=%a" {} \;; done 2>/dev/null
|
||||
for i in $(oc get pods -n openshift-sdn -l app=ovs -oname); do oc exec -n openshift-sdn $i -- find /run/openvswitch -type f -exec stat -c "$i %n permissions=%a" {} \;; done 2>/dev/null
|
||||
POD_NAME=$(oc get pods -n openshift-sdn -l app=ovs --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-sdn "$POD_NAME" -- find /var/run/openvswitch -type f -exec stat -c "$i %n permissions=%a" {} \; 2>/dev/null
|
||||
oc exec -n openshift-sdn "$POD_NAME" -- find /etc/openvswitch -type f -exec stat -c "$i %n permissions=%a" {} \; 2>/dev/null
|
||||
oc exec -n openshift-sdn "$POD_NAME" -- find /run/openvswitch -type f -exec stat -c "$i %n permissions=%a" {} \; 2>/dev/null
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -170,17 +256,40 @@ groups:
|
||||
- id: 1.1.10
|
||||
text: "Ensure that the Container Network Interface file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
# For CNI multus
|
||||
for i in $(oc get pods -n openshift-multus -l app=multus -oname); do oc exec -n openshift-multus $i -- /bin/bash -c "stat -c \""$i %n %U:%G\" /host/etc/cni/net.d/*.conf"; done 2>/dev/null
|
||||
for i in $(oc get pods -n openshift-multus -l app=multus -oname); do oc exec -n openshift-multus $i -- /bin/bash -c "stat -c \""$i %n %U:%G\" /host/var/run/multus/cni/net.d/*.conf"; done 2>/dev/null
|
||||
# Get the pod name in the openshift-multus namespace
|
||||
POD_NAME=$(oc get pods -n openshift-multus -l app=multus --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-multus "$POD_NAME" -- /bin/bash -c "stat -c '$i %n %U:%G' /host/etc/cni/net.d/*.conf" 2>/dev/null
|
||||
oc exec -n openshift-multus $i -- /bin/bash -c "stat -c '$i %n %U:%G' /host/var/run/multus/cni/net.d/*.conf" 2>/dev/null
|
||||
fi
|
||||
# For SDN pods
|
||||
for i in $(oc get pods -n openshift-sdn -l app=sdn -oname); do oc exec -n openshift-sdn $i -- find /var/lib/cni/networks/openshift-sdn -type f -exec stat -c "$i %n %U:%G" {} \;; done 2>/dev/null
|
||||
for i in $(oc get pods -n openshift-sdn -l app=sdn -oname); do oc exec -n openshift-sdn $i -- find /var/run/openshift-sdn -type f -exec stat -c "$i %n %U:%G"{} \;; done 2>/dev/null
|
||||
POD_NAME=$(oc get pods -n openshift-sdn -l app=sdn --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-sdn "$POD_NAME" -- find /var/lib/cni/networks/openshift-sdn -type f -exec stat -c "$i %n %U:%G" {} \; 2>/dev/null
|
||||
oc exec -n openshift-sdn "$POD_NAME" -- find /var/run/openshift-sdn -type f -exec stat -c "$i %n %U:%G" {} \; 2>/dev/null
|
||||
fi
|
||||
# For OVS pods in 4.5
|
||||
for i in $(oc get pods -n openshift-sdn -l app=ovs -oname); do oc exec -n openshift-sdn $i -- find /var/run/openvswitch -type f -exec stat -c "$i %n %U:%G" {} \;; done 2>/dev/null
|
||||
for i in $(oc get pods -n openshift-sdn -l app=ovs -oname); do oc exec -n openshift-sdn $i -- find /etc/openvswitch -type f -exec stat -c "$i %n %U:%G" {} \;; done 2>/dev/null
|
||||
for i in $(oc get pods -n openshift-sdn -l app=ovs -oname); do oc exec -n openshift-sdn $i -- find /run/openvswitch -type f -exec stat -c "$i %n %U:%G" {} \;; done 2>/dev/null
|
||||
# For OVS pods in 4.6 TBD
|
||||
POD_NAME=$(oc get pods -n openshift-sdn -l app=ovs --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-sdn "$POD_NAME" -- find /var/run/openvswitch -type f -exec stat -c "$i %n %U:%G" {} \; 2>/dev/null
|
||||
oc exec -n openshift-sdn "$POD_NAME" -- find /etc/openvswitch -type f -exec stat -c "$i %n %U:%G" {} \; 2>/dev/null
|
||||
oc exec -n openshift-sdn "$POD_NAME" -- find /run/openvswitch -type f -exec stat -c "$i %n %U:%G" {} \; 2>/dev/null
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -192,7 +301,18 @@ groups:
|
||||
- id: 1.1.11
|
||||
text: "Ensure that the etcd data directory permissions are set to 700 or more restrictive (Manual)"
|
||||
audit: |
|
||||
for i in $(oc get pods -n openshift-etcd -l app=etcd -oname); do oc exec -n openshift-etcd -c etcd $i -- stat -c "$i %n permissions=%a" /var/lib/etcd/member; done
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-etcd namespace
|
||||
POD_NAME=$(oc get pods -n openshift-etcd -l app=etcd --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-etcd "$POD_NAME" -- stat -c "$POD_NAME %n permissions=%a" /var/lib/etcd/member
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -207,7 +327,18 @@ groups:
|
||||
- id: 1.1.12
|
||||
text: "Ensure that the etcd data directory ownership is set to etcd:etcd (Manual)"
|
||||
audit: |
|
||||
for i in $(oc get pods -n openshift-etcd -l app=etcd -oname); do oc exec -n openshift-etcd -c etcd $i -- stat -c "$i %n %U:%G" /var/lib/etcd/member; done
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-etcd namespace
|
||||
POD_NAME=$(oc get pods -n openshift-etcd -l app=etcd --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-etcd "$POD_NAME" -- stat -c "$POD_NAME %n %U:%G" /var/lib/etcd/member
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -219,10 +350,8 @@ groups:
|
||||
- id: 1.1.13
|
||||
text: "Ensure that the admin.conf file permissions are set to 644 or more restrictive (Manual))"
|
||||
audit: |
|
||||
for i in $(oc get nodes -o name)
|
||||
do
|
||||
oc debug $i -- chroot /host stat -c "$i %n permissions=%a" /etc/kubernetes/kubeconfig
|
||||
done 2>/dev/null
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host stat -c "$NODE_NAME %n permissions=%a" /etc/kubernetes/kubeconfig 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -237,10 +366,8 @@ groups:
|
||||
- id: 1.1.14
|
||||
text: "Ensure that the admin.conf file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
for i in $(oc get nodes -o name)
|
||||
do
|
||||
oc debug $i -- chroot /host stat -c "$i %n %U:%G" /etc/kubernetes/kubeconfig
|
||||
done 2>/dev/null
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host stat -c "$NODE_NAME %n %U:%G" /etc/kubernetes/kubeconfig 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -252,10 +379,18 @@ groups:
|
||||
- id: 1.1.15
|
||||
text: "Ensure that the scheduler.conf file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
for i in $(oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name)
|
||||
do
|
||||
oc exec -n openshift-kube-scheduler $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/configmaps/scheduler-kubeconfig/kubeconfig
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-scheduler namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-kube-scheduler "$POD_NAME" -- stat -c "$POD_NAME %n permissions=%a" /etc/kubernetes/static-pod-resources/configmaps/scheduler-kubeconfig/kubeconfig
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -270,10 +405,18 @@ groups:
|
||||
- id: 1.1.16
|
||||
text: "Ensure that the scheduler.conf file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
for i in $(oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name)
|
||||
do
|
||||
oc exec -n openshift-kube-scheduler $i -- stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/configmaps/scheduler-kubeconfig/kubeconfig
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-scheduler namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-kube-scheduler "$POD_NAME" -- stat -c "$POD_NAME %n %U:%G" /etc/kubernetes/static-pod-resources/configmaps/scheduler-kubeconfig/kubeconfig
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -285,10 +428,18 @@ groups:
|
||||
- id: 1.1.17
|
||||
text: "Ensure that the controller-manager.conf file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
for i in $(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager -o name)
|
||||
do
|
||||
oc exec -n openshift-kube-controller-manager $i -- stat -c "$i %n permissions=%a" /etc/kubernetes/static-pod-resources/configmaps/controller-manager-kubeconfig/kubeconfig
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-controller-manager namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-kube-controller-manager "$POD_NAME" -- stat -c "$POD_NAME %n permissions=%a" /etc/kubernetes/static-pod-resources/configmaps/controller-manager-kubeconfig/kubeconfig
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -303,10 +454,18 @@ groups:
|
||||
- id: 1.1.18
|
||||
text: "Ensure that the controller-manager.conf file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
for i in $(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager -o name)
|
||||
do
|
||||
oc exec -n openshift-kube-controller-manager $i -- stat -c "$i %n %U:%G" /etc/kubernetes/static-pod-resources/configmaps/controller-manager-kubeconfig/kubeconfig
|
||||
done 2>/dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-controller-manager namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-controller-manager -l app=kube-controller-manager --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-kube-controller-manager "$POD_NAME" -- stat -c "$POD_NAME %n %U:%G" /etc/kubernetes/static-pod-resources/configmaps/controller-manager-kubeconfig/kubeconfig
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -319,15 +478,22 @@ groups:
|
||||
text: "Ensure that the Kubernetes PKI directory and file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
# Should return root:root for all files and directories
|
||||
for i in $(oc -n openshift-kube-apiserver get pod -l app=openshift-kube-apiserver -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
# echo $i static-pod-certs
|
||||
oc exec -n openshift-kube-apiserver $i -c kube-apiserver -- find /etc/kubernetes/static-pod-certs -type d -wholename '*/secrets*' -exec stat -c "$i %n %U:%G" {} \;
|
||||
oc exec -n openshift-kube-apiserver $i -c kube-apiserver -- find /etc/kubernetes/static-pod-certs -type f -wholename '*/secrets*' -exec stat -c "$i %n %U:%G" {} \;
|
||||
# echo $i static-pod-resources
|
||||
oc exec -n openshift-kube-apiserver $i -c kube-apiserver -- find /etc/kubernetes/static-pod-resources -type d -wholename '*/secrets*' -exec stat -c "$i %n %U:%G" {} \;
|
||||
oc exec -n openshift-kube-apiserver $i -c kube-apiserver -- find /etc/kubernetes/static-pod-resources -type f -wholename '*/secrets*' -exec stat -c "$i %n %U:%G" {} \;
|
||||
done
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-controller-manager namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# echo $i static-pod-certs
|
||||
oc exec -n openshift-kube-apiserver "$POD_NAME" -c kube-apiserver -- find /etc/kubernetes/static-pod-certs -type d -wholename '*/secrets*' -exec stat -c "$i %n %U:%G" {} \;
|
||||
oc exec -n openshift-kube-apiserver "$POD_NAME" -c kube-apiserver -- find /etc/kubernetes/static-pod-certs -type f -wholename '*/secrets*' -exec stat -c "$i %n %U:%G" {} \;
|
||||
# echo $i static-pod-resources
|
||||
oc exec -n openshift-kube-apiserver "$POD_NAME" -c kube-apiserver -- find /etc/kubernetes/static-pod-resources -type d -wholename '*/secrets*' -exec stat -c "$i %n %U:%G" {} \;
|
||||
oc exec -n openshift-kube-apiserver "$POD_NAME" -c kube-apiserver -- find /etc/kubernetes/static-pod-resources -type f -wholename '*/secrets*' -exec stat -c "$i %n %U:%G" {} \;
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -339,11 +505,18 @@ groups:
|
||||
- id: 1.1.20
|
||||
text: "Ensure that the OpenShift PKI certificate file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
for i in $(oc -n openshift-kube-apiserver get pod -l app=openshift-kube-apiserver -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
# echo $i static-pod-certs
|
||||
oc exec -n openshift-kube-apiserver $i -c kube-apiserver -- find /etc/kubernetes/static-pod-certs -type f -wholename '*/secrets/*.crt' -exec stat -c "$i %n permissions=%a" {} \;
|
||||
done
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-apiserver namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-kube-apiserver "$POD_NAME" -c kube-apiserver -- find /etc/kubernetes/static-pod-certs -type f -wholename '*/secrets/*.crt' -exec stat -c "$POD_NAME %n permissions=%a" {} \;
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -358,11 +531,18 @@ groups:
|
||||
- id: 1.1.21
|
||||
text: "Ensure that the OpenShift PKI key file permissions are set to 600 (Manual)"
|
||||
audit: |
|
||||
for i in $(oc -n openshift-kube-apiserver get pod -l app=openshift-kube-apiserver -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
# echo $i static-pod-certs
|
||||
oc exec -n openshift-kube-apiserver $i -c kube-apiserver -- find /etc/kubernetes/static-pod-certs -type f -wholename '*/secrets/*.key' -exec stat -c "$i %n permissions=%a" {} \;
|
||||
done
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
|
||||
# Get the pod name in the openshift-kube-apiserver namespace
|
||||
POD_NAME=$(oc get pods -n openshift-kube-apiserver -l app=openshift-kube-apiserver --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-kube-apiserver "$POD_NAME" -c kube-apiserver -- find /etc/kubernetes/static-pod-certs -type f -wholename '*/secrets/*.key' -exec stat -c "$POD_NAME %n permissions=%a" {} \;
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -532,11 +712,9 @@ groups:
|
||||
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.apiServerArguments'
|
||||
oc get kubeapiservers.operator.openshift.io cluster -o json | jq '.spec.observedConfig.apiServerArguments'
|
||||
# For OCP 4.5 and earlier verify that authorization-mode is not used
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host cat /etc/kubernetes/kubelet.conf | grep authorization-mode
|
||||
oc debug node/${node} -- chroot /host ps -aux | grep kubelet | grep authorization-mode
|
||||
done
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host cat /etc/kubernetes/kubelet.conf | grep authorization-mode 2> /dev/null
|
||||
oc debug node/$NODE_NAME -- chroot /host ps -aux | grep kubelet | grep authorization-mode 2> /dev/null
|
||||
#Check that no overrides are configured
|
||||
oc get kubeapiservers.operator.openshift.io cluster -o json | jq -r '.spec.unsupportedConfigOverrides'
|
||||
audit_config: |
|
||||
@@ -864,7 +1042,6 @@ groups:
|
||||
remediation: |
|
||||
Follow the documentation for log forwarding. Forwarding logs to third party systems
|
||||
https://docs.openshift.com/container-platform/4.5/logging/cluster-logging-external.html
|
||||
|
||||
scored: false
|
||||
|
||||
- id: 1.2.24
|
||||
@@ -1070,6 +1247,12 @@ groups:
|
||||
- id: 1.2.35
|
||||
text: "Ensure that the API Server only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
type: manual
|
||||
audit: |
|
||||
# verify cipher suites
|
||||
oc get cm -n openshift-authentication v4-0-config-system-cliconfig -o jsonpath='{.data.v4\-0\-config\-system\-cliconfig}' | jq .servingInfo
|
||||
oc get kubeapiservers.operator.openshift.io cluster -o json |jq.spec.observedConfig.servingInfo
|
||||
oc get openshiftapiservers.operator.openshift.io cluster -o json |jq.spec.observedConfig.servingInfo
|
||||
oc describe --namespace=openshift-ingress-operator ingresscontroller/default
|
||||
remediation: |
|
||||
Verify that the tlsSecurityProfile is set to the value you chose.
|
||||
Note: The HAProxy Ingress controller image does not support TLS 1.3
|
||||
|
||||
@@ -11,11 +11,8 @@ groups:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the kubelet service file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: |
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host stat -c "$node %n permissions=%a" /etc/systemd/system/kubelet.service
|
||||
done 2> /dev/null
|
||||
use_multiple_values: true
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host stat -c "$NODE_NAME %n permissions=%a" /etc/systemd/system/kubelet.service 2> /dev/null
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
@@ -30,11 +27,8 @@ groups:
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
audit: |
|
||||
# Should return root:root for each node
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host stat -c "$node %n %U:%G" /etc/systemd/system/kubelet.service
|
||||
done 2> /dev/null
|
||||
use_multiple_values: true
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host stat -c "$NODE_NAME %n %U:%G" /etc/systemd/system/kubelet.service 2> /dev/null
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
@@ -45,11 +39,17 @@ groups:
|
||||
- id: 4.1.3
|
||||
text: "If proxy kubeconfig file exists ensure permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
for i in $(oc get pods -n openshift-sdn -l app=sdn -oname)
|
||||
do
|
||||
oc exec -n openshift-sdn $i -- stat -Lc "$i %n permissions=%a" /config/kube-proxy-config.yaml
|
||||
done 2> /dev/null
|
||||
use_multiple_values: true
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
# Get the pod name in the openshift-sdn namespace
|
||||
POD_NAME=$(oc get pods -n openshift-sdn -l app=sdn --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-sdn "$POD_NAME" -- stat -Lc "$i %n permissions=%a" /config/kube-proxy-config.yaml 2>/dev/null
|
||||
fi
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
@@ -65,10 +65,17 @@ groups:
|
||||
- id: 4.1.4
|
||||
text: "Ensure that the proxy kubeconfig file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
for i in $(oc get pods -n openshift-sdn -l app=sdn -oname)
|
||||
do
|
||||
oc exec -n openshift-sdn $i -- stat -Lc "$i %n %U:%G" /config/kube-proxy-config.yaml
|
||||
done 2> /dev/null
|
||||
# Get the node name where the pod is running
|
||||
NODE_NAME=$(oc get pod "$HOSTNAME" -o=jsonpath='{.spec.nodeName}')
|
||||
# Get the pod name in the openshift-sdn namespace
|
||||
POD_NAME=$(oc get pods -n openshift-sdn -l app=sdn --field-selector spec.nodeName="$NODE_NAME" -o jsonpath='{.items[0].metadata.name}' 2>/dev/null)
|
||||
|
||||
if [ -z "$POD_NAME" ]; then
|
||||
echo "No matching pods found on the current node."
|
||||
else
|
||||
# Execute the stat command
|
||||
oc exec -n openshift-sdn "$POD_NAME" -- stat -Lc "$i %n %U:%G" /config/kube-proxy-config.yaml 2>/dev/null
|
||||
fi
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
bin_op: or
|
||||
@@ -82,10 +89,8 @@ groups:
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: |
|
||||
# Check permissions
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host stat -c "$node %n permissions=%a" /etc/kubernetes/kubelet.conf
|
||||
done 2> /dev/null
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host stat -c "$NODE_NAME %n permissions=%a" /etc/kubernetes/kubelet.conf 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -100,10 +105,8 @@ groups:
|
||||
- id: 4.1.6
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host stat -c "$node %n %U:%G" /etc/kubernetes/kubelet.conf
|
||||
done 2> /dev/null
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host stat -c "$NODE_NAME %n %U:%G" /etc/kubernetes/kubelet.conf 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -115,10 +118,8 @@ groups:
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: |
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host stat -c "$node %n permissions=%a" /etc/kubernetes/kubelet-ca.crt
|
||||
done 2> /dev/null
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host stat -c "$NODE_NAME %n permissions=%a" /etc/kubernetes/kubelet-ca.crt 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -133,10 +134,8 @@ groups:
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Automated)"
|
||||
audit: |
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host stat -c "$node %n %U:%G" /etc/kubernetes/kubelet-ca.crt
|
||||
done 2> /dev/null
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host stat -c "$NODE_NAME %n %U:%G" /etc/kubernetes/kubelet-ca.crt 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -148,10 +147,8 @@ groups:
|
||||
- id: 4.1.9
|
||||
text: "Ensure that the kubelet --config configuration file has permissions set to 644 or more restrictive (Automated)"
|
||||
audit: |
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host stat -c "$node %n permissions=%a" /var/lib/kubelet/kubeconfig
|
||||
done 2> /dev/null
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host stat -c "$NODE_NAME %n permissions=%a" /var/lib/kubelet/kubeconfig 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -166,10 +163,8 @@ groups:
|
||||
- id: 4.1.10
|
||||
text: "Ensure that the kubelet configuration file ownership is set to root:root (Automated)"
|
||||
audit: |
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host stat -c "$node %n %U:%G" /var/lib/kubelet/kubeconfig
|
||||
done 2> /dev/null
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host stat -c "$NODE_NAME %n %U:%G" /var/lib/kubelet/kubeconfig 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -184,10 +179,8 @@ groups:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: |
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host grep -B4 -A1 anonymous /etc/kubernetes/kubelet.conf
|
||||
done
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host grep -B4 -A1 anonymous /etc/kubernetes/kubelet.conf 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -205,10 +198,8 @@ groups:
|
||||
audit: |
|
||||
POD=$(oc -n openshift-kube-apiserver get pod -l app=openshift-kube-apiserver -o jsonpath='{.items[0].metadata.name}')
|
||||
TOKEN=$(oc whoami -t)
|
||||
for name in $(oc get nodes -ojsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc exec -n openshift-kube-apiserver $POD -- curl -sS https://172.25.0.1/api/v1/nodes/$name/proxy/configz -k -H "Authorization:Bearer $TOKEN" | jq -r '.kubeletconfig.authorization.mode'
|
||||
done
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc exec -n openshift-kube-apiserver $POD -- curl -sS https://172.25.0.1/api/v1/nodes/$NODE_NAME/proxy/configz -k -H "Authorization:Bearer $TOKEN" | jq -r '.kubeletconfig.authorization.mode' 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
@@ -220,17 +211,12 @@ groups:
|
||||
- id: 4.2.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: |
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host grep clientCAFile /etc/kubernetes/kubelet.conf
|
||||
done 2> /dev/null
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host grep clientCAFile /etc/kubernetes/kubelet.conf 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "clientCAFile"
|
||||
compare:
|
||||
op: eq
|
||||
value: "/etc/kubernetes/kubelet-ca.crt"
|
||||
- flag: '"clientCAFile": "/etc/kubernetes/kubelet-ca.crt"'
|
||||
remediation: |
|
||||
None required. Changing the clientCAFile value is unsupported.
|
||||
scored: true
|
||||
@@ -258,18 +244,13 @@ groups:
|
||||
- id: 4.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Automated)"
|
||||
audit: |
|
||||
# Should return 1 for each node
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host ps -ef | grep kubelet | grep streaming-connection-idle-timeout
|
||||
echo exit_code=$?
|
||||
done 2>/dev/null
|
||||
# Should return 1 for each node
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host grep streamingConnectionIdleTimeout /etc/kubernetes/kubelet.conf
|
||||
echo exit_code=$?
|
||||
done 2>/dev/null
|
||||
# Should return 1 for node
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/${NODE_NAME} -- chroot /host ps -ef | grep kubelet | grep streaming-connection-idle-timeout 2> /dev/null
|
||||
echo exit_code=$?
|
||||
# Should return 1 for node
|
||||
oc debug node/${NODE_NAME} -- chroot /host grep streamingConnectionIdleTimeout /etc/kubernetes/kubelet.conf 2> /dev/null
|
||||
echo exit_code=$?
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
bin_op: or
|
||||
@@ -278,6 +259,10 @@ groups:
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: streamingConnectionIdleTimeout
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0s
|
||||
- flag: "exit_code"
|
||||
compare:
|
||||
op: eq
|
||||
@@ -290,10 +275,8 @@ groups:
|
||||
- id: 4.2.6
|
||||
text: "Ensure that the --protect-kernel-defaults argument is not set (Manual)"
|
||||
audit: |
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}');
|
||||
do
|
||||
oc debug node/${node} -- chroot /host more /etc/kubernetes/kubelet.conf;
|
||||
done
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/$NODE_NAME -- chroot /host more /etc/kubernetes/kubelet.conf 2> /dev/null
|
||||
tests:
|
||||
test_items:
|
||||
- flag: protectKernelDefaults
|
||||
@@ -348,10 +331,8 @@ groups:
|
||||
- id: 4.2.9
|
||||
text: "Ensure that the kubeAPIQPS [--event-qps] argument is set to 0 or a level which ensures appropriate event capture (Manual)"
|
||||
audit: |
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}');
|
||||
do
|
||||
oc debug node/${node} -- chroot /host more /etc/kubernetes/kubelet.conf;
|
||||
done
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/${NODE_NAME} -- chroot /host cat /etc/kubernetes/kubelet.conf;
|
||||
oc get machineconfig 01-worker-kubelet -o yaml | grep --color kubeAPIQPS%3A%2050
|
||||
oc get machineconfig 01-master-kubelet -o yaml | grep --color kubeAPIQPS%3A%2050
|
||||
type: "manual"
|
||||
@@ -364,7 +345,12 @@ groups:
|
||||
- id: 4.2.10
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)"
|
||||
audit: |
|
||||
oc get configmap config -n openshift-kube-apiserver -ojson | jq -r '.data["config.yaml"]' | jq '.kubeletClientInfo'
|
||||
oc get configmap config -n openshift-kube-apiserver -o json \
|
||||
| jq -r '.data["config.yaml"]' \
|
||||
| jq -r '.apiServerArguments |
|
||||
.["kubelet-client-certificate"][0],
|
||||
.["kubelet-client-key"][0]
|
||||
'
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
@@ -379,15 +365,10 @@ groups:
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Manual)"
|
||||
audit: |
|
||||
#Verify the rotateKubeletClientCertificate feature gate is not set to false
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot /host cat /etc/kubernetes/kubelet.conf | grep RotateKubeletClientCertificate
|
||||
done 2> /dev/null
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/${NODE_NAME} -- chroot /host cat /etc/kubernetes/kubelet.conf | grep RotateKubeletClientCertificate 2> /dev/null
|
||||
# Verify the rotateCertificates argument is set to true
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot host grep rotate /etc/kubernetes/kubelet.conf;
|
||||
done 2> /dev/null
|
||||
oc debug node/${NODE_NAME} -- chroot host grep rotate /etc/kubernetes/kubelet.conf 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
bin_op: or
|
||||
@@ -410,24 +391,19 @@ groups:
|
||||
text: "Verify that the RotateKubeletServerCertificate argument is set to true (Manual)"
|
||||
audit: |
|
||||
#Verify the rotateKubeletServerCertificate feature gate is on
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}');
|
||||
do
|
||||
oc debug node/${node} -- chroot /host grep RotateKubeletServerCertificate /etc/kubernetes/kubelet.conf;
|
||||
done 2> /dev/null
|
||||
NODE_NAME=$(oc get pod $HOSTNAME -o=jsonpath='{.spec.nodeName}')
|
||||
oc debug node/${NODE_NAME} -- chroot /host grep RotateKubeletServerCertificate /etc/kubernetes/kubelet.conf 2> /dev/null
|
||||
# Verify the rotateCertificates argument is set to true
|
||||
for node in $(oc get nodes -o jsonpath='{.items[*].metadata.name}')
|
||||
do
|
||||
oc debug node/${node} -- chroot host grep rotate /etc/kubernetes/kubelet.conf;
|
||||
done 2> /dev/null
|
||||
oc debug node/${NODE_NAME} -- chroot host grep rotate /etc/kubernetes/kubelet.conf 2> /dev/null
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
- flag: rotateCertificates
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: rotateCertificates
|
||||
- flag: RotateKubeletServerCertificate
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
|
||||
@@ -11,6 +11,12 @@ groups:
|
||||
- id: 5.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Manual)"
|
||||
type: "manual"
|
||||
audit: |
|
||||
#To get a list of users and service accounts with the cluster-admin role
|
||||
oc get clusterrolebindings -o=customcolumns=NAME:.metadata.name,ROLE:.roleRef.name,SUBJECT:.subjects[*].kind |
|
||||
grep cluster-admin
|
||||
#To verity that kbueadmin is removed, no results should be returned
|
||||
oc get secrets kubeadmin -n kube-system
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
@@ -29,6 +35,15 @@ groups:
|
||||
- id: 5.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Manual)"
|
||||
type: "manual"
|
||||
audit: |
|
||||
#needs verification
|
||||
oc get roles --all-namespaces -o yaml
|
||||
for i in $(oc get roles -A -o jsonpath='{.items[*].metadata.name}'); do oc
|
||||
describe clusterrole ${i}; done
|
||||
#Retrieve the cluster roles defined in the cluster and review for wildcards
|
||||
oc get clusterroles -o yaml
|
||||
for i in $(oc get clusterroles -o jsonpath='{.items[*].metadata.name}'); do
|
||||
oc describe clusterrole ${i}; done
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
@@ -63,10 +78,7 @@ groups:
|
||||
text: "Minimize the admission of privileged containers (Manual)"
|
||||
audit: |
|
||||
# needs verification
|
||||
for i in `oc get scc --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}'`;
|
||||
do
|
||||
echo "$i"; oc describe scc $i | grep "Allow Privileged";
|
||||
done
|
||||
oc get scc -o=custom-columns=NAME:.metadata.name,allowPrivilegedContainer:.allowPrivilegedContainer
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "false"
|
||||
@@ -78,10 +90,7 @@ groups:
|
||||
- id: 5.2.2
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Manual)"
|
||||
audit: |
|
||||
for i in `oc get scc --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}'`;
|
||||
do
|
||||
echo "$i"; oc describe scc $i | grep "Allow Host PID";
|
||||
done
|
||||
oc get scc -o=custom-columns=NAME:.metadata.name,allowHostPID:.allowHostPID
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "false"
|
||||
@@ -93,10 +102,7 @@ groups:
|
||||
- id: 5.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Manual)"
|
||||
audit: |
|
||||
for i in `oc get scc --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}'`;
|
||||
do
|
||||
echo "$i"; oc describe scc $i | grep "Allow Host IPC";
|
||||
done
|
||||
oc get scc -o=custom-columns=NAME:.metadata.name,allowHostIPC:.allowHostIPC
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "false"
|
||||
@@ -108,10 +114,7 @@ groups:
|
||||
- id: 5.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Manual)"
|
||||
audit: |
|
||||
for i in `oc get scc --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}'`;
|
||||
do
|
||||
echo "$i"; oc describe scc $i | grep "Allow Host Network";
|
||||
done
|
||||
oc get scc -o=custom-columns=NAME:.metadata.name,allowHostNetwork:.allowHostNetwork
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "false"
|
||||
@@ -123,10 +126,7 @@ groups:
|
||||
- id: 5.2.5
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Manual)"
|
||||
audit: |
|
||||
for i in `oc get scc --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}'`;
|
||||
do
|
||||
echo "$i"; oc describe scc $i | grep "Allow Privilege Escalation";
|
||||
done
|
||||
oc get scc -o=custom-columns=NAME:.metadata.name,allowPrivilegeEscalation:.allowPrivilegeEscalation
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "false"
|
||||
@@ -138,18 +138,10 @@ groups:
|
||||
- id: 5.2.6
|
||||
text: "Minimize the admission of root containers (Manual)"
|
||||
audit: |
|
||||
# needs verification
|
||||
for i in `oc get scc --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}'`;
|
||||
do
|
||||
echo "$i";
|
||||
oc describe scc $i | grep "Run As User Strategy";
|
||||
done
|
||||
# needs verification # | awk 'NR>1 {gsub("map\\[type:", "", $2); gsub("\\]$", "", $2); print $1 ":" $2}'
|
||||
oc get scc -o=custom-columns=NAME:.metadata.name,runAsUser:.runAsUser.type
|
||||
#For SCCs with MustRunAs verify that the range of UIDs does not include 0
|
||||
for i in `oc get scc --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}'`;
|
||||
do
|
||||
echo "$i";
|
||||
oc describe scc $i | grep "\sUID";
|
||||
done
|
||||
oc get scc -o=custom-columns=NAME:.metadata.name,uidRangeMin:.runAsUser.uidRangeMin,uidRangeMax:.runAsUser.uidRangeMax
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
@@ -168,11 +160,7 @@ groups:
|
||||
text: "Minimize the admission of containers with the NET_RAW capability (Manual)"
|
||||
audit: |
|
||||
# needs verification
|
||||
for i in `oc get scc --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}'`;
|
||||
do
|
||||
echo "$i";
|
||||
oc describe scc $i | grep "Required Drop Capabilities";
|
||||
done
|
||||
oc get scc -o=custom-columns=NAME:.metadata.name,requiredDropCapabilities:.requiredDropCapabilities
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
@@ -213,6 +201,9 @@ groups:
|
||||
- id: 5.3.2
|
||||
text: "Ensure that all Namespaces have Network Policies defined (Manual)"
|
||||
type: "manual"
|
||||
audit: |
|
||||
#Run the following command and review the NetworkPolicy objects created in the cluster.
|
||||
oc -n all get networkpolicy
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
scored: false
|
||||
@@ -223,6 +214,10 @@ groups:
|
||||
- id: 5.4.1
|
||||
text: "Prefer using secrets as files over secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
audit: |
|
||||
#Run the following command to find references to objects which use environment variables defined from secrets.
|
||||
oc get all -o jsonpath='{range .items[?(@..secretKeyRef)]} {.kind}
|
||||
{.metadata.name} {"\n"}{end}' -A
|
||||
remediation: |
|
||||
If possible, rewrite application code to read secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
@@ -252,6 +247,10 @@ groups:
|
||||
- id: 5.7.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
audit: |
|
||||
#Run the following command and review the namespaces created in the cluster.
|
||||
oc get namespaces
|
||||
#Ensure that these namespaces are the ones you need and are adequately administered as per your requirements.
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
@@ -277,6 +276,11 @@ groups:
|
||||
- id: 5.7.4
|
||||
text: "The default namespace should not be used (Manual)"
|
||||
type: "manual"
|
||||
audit: |
|
||||
#Run this command to list objects in default namespace
|
||||
oc project default
|
||||
oc get all
|
||||
#The only entries there should be system managed resources such as the kubernetes and openshift service
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
|
||||
2
cfg/rke-cis-1.23/config.yaml
Normal file
2
cfg/rke-cis-1.23/config.yaml
Normal file
@@ -0,0 +1,2 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
46
cfg/rke-cis-1.23/controlplane.yaml
Normal file
46
cfg/rke-cis-1.23/controlplane.yaml
Normal file
@@ -0,0 +1,46 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.23"
|
||||
id: 3
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Client certificate authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be
|
||||
implemented in place of client certificates.
|
||||
scored: false
|
||||
|
||||
- id: 3.2
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that a minimal audit policy is created (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-policy-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Create an audit policy file for your cluster.
|
||||
scored: true
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the audit policy covers key security concerns (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the audit policy provided for the cluster and ensure that it covers
|
||||
at least the following areas,
|
||||
- Access to Secrets managed by the cluster. Care should be taken to only
|
||||
log Metadata for requests to Secrets, ConfigMaps, and TokenReviews, in
|
||||
order to avoid risk of logging sensitive data.
|
||||
- Modification of Pod and Deployment objects.
|
||||
- Use of `pods/exec`, `pods/portforward`, `pods/proxy` and `services/proxy`.
|
||||
For most requests, minimally logging at the Metadata level is recommended
|
||||
(the most basic level of logging).
|
||||
scored: false
|
||||
149
cfg/rke-cis-1.23/etcd.yaml
Normal file
149
cfg/rke-cis-1.23/etcd.yaml
Normal file
@@ -0,0 +1,149 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.23"
|
||||
id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
type: "etcd"
|
||||
groups:
|
||||
- id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
checks:
|
||||
- id: 2.1
|
||||
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--cert-file"
|
||||
env: "ETCD_CERT_FILE"
|
||||
set: true
|
||||
- flag: "--key-file"
|
||||
env: "ETCD_KEY_FILE"
|
||||
set: true
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure TLS encryption.
|
||||
Then, edit the etcd pod specification file /etc/kubernetes/manifests/etcd.yaml
|
||||
on the master node and set the below parameters.
|
||||
--cert-file=</path/to/ca-file>
|
||||
--key-file=</path/to/key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.2
|
||||
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--client-cert-auth"
|
||||
set: true
|
||||
- flag: "--client-cert-auth"
|
||||
env: "ETCD_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--client-cert-auth="true"
|
||||
scored: true
|
||||
|
||||
- id: 2.3
|
||||
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --auto-tls parameter or set it to false.
|
||||
--auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.4
|
||||
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are
|
||||
set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--peer-cert-file"
|
||||
env: "ETCD_PEER_CERT_FILE"
|
||||
set: true
|
||||
- flag: "--peer-key-file"
|
||||
env: "ETCD_PEER_KEY_FILE"
|
||||
set: true
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure peer TLS encryption as appropriate
|
||||
for your etcd cluster.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameters.
|
||||
--peer-client-file=</path/to/peer-cert-file>
|
||||
--peer-key-file=</path/to/peer-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.5
|
||||
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--peer-client-cert-auth"
|
||||
set: true
|
||||
- flag: "--peer-client-cert-auth"
|
||||
env: "ETCD_PEER_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--peer-client-cert-auth=true
|
||||
scored: true
|
||||
|
||||
- id: 2.6
|
||||
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --peer-auto-tls parameter or set it to false.
|
||||
--peer-auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.7
|
||||
text: "Ensure that a unique Certificate Authority is used for etcd (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--trusted-ca-file"
|
||||
env: "ETCD_TRUSTED_CA_FILE"
|
||||
set: true
|
||||
remediation: |
|
||||
[Manual test]
|
||||
Follow the etcd documentation and create a dedicated certificate authority setup for the
|
||||
etcd service.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameter.
|
||||
--trusted-ca-file=</path/to/ca-file>
|
||||
scored: true
|
||||
1011
cfg/rke-cis-1.23/master.yaml
Normal file
1011
cfg/rke-cis-1.23/master.yaml
Normal file
File diff suppressed because it is too large
Load Diff
466
cfg/rke-cis-1.23/node.yaml
Normal file
466
cfg/rke-cis-1.23/node.yaml
Normal file
@@ -0,0 +1,466 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.23"
|
||||
id: 4
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the kubelet service file permissions are set to 644 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c permissions=%a $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Cluster provisioned by RKE doesn’t require or maintain a configuration file for the kubelet service.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Cluster provisioned by RKE doesn’t require or maintain a configuration file for the kubelet service.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
text: "If proxy kubeconfig file exists ensure permissions are set to 644 or more restrictive (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c permissions=%a $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
set: true
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 644 $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.4
|
||||
text: "If proxy kubeconfig file exists ensure ownership is set to root:root (Manual)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c %U:%G $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e /node$kubeletkubeconfig; then stat -c permissions=%a /node$kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 644 $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e /node$kubeletkubeconfig; then stat -c %U:%G /node$kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 644 or more restrictive (Automated)"
|
||||
audit: "stat -c permissions=%a /node/etc/kubernetes/ssl/kube-ca.pem"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Run the following command to modify the file permissions of the
|
||||
--client-ca-file chmod 644 <filename>
|
||||
scored: true
|
||||
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Automated)"
|
||||
audit: "stat -c %U:%G /node/etc/kubernetes/ssl/kube-ca.pem"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the following command to modify the ownership of the --client-ca-file.
|
||||
chown root:root <filename>
|
||||
scored: true
|
||||
|
||||
- id: 4.1.9
|
||||
text: "Ensure that the kubelet --config configuration file has permissions set to 644 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c permissions=%a $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "644"
|
||||
remediation: |
|
||||
Clusters provisioned by RKE doesn’t require or maintain a configuration file for the kubelet.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
|
||||
Clusters provisioned by RKE doesn’t require or maintain a configuration file for the kubelet.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.10
|
||||
text: "Ensure that the kubelet --config configuration file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Clusters provisioned by RKE doesn’t require or maintain a configuration file for the kubelet.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
|
||||
Clusters provisioned by RKE doesn’t require or maintain a configuration file for the kubelet.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 4.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: '{.authentication.anonymous.enabled}'
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication: anonymous: enabled` to
|
||||
`false`.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
`--anonymous-auth=false`
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: '{.authorization.mode}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authorization.mode` to Webhook. If
|
||||
using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--authorization-mode=Webhook
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: '{.authentication.x509.clientCAFile}'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication.x509.clientCAFile` to
|
||||
the location of the client CA file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.4
|
||||
text: "Ensure that the --read-only-port argument is set to 0 (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
set: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `readOnlyPort` to 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--read-only-port=0
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `streamingConnectionIdleTimeout` to a
|
||||
value other than 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--streaming-connection-idle-timeout=5m
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.6
|
||||
text: "Ensure that the --protect-kernel-defaults argument is set to true (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --protect-kernel-defaults
|
||||
path: '{.protectKernelDefaults}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `protectKernelDefaults` to `true`.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--protect-kernel-defaults=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
System level configurations are required prior to provisioning the cluster in order for this argument to be set to true.
|
||||
scored: true
|
||||
|
||||
- id: 4.2.7
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `makeIPTablesUtilChains` to `true`.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove the --make-iptables-util-chains argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.8
|
||||
text: "Ensure that the --hostname-override argument is not set (Manual)"
|
||||
# This is one of those properties that can only be set as a command line argument.
|
||||
# To check if the property is set as expected, we need to parse the kubelet command
|
||||
# instead reading the Kubelet Configuration file.
|
||||
type: "skip"
|
||||
audit: "/bin/ps -fC $kubeletbin "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --hostname-override
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and remove the --hostname-override argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
Clusters provisioned by RKE set the --hostname-override to avoid any hostname configuration errors
|
||||
scored: false
|
||||
|
||||
- id: 4.2.9
|
||||
text: "Ensure that the --event-qps argument is set to 0 or a level which ensures appropriate event capture (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `eventRecordQPS` to an appropriate level.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.10
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Manual)"
|
||||
type: "skip"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cert-file
|
||||
path: '{.tlsCertFile}'
|
||||
- flag: --tls-private-key-file
|
||||
path: '{.tlsPrivateKeyFile}'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCertFile` to the location
|
||||
of the certificate file to use to identify this Kubelet, and `tlsPrivateKeyFile`
|
||||
to the location of the corresponding private key file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameters in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
When generating serving certificates, functionality could break in conjunction with hostname overrides which are required for certain cloud providers.
|
||||
scored: false
|
||||
|
||||
- id: 4.2.11
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to add the line `rotateCertificates` to `true` or
|
||||
remove it altogether to use the default value.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove --rotate-certificates=false argument from the KUBELET_CERTIFICATE_ARGS
|
||||
variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.12
|
||||
text: "Verify that the RotateKubeletServerCertificate argument is set to true (Manual)"
|
||||
type: "skip"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: false
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and set the below parameter in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
Clusters provisioned by RKE handles certificate rotation directly through RKE.
|
||||
scored: false
|
||||
|
||||
- id: 4.2.13
|
||||
text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cipher-suites
|
||||
path: '{range .tlsCipherSuites[:]}{}{'',''}{end}'
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCipherSuites` to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the --tls-cipher-suites parameter as follows, or to a subset of these values.
|
||||
--tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
269
cfg/rke-cis-1.23/policies.yaml
Normal file
269
cfg/rke-cis-1.23/policies.yaml
Normal file
@@ -0,0 +1,269 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.23"
|
||||
id: 5
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role :
|
||||
kubectl delete clusterrolebinding [name]
|
||||
scored: false
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize access to secrets (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to Secret objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Minimize access to create pods (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to pod objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.5
|
||||
text: "Ensure that default service accounts are not actively used. (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
||||
to the Kubernetes API server.
|
||||
Modify the configuration of each default service account to include this value
|
||||
automountServiceAccountToken: false
|
||||
scored: false
|
||||
|
||||
- id: 5.1.6
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Modify the definition of pods and service accounts which do not need to mount service
|
||||
account tokens to disable it.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.7
|
||||
text: "Avoid use of system:masters group (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.8
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Pod Security Standards"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Ensure that the cluster has at least one active policy control mechanism in place (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that either Pod Security Admission or an external policy control system is in place
|
||||
for every namespace which contains user workloads.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.2
|
||||
text: "Minimize the admission of privileged containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of privileged containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Automated)"
|
||||
type: "skip"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostPID` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Automated)"
|
||||
type: "skip"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostIPC` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.5
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Automated)"
|
||||
type: "skip"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostNetwork` containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.6
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `.spec.allowPrivilegeEscalation` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.7
|
||||
text: "Minimize the admission of root containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a policy for each namespace in the cluster, ensuring that either `MustRunAsNonRoot`
|
||||
or `MustRunAs` with the range of UIDs not including 0, is set.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.8
|
||||
text: "Minimize the admission of containers with the NET_RAW capability (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with the `NET_RAW` capability.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.9
|
||||
text: "Minimize the admission of containers with added capabilities (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that `allowedCapabilities` is not present in policies for the cluster unless
|
||||
it is set to an empty array.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.10
|
||||
text: "Minimize the admission of containers with capabilities assigned (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the use of capabilites in applications running on your cluster. Where a namespace
|
||||
contains applicaions which do not require any Linux capabities to operate consider adding
|
||||
a PSP which forbids the admission of containers which do not drop all capabilities.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.11
|
||||
text: "Minimize the admission of Windows HostProcess containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers that have `.securityContext.windowsOptions.hostProcess` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.12
|
||||
text: "Minimize the admission of HostPath volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `hostPath` volumes.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.13
|
||||
text: "Minimize the admission of containers which use HostPorts (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers which use `hostPort` sections.
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "Network Policies and CNI"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure that the CNI in use supports NetworkPolicies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If the CNI plugin in use does not support network policies, consideration should be given to
|
||||
making use of a different plugin, or finding an alternate mechanism for restricting traffic
|
||||
in the Kubernetes cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.3.2
|
||||
text: "Ensure that all Namespaces have NetworkPolicies defined (Manual)"
|
||||
type: "skip"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Prefer using Secrets as files over Secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If possible, rewrite application code to read Secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 5.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the Secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 5.5
|
||||
text: "Extensible Admission Control"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup image provenance.
|
||||
scored: false
|
||||
|
||||
- id: 5.7
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 5.7.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.2
|
||||
text: "Ensure that the seccomp profile is set to docker/default in your Pod definitions (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Use `securityContext` to enable the docker/default seccomp profile in your pod definitions.
|
||||
An example is as below:
|
||||
securityContext:
|
||||
seccompProfile:
|
||||
type: RuntimeDefault
|
||||
scored: false
|
||||
|
||||
- id: 5.7.3
|
||||
text: "Apply SecurityContext to your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply SecurityContexts to your Pods. For a
|
||||
suggested list of SecurityContexts, you may refer to the CIS Security Benchmark for Docker
|
||||
Containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.4
|
||||
text: "The default namespace should not be used (Manual)"
|
||||
type: "skip"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
scored: false
|
||||
2
cfg/rke-cis-1.24/config.yaml
Normal file
2
cfg/rke-cis-1.24/config.yaml
Normal file
@@ -0,0 +1,2 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
46
cfg/rke-cis-1.24/controlplane.yaml
Normal file
46
cfg/rke-cis-1.24/controlplane.yaml
Normal file
@@ -0,0 +1,46 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.24"
|
||||
id: 3
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Client certificate authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be
|
||||
implemented in place of client certificates.
|
||||
scored: false
|
||||
|
||||
- id: 3.2
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that a minimal audit policy is created (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-policy-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Create an audit policy file for your cluster.
|
||||
scored: true
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the audit policy covers key security concerns (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the audit policy provided for the cluster and ensure that it covers
|
||||
at least the following areas,
|
||||
- Access to Secrets managed by the cluster. Care should be taken to only
|
||||
log Metadata for requests to Secrets, ConfigMaps, and TokenReviews, in
|
||||
order to avoid risk of logging sensitive data.
|
||||
- Modification of Pod and Deployment objects.
|
||||
- Use of `pods/exec`, `pods/portforward`, `pods/proxy` and `services/proxy`.
|
||||
For most requests, minimally logging at the Metadata level is recommended
|
||||
(the most basic level of logging).
|
||||
scored: false
|
||||
149
cfg/rke-cis-1.24/etcd.yaml
Normal file
149
cfg/rke-cis-1.24/etcd.yaml
Normal file
@@ -0,0 +1,149 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.24"
|
||||
id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
type: "etcd"
|
||||
groups:
|
||||
- id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
checks:
|
||||
- id: 2.1
|
||||
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--cert-file"
|
||||
env: "ETCD_CERT_FILE"
|
||||
set: true
|
||||
- flag: "--key-file"
|
||||
env: "ETCD_KEY_FILE"
|
||||
set: true
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure TLS encryption.
|
||||
Then, edit the etcd pod specification file /etc/kubernetes/manifests/etcd.yaml
|
||||
on the master node and set the below parameters.
|
||||
--cert-file=</path/to/ca-file>
|
||||
--key-file=</path/to/key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.2
|
||||
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--client-cert-auth"
|
||||
set: true
|
||||
- flag: "--client-cert-auth"
|
||||
env: "ETCD_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--client-cert-auth="true"
|
||||
scored: true
|
||||
|
||||
- id: 2.3
|
||||
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --auto-tls parameter or set it to false.
|
||||
--auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.4
|
||||
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are
|
||||
set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--peer-cert-file"
|
||||
env: "ETCD_PEER_CERT_FILE"
|
||||
set: true
|
||||
- flag: "--peer-key-file"
|
||||
env: "ETCD_PEER_KEY_FILE"
|
||||
set: true
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure peer TLS encryption as appropriate
|
||||
for your etcd cluster.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameters.
|
||||
--peer-client-file=</path/to/peer-cert-file>
|
||||
--peer-key-file=</path/to/peer-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.5
|
||||
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--peer-client-cert-auth"
|
||||
set: true
|
||||
- flag: "--peer-client-cert-auth"
|
||||
env: "ETCD_PEER_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--peer-client-cert-auth=true
|
||||
scored: true
|
||||
|
||||
- id: 2.6
|
||||
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --peer-auto-tls parameter or set it to false.
|
||||
--peer-auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.7
|
||||
text: "Ensure that a unique Certificate Authority is used for etcd (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--trusted-ca-file"
|
||||
env: "ETCD_TRUSTED_CA_FILE"
|
||||
set: true
|
||||
remediation: |
|
||||
[Manual test]
|
||||
Follow the etcd documentation and create a dedicated certificate authority setup for the
|
||||
etcd service.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameter.
|
||||
--trusted-ca-file=</path/to/ca-file>
|
||||
scored: true
|
||||
1014
cfg/rke-cis-1.24/master.yaml
Normal file
1014
cfg/rke-cis-1.24/master.yaml
Normal file
File diff suppressed because it is too large
Load Diff
459
cfg/rke-cis-1.24/node.yaml
Normal file
459
cfg/rke-cis-1.24/node.yaml
Normal file
@@ -0,0 +1,459 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.24"
|
||||
id: 4
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the kubelet service file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c permissions=%a $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chmod 600 $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
text: "If proxy kubeconfig file exists ensure permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c permissions=%a $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
set: true
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.4
|
||||
text: "If proxy kubeconfig file exists ensure ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c %U:%G $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c permissions=%a $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c %U:%G $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c "if test -e /node/etc/kubernetes/ssl/kube-ca.pem; then stat -c permissions=%a /node/etc/kubernetes/ssl/kube-ca.pem; else echo \"File not found\"; fi"'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
- flag: "File not found"
|
||||
remediation: |
|
||||
Run the following command to modify the file permissions of the
|
||||
--client-ca-file chmod 600 <filename>
|
||||
scored: true
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c "if test -e /node/etc/kubernetes/ssl/kube-ca.pem; then stat -c %U:%G /node/etc/kubernetes/ssl/kube-ca.pem; else echo \"File not found\"; fi"'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
- flag: "File not found"
|
||||
remediation: |
|
||||
Run the following command to modify the ownership of the --client-ca-file.
|
||||
chown root:root <filename>
|
||||
scored: true
|
||||
|
||||
- id: 4.1.9
|
||||
text: "If the kubelet config.yaml configuration file is being used validate permissions set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c permissions=%a $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Cluster provisioned by RKE doesn't require or maintain a configuration file for the kubelet.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.10
|
||||
text: "If the kubelet config.yaml configuration file is being used validate file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Cluster provisioned by RKE doesn’t require or maintain a configuration file for the kubelet.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 4.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: '{.authentication.anonymous.enabled}'
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication: anonymous: enabled` to
|
||||
`false`.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
`--anonymous-auth=false`
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: '{.authorization.mode}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authorization.mode` to Webhook. If
|
||||
using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--authorization-mode=Webhook
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: '{.authentication.x509.clientCAFile}'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication.x509.clientCAFile` to
|
||||
the location of the client CA file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.4
|
||||
text: "Verify that the --read-only-port argument is set to 0 (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
set: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `readOnlyPort` to 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--read-only-port=0
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `streamingConnectionIdleTimeout` to a
|
||||
value other than 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--streaming-connection-idle-timeout=5m
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.6
|
||||
text: "Ensure that the --protect-kernel-defaults argument is set to true (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --protect-kernel-defaults
|
||||
path: '{.protectKernelDefaults}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `protectKernelDefaults` to `true`.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--protect-kernel-defaults=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
System level configurations are required prior to provisioning the cluster in order for this argument to be set to true.
|
||||
scored: true
|
||||
|
||||
- id: 4.2.7
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `makeIPTablesUtilChains` to `true`.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove the --make-iptables-util-chains argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.8
|
||||
text: "Ensure that the --hostname-override argument is not set (Manual)"
|
||||
# This is one of those properties that can only be set as a command line argument.
|
||||
# To check if the property is set as expected, we need to parse the kubelet command
|
||||
# instead reading the Kubelet Configuration file.
|
||||
type: "manual"
|
||||
audit: "/bin/ps -fC $kubeletbin "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --hostname-override
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and remove the --hostname-override argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
Clusters provisioned by RKE set the --hostname-override to avoid any hostname configuration errors
|
||||
scored: false
|
||||
|
||||
- id: 4.2.9
|
||||
text: "Ensure that the eventRecordQPS argument is set to a level which ensures appropriate event capture (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `eventRecordQPS` to an appropriate level.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.10
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cert-file
|
||||
path: '{.tlsCertFile}'
|
||||
- flag: --tls-private-key-file
|
||||
path: '{.tlsPrivateKeyFile}'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCertFile` to the location
|
||||
of the certificate file to use to identify this Kubelet, and `tlsPrivateKeyFile`
|
||||
to the location of the corresponding private key file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameters in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
When generating serving certificates, functionality could break in conjunction with hostname overrides which are required for certain cloud providers.
|
||||
scored: true
|
||||
|
||||
- id: 4.2.11
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to add the line `rotateCertificates` to `true` or
|
||||
remove it altogether to use the default value.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove --rotate-certificates=false argument from the KUBELET_CERTIFICATE_ARGS
|
||||
variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.12
|
||||
text: "Verify that the RotateKubeletServerCertificate argument is set to true (Manual)"
|
||||
type: "manual"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: false
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and set the below parameter in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
Clusters provisioned by RKE handles certificate rotation directly through RKE.
|
||||
scored: false
|
||||
|
||||
- id: 4.2.13
|
||||
text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cipher-suites
|
||||
path: '{range .tlsCipherSuites[:]}{}{'',''}{end}'
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCipherSuites` to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the --tls-cipher-suites parameter as follows, or to a subset of these values.
|
||||
--tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
327
cfg/rke-cis-1.24/policies.yaml
Normal file
327
cfg/rke-cis-1.24/policies.yaml
Normal file
@@ -0,0 +1,327 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.24"
|
||||
id: 5
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role :
|
||||
kubectl delete clusterrolebinding [name]
|
||||
scored: false
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize access to secrets (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to Secret objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Minimize access to create pods (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to pod objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.5
|
||||
text: "Ensure that default service accounts are not actively used. (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
||||
to the Kubernetes API server.
|
||||
Modify the configuration of each default service account to include this value
|
||||
automountServiceAccountToken: false
|
||||
scored: false
|
||||
|
||||
- id: 5.1.6
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Modify the definition of pods and service accounts which do not need to mount service
|
||||
account tokens to disable it.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.7
|
||||
text: "Avoid use of system:masters group (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.8
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Pod Security Standards"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Ensure that the cluster has at least one active policy control mechanism in place (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that either Pod Security Admission or an external policy control system is in place
|
||||
for every namespace which contains user workloads.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.2
|
||||
text: "Minimize the admission of privileged containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of privileged containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Automated)"
|
||||
audit: |
|
||||
kubectl get psp -o json | jq .items[] | jq -r 'select((.spec.hostPID == null) or (.spec.hostPID == false))' | jq .metadata.name | wc -l | xargs -I {} echo '--count={}'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "kubectl: not found"
|
||||
- flag: "jq: not found"
|
||||
- flag: count
|
||||
compare:
|
||||
op: gt
|
||||
value: 0
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostPID` containers.
|
||||
scored: true
|
||||
|
||||
- id: 5.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Automated)"
|
||||
audit: |
|
||||
kubectl get psp -o json | jq .items[] | jq -r 'select((.spec.hostIPC == null) or (.spec.hostIPC == false))' | jq .metadata.name | wc -l | xargs -I {} echo '--count={}'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "kubectl: not found"
|
||||
- flag: "jq: not found"
|
||||
- flag: count
|
||||
compare:
|
||||
op: gt
|
||||
value: 0
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostIPC` containers.
|
||||
scored: true
|
||||
|
||||
- id: 5.2.5
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Automated)"
|
||||
audit: |
|
||||
kubectl get psp -o json | jq .items[] | jq -r 'select((.spec.hostNetwork == null) or (.spec.hostNetwork == false))' | jq .metadata.name | wc -l | xargs -I {} echo '--count={}'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "kubectl: not found"
|
||||
- flag: "jq: not found"
|
||||
- flag: count
|
||||
compare:
|
||||
op: gt
|
||||
value: 0
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostNetwork` containers.
|
||||
scored: true
|
||||
|
||||
- id: 5.2.6
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Automated)"
|
||||
audit: |
|
||||
kubectl get psp -o json | jq .items[] | jq -r 'select((.spec.allowPrivilegeEscalation == null) or (.spec.allowPrivilegeEscalation == false))' | jq .metadata.name | wc -l | xargs -I {} echo '--count={}'
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "kubectl: not found"
|
||||
- flag: "jq: not found"
|
||||
- flag: count
|
||||
compare:
|
||||
op: gt
|
||||
value: 0
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `.spec.allowPrivilegeEscalation` set to `true`.
|
||||
scored: true
|
||||
|
||||
- id: 5.2.7
|
||||
text: "Minimize the admission of root containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a policy for each namespace in the cluster, ensuring that either `MustRunAsNonRoot`
|
||||
or `MustRunAs` with the range of UIDs not including 0, is set.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.8
|
||||
text: "Minimize the admission of containers with the NET_RAW capability (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with the `NET_RAW` capability.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.9
|
||||
text: "Minimize the admission of containers with added capabilities (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that `allowedCapabilities` is not present in policies for the cluster unless
|
||||
it is set to an empty array.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.10
|
||||
text: "Minimize the admission of containers with capabilities assigned (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the use of capabilites in applications running on your cluster. Where a namespace
|
||||
contains applicaions which do not require any Linux capabities to operate consider adding
|
||||
a PSP which forbids the admission of containers which do not drop all capabilities.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.11
|
||||
text: "Minimize the admission of Windows HostProcess containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers that have `.securityContext.windowsOptions.hostProcess` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.12
|
||||
text: "Minimize the admission of HostPath volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `hostPath` volumes.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.13
|
||||
text: "Minimize the admission of containers which use HostPorts (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers which use `hostPort` sections.
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "Network Policies and CNI"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure that the CNI in use supports NetworkPolicies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If the CNI plugin in use does not support network policies, consideration should be given to
|
||||
making use of a different plugin, or finding an alternate mechanism for restricting traffic
|
||||
in the Kubernetes cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.3.2
|
||||
text: "Ensure that all Namespaces have NetworkPolicies defined (Manual)"
|
||||
type: "skip"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Prefer using Secrets as files over Secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If possible, rewrite application code to read Secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 5.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the Secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 5.5
|
||||
text: "Extensible Admission Control"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup image provenance.
|
||||
scored: false
|
||||
|
||||
- id: 5.7
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 5.7.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.2
|
||||
text: "Ensure that the seccomp profile is set to docker/default in your Pod definitions (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Use `securityContext` to enable the docker/default seccomp profile in your pod definitions.
|
||||
An example is as below:
|
||||
securityContext:
|
||||
seccompProfile:
|
||||
type: RuntimeDefault
|
||||
scored: false
|
||||
|
||||
- id: 5.7.3
|
||||
text: "Apply SecurityContext to your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply SecurityContexts to your Pods. For a
|
||||
suggested list of SecurityContexts, you may refer to the CIS Security Benchmark for Docker
|
||||
Containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.4
|
||||
text: "The default namespace should not be used (Automated)"
|
||||
audit: |
|
||||
#!/bin/bash
|
||||
set -eE
|
||||
handle_error() {
|
||||
echo "false"
|
||||
}
|
||||
trap 'handle_error' ERR
|
||||
count=$(kubectl get all -n default -o json | jq .items[] | jq -r 'select((.metadata.name!="kubernetes"))' | jq .metadata.name | wc -l)
|
||||
if [[ ${count} -gt 0 ]]; then
|
||||
echo "false"
|
||||
exit
|
||||
fi
|
||||
echo "true"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "kubectl: not found"
|
||||
- flag: "jq: not found"
|
||||
- flag: "true"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
scored: true
|
||||
2
cfg/rke-cis-1.7/config.yaml
Normal file
2
cfg/rke-cis-1.7/config.yaml
Normal file
@@ -0,0 +1,2 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
60
cfg/rke-cis-1.7/controlplane.yaml
Normal file
60
cfg/rke-cis-1.7/controlplane.yaml
Normal file
@@ -0,0 +1,60 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.7"
|
||||
id: 3
|
||||
text: "Control Plane Configuration"
|
||||
type: "controlplane"
|
||||
groups:
|
||||
- id: 3.1
|
||||
text: "Authentication and Authorization"
|
||||
checks:
|
||||
- id: 3.1.1
|
||||
text: "Client certificate authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be
|
||||
implemented in place of client certificates.
|
||||
scored: false
|
||||
- id: 3.1.2
|
||||
text: "Service account token authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be implemented
|
||||
in place of service account tokens.
|
||||
scored: false
|
||||
- id: 3.1.3
|
||||
text: "Bootstrap token authentication should not be used for users (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Alternative mechanisms provided by Kubernetes such as the use of OIDC should be implemented
|
||||
in place of bootstrap tokens.
|
||||
scored: false
|
||||
|
||||
- id: 3.2
|
||||
text: "Logging"
|
||||
checks:
|
||||
- id: 3.2.1
|
||||
text: "Ensure that a minimal audit policy is created (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-policy-file"
|
||||
set: true
|
||||
remediation: |
|
||||
Create an audit policy file for your cluster.
|
||||
scored: true
|
||||
|
||||
- id: 3.2.2
|
||||
text: "Ensure that the audit policy covers key security concerns (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the audit policy provided for the cluster and ensure that it covers
|
||||
at least the following areas,
|
||||
- Access to Secrets managed by the cluster. Care should be taken to only
|
||||
log Metadata for requests to Secrets, ConfigMaps, and TokenReviews, in
|
||||
order to avoid risk of logging sensitive data.
|
||||
- Modification of Pod and Deployment objects.
|
||||
- Use of `pods/exec`, `pods/portforward`, `pods/proxy` and `services/proxy`.
|
||||
For most requests, minimally logging at the Metadata level is recommended
|
||||
(the most basic level of logging).
|
||||
scored: false
|
||||
136
cfg/rke-cis-1.7/etcd.yaml
Normal file
136
cfg/rke-cis-1.7/etcd.yaml
Normal file
@@ -0,0 +1,136 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.7"
|
||||
id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
type: "etcd"
|
||||
groups:
|
||||
- id: 2
|
||||
text: "Etcd Node Configuration"
|
||||
checks:
|
||||
- id: 2.1
|
||||
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--cert-file"
|
||||
env: "ETCD_CERT_FILE"
|
||||
- flag: "--key-file"
|
||||
env: "ETCD_KEY_FILE"
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure TLS encryption.
|
||||
Then, edit the etcd pod specification file /etc/kubernetes/manifests/etcd.yaml
|
||||
on the master node and set the below parameters.
|
||||
--cert-file=</path/to/ca-file>
|
||||
--key-file=</path/to/key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.2
|
||||
text: "Ensure that the --client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--client-cert-auth"
|
||||
env: "ETCD_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--client-cert-auth="true"
|
||||
scored: true
|
||||
|
||||
- id: 2.3
|
||||
text: "Ensure that the --auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--auto-tls"
|
||||
env: "ETCD_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --auto-tls parameter or set it to false.
|
||||
--auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.4
|
||||
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are
|
||||
set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--peer-cert-file"
|
||||
env: "ETCD_PEER_CERT_FILE"
|
||||
- flag: "--peer-key-file"
|
||||
env: "ETCD_PEER_KEY_FILE"
|
||||
remediation: |
|
||||
Follow the etcd service documentation and configure peer TLS encryption as appropriate
|
||||
for your etcd cluster.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameters.
|
||||
--peer-client-file=</path/to/peer-cert-file>
|
||||
--peer-key-file=</path/to/peer-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 2.5
|
||||
text: "Ensure that the --peer-client-cert-auth argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--peer-client-cert-auth"
|
||||
env: "ETCD_PEER_CLIENT_CERT_AUTH"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and set the below parameter.
|
||||
--peer-client-cert-auth=true
|
||||
scored: true
|
||||
|
||||
- id: 2.6
|
||||
text: "Ensure that the --peer-auto-tls argument is not set to true (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
set: false
|
||||
- flag: "--peer-auto-tls"
|
||||
env: "ETCD_PEER_AUTO_TLS"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the etcd pod specification file $etcdconf on the master
|
||||
node and either remove the --peer-auto-tls parameter or set it to false.
|
||||
--peer-auto-tls=false
|
||||
scored: true
|
||||
|
||||
- id: 2.7
|
||||
text: "Ensure that a unique Certificate Authority is used for etcd (Automated)"
|
||||
audit: "/bin/ps -ef | /bin/grep $etcdbin | /bin/grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--trusted-ca-file"
|
||||
env: "ETCD_TRUSTED_CA_FILE"
|
||||
set: true
|
||||
remediation: |
|
||||
[Manual test]
|
||||
Follow the etcd documentation and create a dedicated certificate authority setup for the
|
||||
etcd service.
|
||||
Then, edit the etcd pod specification file $etcdconf on the
|
||||
master node and set the below parameter.
|
||||
--trusted-ca-file=</path/to/ca-file>
|
||||
scored: true
|
||||
998
cfg/rke-cis-1.7/master.yaml
Normal file
998
cfg/rke-cis-1.7/master.yaml
Normal file
@@ -0,0 +1,998 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.7"
|
||||
id: 1
|
||||
text: "Control Plane Security Configuration"
|
||||
type: "master"
|
||||
groups:
|
||||
- id: 1.1
|
||||
text: "Control Plane Node Configuration Files"
|
||||
checks:
|
||||
- id: 1.1.1
|
||||
text: "Ensure that the API server pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c permissions=%a $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the
|
||||
control plane node.
|
||||
For example, chmod 600 $apiserverconf
|
||||
Not Applicable - Cluster provisioned by RKE doesn't require or maintain a configuration file for kube-apiserver.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.2
|
||||
text: "Ensure that the API server pod specification file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c %U:%G $apiserverconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $apiserverconf
|
||||
Not Applicable - Cluster provisioned by RKE doesn't require or maintain a configuration file for kube-apiserver.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.3
|
||||
text: "Ensure that the controller manager pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c permissions=%a $controllermanagerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 $controllermanagerconf
|
||||
Not Applicable - Cluster provisioned by RKE doesn't require or maintain a configuration file for kube-apiserver.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.4
|
||||
text: "Ensure that the controller manager pod specification file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c %U:%G $controllermanagerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $controllermanagerconf
|
||||
Not Applicable - Cluster provisioned by RKE doesn't require or maintain a configuration file for kube-apiserver.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.5
|
||||
text: "Ensure that the scheduler pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c permissions=%a $schedulerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 $schedulerconf
|
||||
Not Applicable - Cluster provisioned by RKE doesn't require or maintain a configuration file for kube-apiserver.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.6
|
||||
text: "Ensure that the scheduler pod specification file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c %U:%G $schedulerconf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root $schedulerconf
|
||||
Not Applicable - Cluster provisioned by RKE doesn't require or maintain a configuration file for kube-apiserver.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.7
|
||||
text: "Ensure that the etcd pod specification file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then find $etcdconf -name '*etcd*' | xargs stat -c permissions=%a; fi'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $etcdconf
|
||||
Not Applicable - Cluster provisioned by RKE doesn't require or maintain a configuration file for kube-apiserver.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.8
|
||||
text: "Ensure that the etcd pod specification file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $etcdconf; then find $etcdconf -name '*etcd*' | xargs stat -c %U:%G; fi'"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $etcdconf
|
||||
Not Applicable - Cluster provisioned by RKE doesn't require or maintain a configuration file for kube-apiserver.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.9
|
||||
text: "Ensure that the Container Network Interface file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: |
|
||||
ps -ef | grep $kubeletbin | grep -- --cni-conf-dir | sed 's%.*cni-conf-dir[= ]\([^ ]*\).*%\1%' | xargs -I{} find {} -mindepth 1 | xargs --no-run-if-empty stat -c permissions=%a
|
||||
find /var/lib/cni/networks -type f 2> /dev/null | xargs --no-run-if-empty stat -c permissions=%a
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 <path/to/cni/files>
|
||||
scored: false
|
||||
|
||||
- id: 1.1.10
|
||||
text: "Ensure that the Container Network Interface file ownership is set to root:root (Manual)"
|
||||
audit: |
|
||||
ps -ef | grep $kubeletbin | grep -- --cni-conf-dir | sed 's%.*cni-conf-dir[= ]\([^ ]*\).*%\1%' | xargs -I{} find {} -mindepth 1 | xargs --no-run-if-empty stat -c %U:%G
|
||||
find /var/lib/cni/networks -type f 2> /dev/null | xargs --no-run-if-empty stat -c %U:%G
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root <path/to/cni/files>
|
||||
scored: false
|
||||
|
||||
- id: 1.1.11
|
||||
text: "Ensure that the etcd data directory permissions are set to 700 or more restrictive (Automated)"
|
||||
audit: stat -c %a /node/var/lib/etcd
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "700"
|
||||
compare:
|
||||
op: eq
|
||||
value: "700"
|
||||
set: true
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above). For example,
|
||||
chmod 700 /var/lib/etcd
|
||||
scored: true
|
||||
|
||||
- id: 1.1.12
|
||||
text: "Ensure that the etcd data directory ownership is set to etcd:etcd (Automated)"
|
||||
type: "skip"
|
||||
audit: "stat -c %U:%G /node/var/lib/etcd"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "etcd:etcd"
|
||||
set: true
|
||||
remediation: |
|
||||
On the etcd server node, get the etcd data directory, passed as an argument --data-dir,
|
||||
from the command 'ps -ef | grep etcd'.
|
||||
Run the below command (based on the etcd data directory found above).
|
||||
For example, chown etcd:etcd /var/lib/etcd
|
||||
Permissive - A system service account is required for etcd data directory ownership.
|
||||
Refer to Rancher's hardening guide for more details on how to configure this ownership.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.13
|
||||
text: "Ensure that the admin.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e /etc/kubernetes/admin.conf; then stat -c permissions=%a /etc/kubernetes/admin.conf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chmod 600 /etc/kubernetes/admin.conf
|
||||
Not Applicable - Cluster provisioned by RKE does not store the kubernetes default kubeconfig credentials file on the nodes.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.14
|
||||
text: "Ensure that the admin.conf file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e /etc/kubernetes/admin.conf; then stat -c %U:%G /etc/kubernetes/admin.conf; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example, chown root:root /etc/kubernetes/admin.conf
|
||||
Not Applicable - Cluster provisioned by RKE does not store the kubernetes default kubeconfig credentials file on the nodes.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.15
|
||||
text: "Ensure that the scheduler.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerkubeconfig; then stat -c permissions=%a $schedulerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $schedulerkubeconfig
|
||||
Not Applicable - Cluster provisioned by RKE doesn't require or maintain a configuration file for scheduler.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.16
|
||||
text: "Ensure that the scheduler.conf file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $schedulerkubeconfig; then stat -c %U:%G $schedulerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $schedulerkubeconfig
|
||||
Not Applicable - Cluster provisioned by RKE doesn't require or maintain a configuration file for scheduler.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.17
|
||||
text: "Ensure that the controller-manager.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerkubeconfig; then stat -c permissions=%a $controllermanagerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chmod 600 $controllermanagerkubeconfig
|
||||
Not Applicable - Cluster provisioned by RKE doesn't require or maintain a configuration file for controller-manager.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.18
|
||||
text: "Ensure that the controller-manager.conf file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/sh -c 'if test -e $controllermanagerkubeconfig; then stat -c %U:%G $controllermanagerkubeconfig; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown root:root $controllermanagerkubeconfig
|
||||
Not Applicable - Cluster provisioned by RKE doesn't require or maintain a configuration file for controller-manager.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 1.1.19
|
||||
text: "Ensure that the Kubernetes PKI directory and file ownership is set to root:root (Automated)"
|
||||
audit: "check_files_owner_in_dir.sh /node/etc/kubernetes/ssl"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "true"
|
||||
compare:
|
||||
op: eq
|
||||
value: "true"
|
||||
set: true
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
chown -R root:root /etc/kubernetes/pki/
|
||||
scored: true
|
||||
|
||||
- id: 1.1.20
|
||||
text: "Ensure that the Kubernetes PKI certificate file permissions are set to 600 or more restrictive (Manual)"
|
||||
audit: "find /node/etc/kubernetes/ssl/ -name '*.pem' ! -name '*key.pem' | xargs stat -c permissions=%a"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
find /node/etc/kubernetes/ssl/ -name '*.pem' ! -name '*key.pem' -exec chmod -R 600 {} +
|
||||
scored: false
|
||||
|
||||
- id: 1.1.21
|
||||
text: "Ensure that the Kubernetes PKI key file permissions are set to 600 (Manual)"
|
||||
audit: "find /node/etc/kubernetes/ssl/ -name '*key.pem' | xargs stat -c permissions=%a"
|
||||
use_multiple_values: true
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the control plane node.
|
||||
For example,
|
||||
find /node/etc/kubernetes/ssl/ -name '*key.pem' -exec chmod -R 600 {} +
|
||||
scored: false
|
||||
|
||||
- id: 1.2
|
||||
text: "API Server"
|
||||
checks:
|
||||
- id: 1.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
set: true
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--anonymous-auth=false
|
||||
scored: true
|
||||
|
||||
- id: 1.2.2
|
||||
text: "Ensure that the --token-auth-file parameter is not set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--token-auth-file"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and configure alternate mechanisms for authentication. Then,
|
||||
edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and remove the --token-auth-file=<filename> parameter.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.3
|
||||
text: "Ensure that the --DenyServiceExternalIPs is not set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "DenyServiceExternalIPs"
|
||||
set: true
|
||||
- flag: "--enable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and remove the `DenyServiceExternalIPs`
|
||||
from enabled admission plugins.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.4
|
||||
text: "Ensure that the --kubelet-client-certificate and --kubelet-client-key arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--kubelet-client-certificate"
|
||||
- flag: "--kubelet-client-key"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the
|
||||
apiserver and kubelets. Then, edit API server pod specification file
|
||||
$apiserverconf on the control plane node and set the
|
||||
kubelet client certificate and key parameters as below.
|
||||
--kubelet-client-certificate=<path/to/client-certificate-file>
|
||||
--kubelet-client-key=<path/to/client-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.5
|
||||
text: "Ensure that the --kubelet-certificate-authority argument is set as appropriate (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--kubelet-certificate-authority"
|
||||
set: true
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup the TLS connection between
|
||||
the apiserver and kubelets. Then, edit the API server pod specification file
|
||||
$apiserverconf on the control plane node and set the
|
||||
--kubelet-certificate-authority parameter to the path to the cert file for the certificate authority.
|
||||
--kubelet-certificate-authority=<ca-string>
|
||||
Permissive - When generating serving certificates, functionality could break in conjunction with hostname overrides which are required for certain cloud providers.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.6
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "AlwaysAllow"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to values other than AlwaysAllow.
|
||||
One such example could be as below.
|
||||
--authorization-mode=RBAC
|
||||
scored: true
|
||||
|
||||
- id: 1.2.7
|
||||
text: "Ensure that the --authorization-mode argument includes Node (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "Node"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to a value that includes Node.
|
||||
--authorization-mode=Node,RBAC
|
||||
scored: true
|
||||
|
||||
- id: 1.2.8
|
||||
text: "Ensure that the --authorization-mode argument includes RBAC (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--authorization-mode"
|
||||
compare:
|
||||
op: has
|
||||
value: "RBAC"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --authorization-mode parameter to a value that includes RBAC,
|
||||
for example `--authorization-mode=Node,RBAC`.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.9
|
||||
text: "Ensure that the admission control plugin EventRateLimit is set (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "EventRateLimit"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set the desired limits in a configuration file.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
and set the below parameters.
|
||||
--enable-admission-plugins=...,EventRateLimit,...
|
||||
--admission-control-config-file=<path/to/configuration/file>
|
||||
scored: false
|
||||
|
||||
- id: 1.2.10
|
||||
text: "Ensure that the admission control plugin AlwaysAdmit is not set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAdmit
|
||||
- flag: "--enable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and either remove the --enable-admission-plugins parameter, or set it to a
|
||||
value that does not include AlwaysAdmit.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.11
|
||||
text: "Ensure that the admission control plugin AlwaysPullImages is set (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "AlwaysPullImages"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to include
|
||||
AlwaysPullImages.
|
||||
--enable-admission-plugins=...,AlwaysPullImages,...
|
||||
scored: false
|
||||
|
||||
- id: 1.2.12
|
||||
text: "Ensure that the admission control plugin SecurityContextDeny is set if PodSecurityPolicy is not used (Manual)"
|
||||
type: "skip"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "SecurityContextDeny"
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "PodSecurityPolicy"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to include
|
||||
SecurityContextDeny, unless PodSecurityPolicy is already in place.
|
||||
--enable-admission-plugins=...,SecurityContextDeny,...
|
||||
Permissive - Enabling Pod Security Policy can cause applications to unexpectedly fail.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.13
|
||||
text: "Ensure that the admission control plugin ServiceAccount is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "ServiceAccount"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Follow the documentation and create ServiceAccount objects as per your environment.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and ensure that the --disable-admission-plugins parameter is set to a
|
||||
value that does not include ServiceAccount.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.14
|
||||
text: "Ensure that the admission control plugin NamespaceLifecycle is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--disable-admission-plugins"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "NamespaceLifecycle"
|
||||
- flag: "--disable-admission-plugins"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --disable-admission-plugins parameter to
|
||||
ensure it does not include NamespaceLifecycle.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.15
|
||||
text: "Ensure that the admission control plugin NodeRestriction is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--enable-admission-plugins"
|
||||
compare:
|
||||
op: has
|
||||
value: "NodeRestriction"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure NodeRestriction plug-in on kubelets.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --enable-admission-plugins parameter to a
|
||||
value that includes NodeRestriction.
|
||||
--enable-admission-plugins=...,NodeRestriction,...
|
||||
scored: true
|
||||
|
||||
- id: 1.2.16
|
||||
text: "Ensure that the --secure-port argument is not set to 0 - NoteThis recommendation is obsolete and will be deleted per the consensus process (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--secure-port"
|
||||
compare:
|
||||
op: gt
|
||||
value: 0
|
||||
- flag: "--secure-port"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and either remove the --secure-port parameter or
|
||||
set it to a different (non-zero) desired port.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.17
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.2.18
|
||||
text: "Ensure that the --audit-log-path argument is set (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-path"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-path parameter to a suitable path and
|
||||
file where you would like audit logs to be written, for example,
|
||||
--audit-log-path=/var/log/apiserver/audit.log
|
||||
scored: true
|
||||
|
||||
- id: 1.2.19
|
||||
text: "Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxage"
|
||||
compare:
|
||||
op: gte
|
||||
value: 30
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxage parameter to 30
|
||||
or as an appropriate number of days, for example,
|
||||
--audit-log-maxage=30
|
||||
scored: true
|
||||
|
||||
- id: 1.2.20
|
||||
text: "Ensure that the --audit-log-maxbackup argument is set to 10 or as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxbackup"
|
||||
compare:
|
||||
op: gte
|
||||
value: 10
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxbackup parameter to 10 or to an appropriate
|
||||
value. For example,
|
||||
--audit-log-maxbackup=10
|
||||
scored: true
|
||||
|
||||
- id: 1.2.21
|
||||
text: "Ensure that the --audit-log-maxsize argument is set to 100 or as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--audit-log-maxsize"
|
||||
compare:
|
||||
op: gte
|
||||
value: 100
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --audit-log-maxsize parameter to an appropriate size in MB.
|
||||
For example, to set it as 100 MB, --audit-log-maxsize=100
|
||||
scored: true
|
||||
|
||||
- id: 1.2.22
|
||||
text: "Ensure that the --request-timeout argument is set as appropriate (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
type: manual
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
and set the below parameter as appropriate and if needed.
|
||||
For example, --request-timeout=300s
|
||||
scored: false
|
||||
|
||||
- id: 1.2.23
|
||||
text: "Ensure that the --service-account-lookup argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--service-account-lookup"
|
||||
set: false
|
||||
- flag: "--service-account-lookup"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the below parameter.
|
||||
--service-account-lookup=true
|
||||
Alternatively, you can delete the --service-account-lookup parameter from this file so
|
||||
that the default takes effect.
|
||||
scored: true
|
||||
|
||||
- id: 1.2.24
|
||||
text: "Ensure that the --service-account-key-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-key-file"
|
||||
remediation: |
|
||||
Edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --service-account-key-file parameter
|
||||
to the public key file for service accounts. For example,
|
||||
--service-account-key-file=<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.25
|
||||
text: "Ensure that the --etcd-certfile and --etcd-keyfile arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--etcd-certfile"
|
||||
- flag: "--etcd-keyfile"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the etcd certificate and key file parameters.
|
||||
--etcd-certfile=<path/to/client-certificate-file>
|
||||
--etcd-keyfile=<path/to/client-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.26
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- flag: "--tls-cert-file"
|
||||
- flag: "--tls-private-key-file"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the TLS certificate and private key file parameters.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.27
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--client-ca-file"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the client certificate authority file.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.28
|
||||
text: "Ensure that the --etcd-cafile argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--etcd-cafile"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and set up the TLS connection between the apiserver and etcd.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the etcd certificate authority file parameter.
|
||||
--etcd-cafile=<path/to/ca-file>
|
||||
scored: true
|
||||
|
||||
- id: 1.2.29
|
||||
text: "Ensure that the --encryption-provider-config argument is set as appropriate (Manual)"
|
||||
type: "skip"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--encryption-provider-config"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
||||
Then, edit the API server pod specification file $apiserverconf
|
||||
on the control plane node and set the --encryption-provider-config parameter to the path of that file.
|
||||
For example, --encryption-provider-config=</path/to/EncryptionConfig/File>
|
||||
Permissive - Enabling encryption changes how data can be recovered as data is encrypted.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.30
|
||||
text: "Ensure that encryption providers are appropriately configured (Manual)"
|
||||
type: "skip"
|
||||
audit: |
|
||||
ENCRYPTION_PROVIDER_CONFIG=$(ps -ef | grep $apiserverbin | grep -- --encryption-provider-config | sed 's%.*encryption-provider-config[= ]\([^ ]*\).*%\1%')
|
||||
if test -e $ENCRYPTION_PROVIDER_CONFIG; then grep -A1 'providers:' $ENCRYPTION_PROVIDER_CONFIG | tail -n1 | grep -o "[A-Za-z]*" | sed 's/^/provider=/'; fi
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "provider"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "aescbc,kms,secretbox"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and configure a EncryptionConfig file.
|
||||
In this file, choose aescbc, kms or secretbox as the encryption provider.
|
||||
Permissive - Enabling encryption changes how data can be recovered as data is encrypted.
|
||||
scored: false
|
||||
|
||||
- id: 1.2.31
|
||||
text: "Ensure that the API Server only makes use of Strong Cryptographic Ciphers (Manual)"
|
||||
audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--tls-cipher-suites"
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: "TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384"
|
||||
remediation: |
|
||||
Edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml
|
||||
on the control plane node and set the below parameter.
|
||||
--tls-cipher-suites=TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
|
||||
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
|
||||
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
|
||||
TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
|
||||
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
|
||||
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,
|
||||
TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384
|
||||
scored: false
|
||||
|
||||
- id: 1.3
|
||||
text: "Controller Manager"
|
||||
checks:
|
||||
- id: 1.3.1
|
||||
text: "Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--terminated-pod-gc-threshold"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --terminated-pod-gc-threshold to an appropriate threshold,
|
||||
for example, --terminated-pod-gc-threshold=10
|
||||
scored: true
|
||||
|
||||
- id: 1.3.2
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.3.3
|
||||
text: "Ensure that the --use-service-account-credentials argument is set to true (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--use-service-account-credentials"
|
||||
compare:
|
||||
op: noteq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node to set the below parameter.
|
||||
--use-service-account-credentials=true
|
||||
scored: true
|
||||
|
||||
- id: 1.3.4
|
||||
text: "Ensure that the --service-account-private-key-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--service-account-private-key-file"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --service-account-private-key-file parameter
|
||||
to the private key file for service accounts.
|
||||
--service-account-private-key-file=<filename>
|
||||
scored: true
|
||||
|
||||
- id: 1.3.5
|
||||
text: "Ensure that the --root-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--root-ca-file"
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --root-ca-file parameter to the certificate bundle file`.
|
||||
--root-ca-file=<path/to/file>
|
||||
scored: true
|
||||
|
||||
- id: 1.3.6
|
||||
text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Automated)"
|
||||
type: "skip"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--feature-gates"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "RotateKubeletServerCertificate=false"
|
||||
set: true
|
||||
- flag: "--feature-gates"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and set the --feature-gates parameter to include RotateKubeletServerCertificate=true.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
Cluster provisioned by RKE handles certificate rotation directly through RKE.
|
||||
scored: true
|
||||
|
||||
- id: 1.3.7
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Controller Manager pod specification file $controllermanagerconf
|
||||
on the control plane node and ensure the correct value for the --bind-address parameter
|
||||
scored: true
|
||||
|
||||
- id: 1.4
|
||||
text: "Scheduler"
|
||||
checks:
|
||||
- id: 1.4.1
|
||||
text: "Ensure that the --profiling argument is set to false (Automated)"
|
||||
audit: "/bin/ps -ef | grep $schedulerbin | grep -v grep"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--profiling"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
Edit the Scheduler pod specification file $schedulerconf file
|
||||
on the control plane node and set the below parameter.
|
||||
--profiling=false
|
||||
scored: true
|
||||
|
||||
- id: 1.4.2
|
||||
text: "Ensure that the --bind-address argument is set to 127.0.0.1 (Automated)"
|
||||
audit: "/bin/ps -ef | grep $schedulerbin | grep -v grep"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--bind-address"
|
||||
compare:
|
||||
op: eq
|
||||
value: "127.0.0.1"
|
||||
- flag: "--bind-address"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the Scheduler pod specification file $schedulerconf
|
||||
on the control plane node and ensure the correct value for the --bind-address parameter
|
||||
scored: true
|
||||
462
cfg/rke-cis-1.7/node.yaml
Normal file
462
cfg/rke-cis-1.7/node.yaml
Normal file
@@ -0,0 +1,462 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.7"
|
||||
id: 4
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 4.1
|
||||
text: "Worker Node Configuration Files"
|
||||
checks:
|
||||
- id: 4.1.1
|
||||
text: "Ensure that the kubelet service file permissions are set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c permissions=%a $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chmod 600 $kubeletsvc
|
||||
Not Applicable - Clusters provisioned by RKE doesn’t require or maintain a configuration file for the kubelet service.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.2
|
||||
text: "Ensure that the kubelet service file ownership is set to root:root (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletsvc
|
||||
Not Applicable - Clusters provisioned by RKE doesn’t require or maintain a configuration file for the kubelet service.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.3
|
||||
text: "If proxy kubeconfig file exists ensure permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c permissions=%a $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
set: true
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.4
|
||||
text: "If proxy kubeconfig file exists ensure ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $proxykubeconfig; then stat -c %U:%G $proxykubeconfig; fi'' '
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example, chown root:root $proxykubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.5
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c permissions=%a $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chmod 600 $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.6
|
||||
text: "Ensure that the --kubeconfig kubelet.conf file ownership is set to root:root (Automated)"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletkubeconfig; then stat -c %U:%G $kubeletkubeconfig; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the below command (based on the file location on your system) on the each worker node.
|
||||
For example,
|
||||
chown root:root $kubeletkubeconfig
|
||||
scored: true
|
||||
|
||||
- id: 4.1.7
|
||||
text: "Ensure that the certificate authorities file permissions are set to 600 or more restrictive (Automated)"
|
||||
audit: "stat -c permissions=%a /node/etc/kubernetes/ssl/kube-ca.pem"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command to modify the file permissions of the
|
||||
--client-ca-file chmod 600 <filename>
|
||||
scored: true
|
||||
|
||||
- id: 4.1.8
|
||||
text: "Ensure that the client certificate authorities file ownership is set to root:root (Automated)"
|
||||
audit: "stat -c %U:%G /node/etc/kubernetes/ssl/kube-ca.pem"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the following command to modify the ownership of the --client-ca-file.
|
||||
chown root:root <filename>
|
||||
scored: true
|
||||
|
||||
- id: 4.1.9
|
||||
text: "If the kubelet config.yaml configuration file is being used validate permissions set to 600 or more restrictive (Automated)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c permissions=%a $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "permissions"
|
||||
compare:
|
||||
op: bitmask
|
||||
value: "600"
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chmod 600 $kubeletconf
|
||||
Not Applicable - Clusters provisioned by RKE do not require or maintain a configuration file for the kubelet.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: true
|
||||
|
||||
- id: 4.1.10
|
||||
text: "If the kubelet config.yaml configuration file is being used validate file ownership is set to root:root (Manual)"
|
||||
type: "skip"
|
||||
audit: '/bin/sh -c ''if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi'' '
|
||||
tests:
|
||||
test_items:
|
||||
- flag: root:root
|
||||
remediation: |
|
||||
Run the following command (using the config file location identified in the Audit step)
|
||||
chown root:root $kubeletconf
|
||||
Not Applicable - Clusters provisioned by RKE doesn’t require or maintain a configuration file for the kubelet.
|
||||
All configuration is passed in as arguments at container run time.
|
||||
scored: false
|
||||
|
||||
- id: 4.2
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 4.2.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--anonymous-auth"
|
||||
path: '{.authentication.anonymous.enabled}'
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication: anonymous: enabled` to
|
||||
`false`.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
`--anonymous-auth=false`
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --authorization-mode
|
||||
path: '{.authorization.mode}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: AlwaysAllow
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authorization.mode` to Webhook. If
|
||||
using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--authorization-mode=Webhook
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --client-ca-file
|
||||
path: '{.authentication.x509.clientCAFile}'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `authentication.x509.clientCAFile` to
|
||||
the location of the client CA file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.4
|
||||
text: "Verify that the --read-only-port argument is set to 0 (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
- flag: "--read-only-port"
|
||||
path: '{.readOnlyPort}'
|
||||
set: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `readOnlyPort` to 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--read-only-port=0
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
- flag: --streaming-connection-idle-timeout
|
||||
path: '{.streamingConnectionIdleTimeout}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `streamingConnectionIdleTimeout` to a
|
||||
value other than 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--streaming-connection-idle-timeout=5m
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.6
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --make-iptables-util-chains
|
||||
path: '{.makeIPTablesUtilChains}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `makeIPTablesUtilChains` to `true`.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove the --make-iptables-util-chains argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.7
|
||||
text: "Ensure that the --hostname-override argument is not set (Manual)"
|
||||
# This is one of those properties that can only be set as a command line argument.
|
||||
# To check if the property is set as expected, we need to parse the kubelet command
|
||||
# instead reading the Kubelet Configuration file.
|
||||
type: "skip"
|
||||
audit: "/bin/ps -fC $kubeletbin "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --hostname-override
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and remove the --hostname-override argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
Not Applicable - Clusters provisioned by RKE set the --hostname-override to avoid any hostname configuration errors
|
||||
scored: false
|
||||
|
||||
- id: 4.2.8
|
||||
text: "Ensure that the eventRecordQPS argument is set to a level which ensures appropriate event capture (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
compare:
|
||||
op: gte
|
||||
value: 0
|
||||
- flag: --event-qps
|
||||
path: '{.eventRecordQPS}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `eventRecordQPS` to an appropriate level.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 4.2.9
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Manual)"
|
||||
type: "skip"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cert-file
|
||||
path: '{.tlsCertFile}'
|
||||
- flag: --tls-private-key-file
|
||||
path: '{.tlsPrivateKeyFile}'
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCertFile` to the location
|
||||
of the certificate file to use to identify this Kubelet, and `tlsPrivateKeyFile`
|
||||
to the location of the corresponding private key file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameters in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
--tls-private-key-file=<path/to/tls-key-file>
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
Permissive - When generating serving certificates, functionality could break in conjunction with hostname overrides which are required for certain cloud providers.
|
||||
scored: false
|
||||
|
||||
- id: 4.2.10
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
- flag: --rotate-certificates
|
||||
path: '{.rotateCertificates}'
|
||||
set: false
|
||||
bin_op: or
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to add the line `rotateCertificates` to `true` or
|
||||
remove it altogether to use the default value.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove --rotate-certificates=false argument from the KUBELET_CERTIFICATE_ARGS
|
||||
variable.
|
||||
Based on your system, restart the kubelet service. For example,
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.11
|
||||
text: "Verify that the RotateKubeletServerCertificate argument is set to true (Manual)"
|
||||
type: "skip"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
compare:
|
||||
op: nothave
|
||||
value: false
|
||||
- flag: RotateKubeletServerCertificate
|
||||
path: '{.featureGates.RotateKubeletServerCertificate}'
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and set the below parameter in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--feature-gates=RotateKubeletServerCertificate=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
Not Applicable - Clusters provisioned by RKE handles certificate rotation directly through RKE.
|
||||
scored: false
|
||||
|
||||
- id: 4.2.12
|
||||
text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Automated)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --tls-cipher-suites
|
||||
path: '{range .tlsCipherSuites[:]}{}{'',''}{end}'
|
||||
compare:
|
||||
op: valid_elements
|
||||
value: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set `tlsCipherSuites` to
|
||||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
or to a subset of these values.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the --tls-cipher-suites parameter as follows, or to a subset of these values.
|
||||
--tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 4.2.13
|
||||
text: "Ensure that a limit is set on pod PIDs (Manual)"
|
||||
audit: "/bin/ps -fC $kubeletbin"
|
||||
audit_config: "/bin/sh -c 'if test -e $kubeletconf; then /bin/cat $kubeletconf; fi' "
|
||||
tests:
|
||||
test_items:
|
||||
- flag: --pod-max-pids
|
||||
path: '{.podPidsLimit}'
|
||||
remediation: |
|
||||
Decide on an appropriate level for this parameter and set it,
|
||||
either via the --pod-max-pids command line parameter or the PodPidsLimit configuration file setting.
|
||||
scored: false
|
||||
309
cfg/rke-cis-1.7/policies.yaml
Normal file
309
cfg/rke-cis-1.7/policies.yaml
Normal file
@@ -0,0 +1,309 @@
|
||||
---
|
||||
controls:
|
||||
version: "rke-cis-1.7"
|
||||
id: 5
|
||||
text: "Kubernetes Policies"
|
||||
type: "policies"
|
||||
groups:
|
||||
- id: 5.1
|
||||
text: "RBAC and Service Accounts"
|
||||
checks:
|
||||
- id: 5.1.1
|
||||
text: "Ensure that the cluster-admin role is only used where required (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Identify all clusterrolebindings to the cluster-admin role. Check if they are used and
|
||||
if they need this role or if they could use a role with fewer privileges.
|
||||
Where possible, first bind users to a lower privileged role and then remove the
|
||||
clusterrolebinding to the cluster-admin role :
|
||||
kubectl delete clusterrolebinding [name]
|
||||
scored: false
|
||||
|
||||
- id: 5.1.2
|
||||
text: "Minimize access to secrets (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove get, list and watch access to Secret objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.3
|
||||
text: "Minimize wildcard use in Roles and ClusterRoles (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible replace any use of wildcards in clusterroles and roles with specific
|
||||
objects or actions.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.4
|
||||
text: "Minimize access to create pods (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to pod objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.5
|
||||
text: "Ensure that default service accounts are not actively used. (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create explicit service accounts wherever a Kubernetes workload requires specific access
|
||||
to the Kubernetes API server.
|
||||
Modify the configuration of each default service account to include this value
|
||||
automountServiceAccountToken: false
|
||||
scored: false
|
||||
|
||||
- id: 5.1.6
|
||||
text: "Ensure that Service Account Tokens are only mounted where necessary (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Modify the definition of pods and service accounts which do not need to mount service
|
||||
account tokens to disable it.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.7
|
||||
text: "Avoid use of system:masters group (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Remove the system:masters group from all users in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.8
|
||||
text: "Limit use of the Bind, Impersonate and Escalate permissions in the Kubernetes cluster (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove the impersonate, bind and escalate rights from subjects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.9
|
||||
text: "Minimize access to create persistent volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove create access to PersistentVolume objects in the cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.10
|
||||
text: "Minimize access to the proxy sub-resource of nodes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the proxy sub-resource of node objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.11
|
||||
text: "Minimize access to the approval sub-resource of certificatesigningrequests objects (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the approval sub-resource of certificatesigningrequest objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.1.12
|
||||
text: "Minimize access to webhook configuration objects (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the validatingwebhookconfigurations or mutatingwebhookconfigurations objects
|
||||
scored: false
|
||||
|
||||
- id: 5.1.13
|
||||
text: "Minimize access to the service account token creation (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Where possible, remove access to the token sub-resource of serviceaccount objects.
|
||||
scored: false
|
||||
|
||||
- id: 5.2
|
||||
text: "Pod Security Standards"
|
||||
checks:
|
||||
- id: 5.2.1
|
||||
text: "Ensure that the cluster has at least one active policy control mechanism in place (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that either Pod Security Admission or an external policy control system is in place
|
||||
for every namespace which contains user workloads.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.2
|
||||
text: "Minimize the admission of privileged containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of privileged containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.3
|
||||
text: "Minimize the admission of containers wishing to share the host process ID namespace (Automated)"
|
||||
type: "skip"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostPID` containers.
|
||||
Permissive - Enabling Pod Security Policy can cause applications to unexpectedly fail.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.4
|
||||
text: "Minimize the admission of containers wishing to share the host IPC namespace (Automated)"
|
||||
type: "skip"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostIPC` containers.
|
||||
Permissive - Enabling Pod Security Policy can cause applications to unexpectedly fail.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.5
|
||||
text: "Minimize the admission of containers wishing to share the host network namespace (Automated)"
|
||||
type: "skip"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of `hostNetwork` containers.
|
||||
Permissive - Enabling Pod Security Policy can cause applications to unexpectedly fail.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.6
|
||||
text: "Minimize the admission of containers with allowPrivilegeEscalation (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `.spec.allowPrivilegeEscalation` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.7
|
||||
text: "Minimize the admission of root containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Create a policy for each namespace in the cluster, ensuring that either `MustRunAsNonRoot`
|
||||
or `MustRunAs` with the range of UIDs not including 0, is set.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.8
|
||||
text: "Minimize the admission of containers with the NET_RAW capability (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with the `NET_RAW` capability.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.9
|
||||
text: "Minimize the admission of containers with added capabilities (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Ensure that `allowedCapabilities` is not present in policies for the cluster unless
|
||||
it is set to an empty array.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.10
|
||||
text: "Minimize the admission of containers with capabilities assigned (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Review the use of capabilites in applications running on your cluster. Where a namespace
|
||||
contains applicaions which do not require any Linux capabities to operate consider adding
|
||||
a PSP which forbids the admission of containers which do not drop all capabilities.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.11
|
||||
text: "Minimize the admission of Windows HostProcess containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers that have `.securityContext.windowsOptions.hostProcess` set to `true`.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.12
|
||||
text: "Minimize the admission of HostPath volumes (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers with `hostPath` volumes.
|
||||
scored: false
|
||||
|
||||
- id: 5.2.13
|
||||
text: "Minimize the admission of containers which use HostPorts (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Add policies to each namespace in the cluster which has user workloads to restrict the
|
||||
admission of containers which use `hostPort` sections.
|
||||
scored: false
|
||||
|
||||
- id: 5.3
|
||||
text: "Network Policies and CNI"
|
||||
checks:
|
||||
- id: 5.3.1
|
||||
text: "Ensure that the CNI in use supports NetworkPolicies (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If the CNI plugin in use does not support network policies, consideration should be given to
|
||||
making use of a different plugin, or finding an alternate mechanism for restricting traffic
|
||||
in the Kubernetes cluster.
|
||||
scored: false
|
||||
|
||||
- id: 5.3.2
|
||||
text: "Ensure that all Namespaces have NetworkPolicies defined (Manual)"
|
||||
type: "skip"
|
||||
remediation: |
|
||||
Follow the documentation and create NetworkPolicy objects as you need them.
|
||||
Permissive - Enabling Network Policies can prevent certain applications from communicating with each other.
|
||||
scored: false
|
||||
|
||||
- id: 5.4
|
||||
text: "Secrets Management"
|
||||
checks:
|
||||
- id: 5.4.1
|
||||
text: "Prefer using Secrets as files over Secrets as environment variables (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
If possible, rewrite application code to read Secrets from mounted secret files, rather than
|
||||
from environment variables.
|
||||
scored: false
|
||||
|
||||
- id: 5.4.2
|
||||
text: "Consider external secret storage (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Refer to the Secrets management options offered by your cloud provider or a third-party
|
||||
secrets management solution.
|
||||
scored: false
|
||||
|
||||
- id: 5.5
|
||||
text: "Extensible Admission Control"
|
||||
checks:
|
||||
- id: 5.5.1
|
||||
text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and setup image provenance.
|
||||
scored: false
|
||||
|
||||
- id: 5.7
|
||||
text: "General Policies"
|
||||
checks:
|
||||
- id: 5.7.1
|
||||
text: "Create administrative boundaries between resources using namespaces (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the documentation and create namespaces for objects in your deployment as you need
|
||||
them.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.2
|
||||
text: "Ensure that the seccomp profile is set to docker/default in your Pod definitions (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Use `securityContext` to enable the docker/default seccomp profile in your pod definitions.
|
||||
An example is as below:
|
||||
securityContext:
|
||||
seccompProfile:
|
||||
type: RuntimeDefault
|
||||
scored: false
|
||||
|
||||
- id: 5.7.3
|
||||
text: "Apply SecurityContext to your Pods and Containers (Manual)"
|
||||
type: "manual"
|
||||
remediation: |
|
||||
Follow the Kubernetes documentation and apply SecurityContexts to your Pods. For a
|
||||
suggested list of SecurityContexts, you may refer to the CIS Security Benchmark for Docker
|
||||
Containers.
|
||||
scored: false
|
||||
|
||||
- id: 5.7.4
|
||||
text: "The default namespace should not be used (Manual)"
|
||||
type: "skip"
|
||||
remediation: |
|
||||
Ensure that namespaces are created to allow for appropriate segregation of Kubernetes
|
||||
resources and that all new resources are created in a specific namespace.
|
||||
Permissive - Kubernetes provides a default namespace.
|
||||
scored: false
|
||||
Some files were not shown because too many files have changed in this diff Show More
Reference in New Issue
Block a user