removed aquadev

* added specific problematic hooks folder for when compiling with pyinstaller. added a fix for prettytable import

* fixed typo

* lint fix

.dockerignore

@@ -0,0 +1,4 @@
+*.png
+tests/
+docs/
+.github/

.flake8

@@ -0,0 +1,6 @@
+[flake8]
+ignore = E203, E266, E501, W503, B903, T499
+max-line-length = 120
+max-complexity = 18
+select = B,C,E,F,W,B9,T4
+mypy_config=mypy.ini

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,67 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ master ]
+  schedule:
+    - cron: '16 3 * * 1'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'python' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
+        # Learn more:
+        # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+        # queries: ./path/to/local/query, your-org/your-repo/queries@main
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v1
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 https://git.io/JvXDl
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+    #    and modify them (or add more) to build your code if your project
+    #    uses a compiled language
+
+    #- run: |
+    #   make bootstrap
+    #   make release
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1

.github/workflows/lint.yml

@@ -0,0 +1,12 @@
+name: Lint
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+      - uses: pre-commit/action@v2.0.0

.github/workflows/release.yml

@@ -0,0 +1,52 @@
+on:
+  push:
+    # Sequence of patterns matched against refs/tags
+    tags:
+    - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
+    
+name: Upload Release Asset
+
+jobs:
+  build:
+    name: Upload Release Asset
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.9'
+      
+      - name: Install dependencies
+        run: |
+          python -m pip install -U pip
+          python -m pip install -r requirements-dev.txt
+      
+      - name: Build project
+        shell: bash
+        run: |
+          make pyinstaller
+      
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ github.ref }}
+          draft: false
+          prerelease: false
+          
+      - name: Upload Release Asset
+        id: upload-release-asset 
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./dist/kube-hunter
+          asset_name: kube-hunter-linux-x86_64-${{ github.ref }}
+          asset_content_type: application/octet-stream

.github/workflows/test.yml

@@ -0,0 +1,54 @@
+name: Test
+
+on: [push, pull_request]
+
+env:
+  FORCE_COLOR: 1
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.6", "3.7", "3.8", "3.9"]
+        os: [ubuntu-20.04, ubuntu-18.04, ubuntu-16.04]
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Get pip cache dir
+        id: pip-cache
+        run: |
+          echo "::set-output name=dir::$(pip cache dir)"
+
+      - name: Cache
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.pip-cache.outputs.dir }}
+          key:
+            ${{ matrix.os }}-${{ matrix.python-version }}-${{ hashFiles('requirements-dev.txt') }}
+          restore-keys: |
+            ${{ matrix.os }}-${{ matrix.python-version }}-
+
+      - name: Install dependencies
+        run: |
+          python -m pip install -U pip
+          python -m pip install -U wheel
+          python -m pip install -r requirements.txt
+          python -m pip install -r requirements-dev.txt
+
+      - name: Test
+        shell: bash
+        run: |
+          make test
+
+      - name: Upload coverage
+        uses: codecov/codecov-action@v1
+        with:
+          name: ${{ matrix.os }} Python ${{ matrix.python-version }}

.gitignore

@@ -1,12 +1,33 @@
 *.pyc
 .venv
-.dockerignore
 *aqua*
 venv/
 .vscode
 .coverage
 .idea
 
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+*.spec
+.eggs
+pip-wheel-metadata
+
 # Directory Cache Files
 .DS_Store
 thumbs.db
+__pycache__
+.mypy_cache

.pre-commit-config.yaml

@@ -0,0 +1,10 @@
+repos:
+- repo: https://github.com/psf/black
+  rev: stable
+  hooks:
+  - id: black
+- repo: https://gitlab.com/pycqa/flake8
+  rev: 3.7.9
+  hooks:
+    - id: flake8
+      additional_dependencies: [flake8-bugbear]

.travis.yml

@@ -1,24 +0,0 @@
-group: travis_latest
-language: python
-cache: pip
-python:
-    #- "3.4"
-    #- "3.5"
-    - "3.6"
-    - "3.7"
-install:
-  - pip install -r requirements.txt
-  - pip install -r requirements-dev.txt
-before_script:
-  # stop the build if there are Python syntax errors or undefined names
-  - flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics
-  # exit-zero treats all errors as warnings.  The GitHub editor is 127 chars wide
-  - flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-  - pip install pytest coverage pytest-cov
-script:
-  - python runtest.py
-after_success:
-  -  bash <(curl -s https://codecov.io/bash)
-notifications:
-  on_success: change
-  on_failure: change  # `always` will be the setting once code changes slow down

CONTRIBUTING.md

@@ -1,4 +1,17 @@
-Thank you for taking interest in contributing to kube-hunter!
+## Contribution Guide
+
+## Welcome Aboard
+
+Thank you for taking interest in contributing to kube-hunter!  
+This guide will walk you through the development process of kube-hunter.  
+
+## Setting Up
+
+kube-hunter is written in Python 3 and supports versions 3.6 and above.  
+You'll probably want to create a virtual environment for your local project.  
+Once you got your project and IDE set up, you can `make dev-deps` and start contributing!  
+You may also install a pre-commit hook to take care of linting - `pre-commit install`.  
+
 ## Issues
 
 - Feel free to open issues for any reason as long as you make it clear if this issue is about a bug/feature/hunter/question/comment.

Dockerfile

@@ -1,25 +1,29 @@
-FROM python:3.7-alpine3.10 as builder
+FROM python:3.8-alpine as builder
 
 RUN apk add --no-cache \
     linux-headers \
     tcpdump \
     build-base \
-    ebtables
+    ebtables \
+    make \
+    git && \
+    apk upgrade --no-cache
 
 WORKDIR /kube-hunter
-COPY ./requirements.txt /kube-hunter/.
-RUN pip install -r /kube-hunter/requirements.txt -t /kube-hunter
+COPY setup.py setup.cfg Makefile ./
+RUN make deps
 
-COPY . /kube-hunter
+COPY . .
+RUN make install
 
-FROM python:3.7-alpine3.10
+FROM python:3.8-alpine
 
 RUN apk add --no-cache \
-    tcpdump
-RUN apk upgrade --no-cache 
+    tcpdump \
+    ebtables && \
+    apk upgrade --no-cache
 
-COPY --from=builder /kube-hunter /kube-hunter
+COPY --from=builder /usr/local/lib/python3.8/site-packages /usr/local/lib/python3.8/site-packages
+COPY --from=builder /usr/local/bin/kube-hunter /usr/local/bin/kube-hunter
 
-WORKDIR /kube-hunter
-
-ENTRYPOINT ["python",  "kube-hunter.py"]
+ENTRYPOINT ["kube-hunter"]

Makefile

@@ -0,0 +1,67 @@
+.SILENT: clean
+
+NAME            := kube-hunter
+SRC             := kube_hunter
+ENTRYPOINT      := $(SRC)/__main__.py
+DIST            := dist
+COMPILED        := $(DIST)/$(NAME)
+STATIC_COMPILED := $(COMPILED).static
+
+
+.PHONY: deps
+deps:
+	requires=$(shell mktemp)
+	python setup.py -q dependencies > \$requires
+	pip install -r \$requires
+	rm \$requires
+
+.PHONY: dev-deps
+dev-deps:
+	pip install -r requirements-dev.txt
+
+.PHONY: lint
+lint:
+	black .
+	flake8
+
+.PHONY: lint-check
+lint-check:
+	flake8
+	black --check --diff .
+
+.PHONY: test
+test:
+	pytest
+
+.PHONY: build
+build:
+	python setup.py sdist bdist_wheel
+
+.PHONY: pyinstaller
+pyinstaller: deps
+	python setup.py pyinstaller
+
+.PHONY: staticx_deps
+staticx_deps:
+	command -v patchelf > /dev/null 2>&1 || (echo "patchelf is not available. install it in order to use staticx" && false)
+
+.PHONY: pyinstaller_static
+pyinstaller_static: staticx_deps pyinstaller
+	staticx $(COMPILED) $(STATIC_COMPILED)
+
+.PHONY: install
+install:
+	pip install .
+
+.PHONY: uninstall
+uninstall:
+	pip uninstall $(NAME)
+
+.PHONY: publish
+publish:
+	twine upload dist/*
+
+.PHONY: clean
+clean:
+	rm -rf build/ dist/ *.egg-info/ .eggs/ .pytest_cache/ .mypy_cache .coverage *.spec
+	find . -type d -name __pycache__ -exec rm -rf '{}' +

README.md

@@ -1,7 +1,8 @@
 ![kube-hunter](https://github.com/aquasecurity/kube-hunter/blob/master/kube-hunter.png)
 
-[![Build Status](https://travis-ci.org/aquasecurity/kube-hunter.svg?branch=master)](https://travis-ci.org/aquasecurity/kube-hunter)
+[![Build Status](https://github.com/aquasecurity/kube-hunter/workflows/Test/badge.svg)](https://github.com/aquasecurity/kube-hunter/actions)
 [![codecov](https://codecov.io/gh/aquasecurity/kube-hunter/branch/master/graph/badge.svg)](https://codecov.io/gh/aquasecurity/kube-hunter)
+[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 [![License](https://img.shields.io/github/license/aquasecurity/kube-hunter)](https://github.com/aquasecurity/kube-hunter/blob/master/LICENSE)
 [![Docker image](https://images.microbadger.com/badges/image/aquasec/kube-hunter.svg)](https://microbadger.com/images/aquasec/kube-hunter "Get your own image badge on microbadger.com")
 
@@ -13,7 +14,7 @@ kube-hunter hunts for security weaknesses in Kubernetes clusters. The tool was d
 
 **Explore vulnerabilities**: The kube-hunter knowledge base includes articles about discoverable vulnerabilities and issues. When kube-hunter reports an issue, it will show its VID (Vulnerability ID) so you can look it up in the KB at https://aquasecurity.github.io/kube-hunter/
 
-**Contribute**: We welcome contributions, especially new hunter modules that perform additional tests. If you would like to develop your modules please read [Guidelines For Developing Your First kube-hunter Module](src/README.md).
+**Contribute**: We welcome contributions, especially new hunter modules that perform additional tests. If you would like to develop your modules please read [Guidelines For Developing Your First kube-hunter Module](https://github.com/aquasecurity/kube-hunter/blob/master/CONTRIBUTING.md).
 
 [![kube-hunter demo video](https://github.com/aquasecurity/kube-hunter/blob/master/kube-hunter-screenshot.png)](https://youtu.be/s2-6rTkH8a8?t=57s)
 
@@ -33,6 +34,7 @@ Table of Contents
       * [Prerequisites](#prerequisites)
    * [Container](#container)
    * [Pod](#pod)
+* [Contribution](#contribution)
          
 ## Hunting
 
@@ -55,17 +57,17 @@ By default, kube-hunter will open an interactive session, in which you will be a
 1. **Remote scanning**
 
 To specify remote machines for hunting, select option 1 or use the `--remote` option. Example:
-`./kube-hunter.py --remote some.node.com`
+`kube-hunter --remote some.node.com`
 
 2. **Interface scanning**
 
 To specify interface scanning, you can use the `--interface` option (this will scan all of the machine's network interfaces). Example:
-`./kube-hunter.py --interface`
+`kube-hunter --interface`
 
 3. **Network scanning**
 
 To specify a specific CIDR to scan, use the `--cidr` option. Example:
-`./kube-hunter.py --cidr 192.168.0.0/24`
+`kube-hunter --cidr 192.168.0.0/24`
 
 ### Active Hunting
 
@@ -73,23 +75,23 @@ Active hunting is an option in which kube-hunter will exploit vulnerabilities it
 The main difference between normal and active hunting is that a normal hunt will never change the state of the cluster, while active hunting can potentially do state-changing operations on the cluster, **which could be harmful**.
 
 By default, kube-hunter does not do active hunting. To active hunt a cluster, use the `--active` flag. Example:
-`./kube-hunter.py --remote some.domain.com --active`
+`kube-hunter --remote some.domain.com --active`
 
 ### List of tests
 You can see the list of tests with the `--list` option: Example:
-`./kube-hunter.py --list`
+`kube-hunter --list`
 
 To see active hunting tests as well as passive:
-`./kube-hunter.py --list --active`
+`kube-hunter --list --active`
 
 ### Nodes Mapping 
 To see only a mapping of your nodes network, run with `--mapping` option. Example:
-`./kube-hunter.py --cidr 192.168.0.0/24 --mapping`
+`kube-hunter --cidr 192.168.0.0/24 --mapping`
 This will output all the Kubernetes nodes kube-hunter has found.
 
 ### Output
 To control logging, you can specify a log level, using the `--log` option. Example:
-`./kube-hunter.py --active --log WARNING`
+`kube-hunter --active --log WARNING`
 Available log levels are:
 
 * DEBUG
@@ -98,7 +100,7 @@ Available log levels are:
 
 ### Dispatching
 By default, the report will be dispatched to `stdout`, but you can specify different methods by using the `--dispatch` option. Example:
-`./kube-hunter.py --report json --dispatch http`
+`kube-hunter --report json --dispatch http`
 Available dispatch methods are:
 
 * stdout (default)
@@ -111,13 +113,27 @@ There are three methods for deploying kube-hunter:
 
 ### On Machine
 
-You can run the kube-hunter python code directly on your machine.
+You can run kube-hunter directly on your machine.
+
 #### Prerequisites
 
 You will need the following installed:
 * python 3.x
 * pip
 
+##### Install with pip
+
+Install:
+~~~
+pip install kube-hunter
+~~~
+
+Run:
+~~~
+kube-hunter
+~~~
+
+##### Run from source
 Clone the repository:
 ~~~
 git clone https://github.com/aquasecurity/kube-hunter.git
@@ -130,15 +146,18 @@ pip install -r requirements.txt
 ~~~
 
 Run:
-`./kube-hunter.py`
+~~~
+python3 kube_hunter
+~~~
 
 _If you want to use pyinstaller/py2exe you need to first run the install_imports.py script._
+
 ### Container
 Aqua Security maintains a containerized version of kube-hunter at `aquasec/kube-hunter`. This container includes this source code, plus an additional (closed source) reporting plugin for uploading results into a report that can be viewed at [kube-hunter.aquasec.com](https://kube-hunter.aquasec.com). Please note, that running the `aquasec/kube-hunter` container and uploading reports data are subject to additional [terms and conditions](https://kube-hunter.aquasec.com/eula.html).
 
 The Dockerfile in this repository allows you to build a containerized version without the reporting plugin.
 
-If you run the kube-hunter container with the host network, it will be able to probe all the interfaces on the host:
+If you run kube-hunter container with the host network, it will be able to probe all the interfaces on the host:
 
 `docker run -it --rm --network host aquasec/kube-hunter`
 
@@ -156,5 +175,8 @@ The example `job.yaml` file defines a Job that will run kube-hunter in a pod, us
 * Find the pod name with `kubectl describe job kube-hunter`
 * View the test results with `kubectl logs <pod name>`
 
+## Contribution 
+To read the contribution guidelines, <a href="https://github.com/aquasecurity/kube-hunter/blob/master/CONTRIBUTING.md"> Click here </a>
+
 ## License
 This repository is available under the [Apache License 2.0](https://github.com/aquasecurity/kube-hunter/blob/master/LICENSE).

docs/Gemfile.lock

@@ -206,7 +206,7 @@ GEM
       jekyll-seo-tag (~> 2.1)
     minitest (5.12.2)
     multipart-post (2.1.1)
-    nokogiri (1.10.4)
+    nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     octokit (4.14.0)
       sawyer (~> 0.8.0, >= 0.5.3)

docs/_kb/KHV005.md

@@ -12,7 +12,7 @@ Kubernetes API was accessed with Pod Service Account or without Authentication (
 
 ## Remediation
 
-Secure acess to your Kubernetes API.
+Secure access to your Kubernetes API.
 
 It is recommended to explicitly specify a Service Account for all of your workloads (`serviceAccountName` in `Pod.Spec`), and manage their permissions according to the least privilege principal.
 
@@ -21,4 +21,4 @@ Consider opting out automatic mounting of SA token using `automountServiceAccoun
 
 ## References
 
-- [Configure Service Accounts for Pods](https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/)
+- [Configure Service Accounts for Pods](https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/)

docs/_kb/KHV051.md

@@ -0,0 +1,40 @@
+---
+vid: KHV051
+title: Exposed Existing Privileged Containers Via Secure Kubelet Port
+categories: [Access Risk]
+---
+
+# {{ page.vid }} - {{ page.title }}
+
+## Issue description
+
+The kubelet is configured to allow anonymous (unauthenticated) requests to its HTTPs API. This may expose certain information and capabilities to an attacker with access to the kubelet API.
+
+A privileged container is given access to all devices on the host and can work at the kernel level. It is declared using the `Pod.spec.containers[].securityContext.privileged` attribute. This may be useful for infrastructure containers that perform setup work on the host, but is a dangerous attack vector.
+
+Furthermore, if the kubelet **and** the API server authentication mechanisms are (mis)configured such that anonymous requests can execute commands via the API within the containers (specifically privileged ones), a malicious actor can leverage such capabilities to do way more damage in the cluster than expected: e.g. start/modify process on host.
+
+## Remediation
+
+Ensure kubelet is protected using `--anonymous-auth=false` kubelet flag. Allow only legitimate users using `--client-ca-file` or `--authentication-token-webhook` kubelet flags. This is usually done by the installer or cloud provider.
+
+Minimize the use of privileged containers.
+
+Use Pod Security Policies to enforce using `privileged: false` policy. 
+
+Review the RBAC permissions to Kubernetes API server for the anonymous and default service account, including bindings.
+
+Ensure node(s) runs active filesystem monitoring.
+
+Set `--insecure-port=0` and remove `--insecure-bind-address=0.0.0.0` in the Kubernetes API server config.
+
+Remove `AlwaysAllow` from `--authorization-mode` in the Kubernetes API server config. Alternatively, set `--anonymous-auth=false` in the Kubernetes API server config; this will depend on the API server version running.
+
+## References
+
+- [Kubelet authentication/authorization](https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet-authentication-authorization/)
+- [Privileged mode for pod containers](https://kubernetes.io/docs/concepts/workloads/pods/pod/#privileged-mode-for-pod-containers)
+- [Pod Security Policies - Privileged](https://kubernetes.io/docs/concepts/policy/pod-security-policy/#privileged)
+- [Using RBAC Authorization](https://kubernetes.io/docs/reference/access-authn-authz/rbac/)
+- [KHV005 - Access to Kubernetes API]({{ site.baseurl }}{% link _kb/KHV005.md %})
+- [KHV036 - Anonymous Authentication]({{ site.baseurl }}{% link _kb/KHV036.md %})

docs/_kb/KHV052.md

@@ -0,0 +1,23 @@
+---
+vid: KHV052
+title: Exposed Pods
+categories: [Information Disclosure]
+---
+
+# {{ page.vid }} - {{ page.title }}
+
+## Issue description
+
+An attacker could view sensitive information about pods that are bound to a Node using the exposed /pods endpoint
+This can be done either by accessing the readonly port (default 10255), or from the secure kubelet port (10250)
+
+## Remediation
+
+Ensure kubelet is protected using `--anonymous-auth=false` kubelet flag. Allow only legitimate users using `--client-ca-file` or `--authentication-token-webhook` kubelet flags. This is usually done by the installer or cloud provider.
+
+Disable the readonly port by using `--read-only-port=0` kubelet flag.
+
+## References
+
+- [Kubelet configuration](https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/)
+- [Kubelet authentication/authorization](https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet-authentication-authorization/)

install_imports.py

@@ -1,17 +0,0 @@
-from os.path import basename
-import glob
-
-def get_py_files(path):
-    for py_file in glob.glob("{}*.py".format(path)):
-        if not py_file.endswith("__init__.py"):
-            yield basename(py_file)[:-3]
-
-def install_static_imports(path):
-    with open("{}__init__.py".format(path), 'w') as init_f:
-        for pf in get_py_files(path):
-            init_f.write("from .{} import *\n".format(pf))
-
-install_static_imports("src/modules/discovery/")
-install_static_imports("src/modules/hunting/")
-install_static_imports("src/modules/report/")
-install_static_imports("plugins/")

job.yaml

@@ -8,7 +8,7 @@ spec:
       containers:
       - name: kube-hunter
         image: aquasec/kube-hunter 
-        command: ["python", "kube-hunter.py"]
+        command: ["kube-hunter"]
         args: ["--pod"]
       restartPolicy: Never
   backoffLimit: 4

kube-hunter.py

@@ -1,149 +0,0 @@
-#!/usr/bin/env python3
-import argparse
-import logging
-import threading
-
-
-parser = argparse.ArgumentParser(description='Kube-Hunter - hunts for security weaknesses in Kubernetes clusters')
-parser.add_argument('--list', action="store_true", help="displays all tests in kubehunter (add --active flag to see active tests)")
-parser.add_argument('--interface', action="store_true", help="set hunting of all network interfaces")
-parser.add_argument('--pod', action="store_true", help="set hunter as an insider pod")
-parser.add_argument('--quick', action="store_true", help="Prefer quick scan (subnet 24)")
-parser.add_argument('--include-patched-versions', action="store_true", help="Don't skip patched versions when scanning")
-parser.add_argument('--cidr', type=str, help="set an ip range to scan, example: 192.168.0.0/16")
-parser.add_argument('--mapping', action="store_true", help="outputs only a mapping of the cluster's nodes")
-parser.add_argument('--remote', nargs='+', metavar="HOST", default=list(), help="one or more remote ip/dns to hunt")
-parser.add_argument('--active', action="store_true", help="enables active hunting")
-parser.add_argument('--log', type=str, metavar="LOGLEVEL", default='INFO', help="set log level, options are: debug, info, warn, none")
-parser.add_argument('--report', type=str, default='plain', help="set report type, options are: plain, yaml, json")
-parser.add_argument('--dispatch', type=str, default='stdout', help="where to send the report to, options are: stdout, http (set KUBEHUNTER_HTTP_DISPATCH_URL and KUBEHUNTER_HTTP_DISPATCH_METHOD environment variables to configure)")
-parser.add_argument('--statistics', action="store_true", help="set hunting statistics")
-
-import plugins
-
-config = parser.parse_args()
-
-try:
-    loglevel = getattr(logging, config.log.upper())
-except:
-    pass
-if config.log.lower() != "none":
-    logging.basicConfig(level=loglevel, format='%(message)s', datefmt='%H:%M:%S')
-
-from src.modules.report.plain import PlainReporter
-from src.modules.report.yaml import YAMLReporter
-from src.modules.report.json import JSONReporter
-reporters = {
-    'yaml': YAMLReporter,
-    'json': JSONReporter,
-    'plain': PlainReporter
-}
-if config.report.lower() in reporters.keys():
-    config.reporter = reporters[config.report.lower()]()
-else:
-    logging.warning('Unknown reporter selected, using plain')
-    config.reporter = reporters['plain']()
-
-from src.modules.report.dispatchers import STDOUTDispatcher, HTTPDispatcher
-dispatchers = {
-    'stdout': STDOUTDispatcher,
-    'http': HTTPDispatcher
-}
-if config.dispatch.lower() in dispatchers.keys():
-    config.dispatcher = dispatchers[config.dispatch.lower()]()
-else:
-    logging.warning('Unknown dispatcher selected, using stdout')
-    config.dispatcher = dispatchers['stdout']()
-
-from src.core.events import handler
-from src.core.events.types import HuntFinished, HuntStarted
-from src.modules.discovery.hosts import RunningAsPodEvent, HostScanEvent
-import src
-
-
-def interactive_set_config():
-    """Sets config manually, returns True for success"""
-    options = [("Remote scanning", "scans one or more specific IPs or DNS names"),
-    ("Interface scanning","scans subnets on all local network interfaces"),
-    ("IP range scanning","scans a given IP range")]
-    
-    print("Choose one of the options below:")
-    for i, (option, explanation) in enumerate(options):
-        print("{}. {} ({})".format(i+1, option.ljust(20), explanation))
-    choice = input("Your choice: ")
-    if choice == '1':
-        config.remote = input("Remotes (separated by a ','): ").replace(' ', '').split(',')
-    elif choice == '2':
-        config.interface = True
-    elif choice == '3': 
-        config.cidr = input("CIDR (example - 192.168.1.0/24): ").replace(' ', '')
-    else: 
-        return False
-    return True
-
-
-def list_hunters():
-    print("\nPassive Hunters:\n----------------")
-    for hunter, docs in handler.passive_hunters.items():
-        name, doc = hunter.parse_docs(docs)
-        print("* {}\n  {}\n".format(name, doc))
-
-    if config.active:
-        print("\n\nActive Hunters:\n---------------")
-        for hunter, docs in handler.active_hunters.items():
-            name, doc = hunter.parse_docs(docs)
-            print("* {}\n  {}\n".format( name, doc))
-
-
-global hunt_started_lock
-hunt_started_lock = threading.Lock()
-hunt_started = False
-
-
-def main():
-    global hunt_started
-    scan_options = [
-        config.pod, 
-        config.cidr,
-        config.remote, 
-        config.interface
-    ]
-    try:
-        if config.list:
-            list_hunters()
-            return
-
-        if not any(scan_options):
-            if not interactive_set_config(): return
-        
-        with hunt_started_lock:
-            hunt_started = True
-        handler.publish_event(HuntStarted())
-        if config.pod:
-            handler.publish_event(RunningAsPodEvent())
-        else:
-            handler.publish_event(HostScanEvent())
-        
-        # Blocking to see discovery output
-        handler.join()
-    except KeyboardInterrupt:
-        logging.debug("Kube-Hunter stopped by user")
-    # happens when running a container without interactive option
-    except EOFError:
-        logging.error("\033[0;31mPlease run again with -it\033[0m")
-    finally:
-        hunt_started_lock.acquire()
-        if hunt_started:
-            hunt_started_lock.release()
-            handler.publish_event(HuntFinished())
-            handler.join()
-            handler.free()
-            logging.debug("Cleaned Queue")
-        else:
-            hunt_started_lock.release()
-
-
-
-if __name__ == '__main__':
-        main()
-

kube-hunter.py

@@ -0,0 +1 @@
+kube_hunter/__main__.py

kube_hunter/README.md

@@ -5,9 +5,7 @@ First, let's go through kube-hunter's basic architecture.
 ### Directory Structure  
 ~~~  
 kube-hunter/  
-        plugins/  
-           # your plugin
-        src/  
+        kube_hunter/  
             core/  
             modules/  
                 discovery/  
@@ -16,7 +14,7 @@ kube-hunter/
                     # your module
                 report/
                     # your module
-        kube-hunter.py  
+            __main__.py  
 ~~~  
 ### Design Pattern   
 Kube-hunter is built with the [Observer Pattern](https://en.wikipedia.org/wiki/Observer_pattern).    
@@ -77,10 +75,10 @@ in order to prevent circular dependency bug.
 
 Following the above example, let's figure out the imports:  
 ```python  
-from ...core.types import Hunter  
-from ...core.events import handler  
+from kube_hunter.core.types import Hunter  
+from kube_hunter.core.events import handler  
   
-from ...core.events.types import OpenPortEvent  
+from kube_hunter.core.events.types import OpenPortEvent  
   
 @handler.subscribe(OpenPortEvent, predicate=lambda event: event.port == 30000)  
 class KubeDashboardDiscovery(Hunter):  
@@ -92,13 +90,13 @@ class KubeDashboardDiscovery(Hunter):
 As you can see, all of the types here come from the `core` module. 
   
 ### Core Imports  
-relative import: `...core.events`  
+Absolute import: `kube_hunter.core.events`  
 
 |Name|Description|
 |---|---|
 |handler|Core object for using events, every module should import this object|
 
-relative import `...core.events.types`  
+Absolute import `kube_hunter.core.events.types`  
 
 |Name|Description|
 |---|---|
@@ -106,7 +104,7 @@ relative import `...core.events.types`
 |Vulnerability|Base class for defining a new vulnerability|
 |OpenPortEvent|Published when a new port is discovered. open port is assigned to the `port ` attribute|
   
-relative import: `...core.types`  
+Absolute import: `kube_hunter.core.types`  
 
 |Type|Description|
 |---|---|
@@ -192,7 +190,7 @@ To prove a vulnerability, create an `ActiveHunter` that is subscribed to the vul
 A filter can change an event's attribute or remove it completely before it gets published to Hunters.
 
 To create a filter:
-* create a class that inherits from `EventFilterBase` (from `src.core.events.types`)   
+* create a class that inherits from `EventFilterBase` (from `kube_hunter.core.events.types`)   
 * use `@handler.subscribe(Event)` to filter a specific `Event`
 * define a `__init__(self, event)` method, and save the event in your class  
 * implement `self.execute(self)` method, __returns a new event, or None to remove event__  
@@ -206,10 +204,10 @@ To prevent an event from being published, return `None` from the execute method
 To alter event attributes, return a new event, based on the `self.event` after your modifications, it will replace the event itself before it is published.  
 __Make sure to return the event from the execute method, or the event will not get published__  
  
-For example, if you don't want to hunt services found on a localhost IP, you can create the following module, in the `src/modules/report/`
+For example, if you don't want to hunt services found on a localhost IP, you can create the following module, in the `kube_hunter/modules/report/`
 ```python
-from src.core.events import handler
-from src.core.events.types import Service, EventFilterBase
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Service, EventFilterBase
 
 @handler.subscribe(Service)
 class LocalHostFilter(EventFilterBase):
@@ -224,9 +222,9 @@ That means other Hunters that are subscribed to this Service will not get trigge
 That opens up a wide variety of possible operations, as this not only can __filter out__ events, but you can actually __change event attributes__, for example:
 
 ```python
-from src.core.events import handler
-from src.core.types import InformationDisclosure
-from src.core.events.types import Vulnerability, EventFilterBase
+from kube_hunter.core.events import handler
+from kube_hunter.core.types import InformationDisclosure
+from kube_hunter.core.events.types import Vulnerability, EventFilterBase
 
 @handler.subscribe(Vulnerability)
 class CensorInformation(EventFilterBase):
@@ -247,5 +245,5 @@ __Note: In filters, you should not change attributes in the event.previous. This
 Although we haven't been rigorous about this in the past, please add tests to support your code changes. Tests are executed like this: 
 
 ```bash
-python runtest.py
+pytest
 ```

kube_hunter/__main__.py

@@ -0,0 +1,129 @@
+#!/usr/bin/env python3
+# flake8: noqa: E402
+
+import logging
+import threading
+
+from kube_hunter.conf import Config, set_config
+from kube_hunter.conf.parser import parse_args
+from kube_hunter.conf.logging import setup_logger
+
+from kube_hunter.plugins import initialize_plugin_manager
+
+pm = initialize_plugin_manager()
+# Using a plugin hook for adding arguments before parsing
+args = parse_args(add_args_hook=pm.hook.parser_add_arguments)
+config = Config(
+    active=args.active,
+    cidr=args.cidr,
+    include_patched_versions=args.include_patched_versions,
+    interface=args.interface,
+    log_file=args.log_file,
+    mapping=args.mapping,
+    network_timeout=args.network_timeout,
+    pod=args.pod,
+    quick=args.quick,
+    remote=args.remote,
+    statistics=args.statistics,
+)
+setup_logger(args.log, args.log_file)
+set_config(config)
+
+# Running all other registered plugins before execution
+pm.hook.load_plugin(args=args)
+
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import HuntFinished, HuntStarted
+from kube_hunter.modules.discovery.hosts import RunningAsPodEvent, HostScanEvent
+from kube_hunter.modules.report import get_reporter, get_dispatcher
+
+logger = logging.getLogger(__name__)
+config.dispatcher = get_dispatcher(args.dispatch)
+config.reporter = get_reporter(args.report)
+
+
+def interactive_set_config():
+    """Sets config manually, returns True for success"""
+    options = [
+        ("Remote scanning", "scans one or more specific IPs or DNS names"),
+        ("Interface scanning", "scans subnets on all local network interfaces"),
+        ("IP range scanning", "scans a given IP range"),
+    ]
+
+    print("Choose one of the options below:")
+    for i, (option, explanation) in enumerate(options):
+        print("{}. {} ({})".format(i + 1, option.ljust(20), explanation))
+    choice = input("Your choice: ")
+    if choice == "1":
+        config.remote = input("Remotes (separated by a ','): ").replace(" ", "").split(",")
+    elif choice == "2":
+        config.interface = True
+    elif choice == "3":
+        config.cidr = (
+            input("CIDR separated by a ',' (example - 192.168.0.0/16,!192.168.0.8/32,!192.168.1.0/24): ")
+            .replace(" ", "")
+            .split(",")
+        )
+    else:
+        return False
+    return True
+
+
+def list_hunters():
+    print("\nPassive Hunters:\n----------------")
+    for hunter, docs in handler.passive_hunters.items():
+        name, doc = hunter.parse_docs(docs)
+        print(f"* {name}\n  {doc}\n")
+
+    if config.active:
+        print("\n\nActive Hunters:\n---------------")
+        for hunter, docs in handler.active_hunters.items():
+            name, doc = hunter.parse_docs(docs)
+            print(f"* {name}\n  {doc}\n")
+
+
+hunt_started_lock = threading.Lock()
+hunt_started = False
+
+
+def main():
+    global hunt_started
+    scan_options = [config.pod, config.cidr, config.remote, config.interface]
+    try:
+        if args.list:
+            list_hunters()
+            return
+
+        if not any(scan_options):
+            if not interactive_set_config():
+                return
+
+        with hunt_started_lock:
+            hunt_started = True
+        handler.publish_event(HuntStarted())
+        if config.pod:
+            handler.publish_event(RunningAsPodEvent())
+        else:
+            handler.publish_event(HostScanEvent())
+
+        # Blocking to see discovery output
+        handler.join()
+    except KeyboardInterrupt:
+        logger.debug("Kube-Hunter stopped by user")
+    # happens when running a container without interactive option
+    except EOFError:
+        logger.error("\033[0;31mPlease run again with -it\033[0m")
+    finally:
+        hunt_started_lock.acquire()
+        if hunt_started:
+            hunt_started_lock.release()
+            handler.publish_event(HuntFinished())
+            handler.join()
+            handler.free()
+            logger.debug("Cleaned Queue")
+        else:
+            hunt_started_lock.release()
+
+
+if __name__ == "__main__":
+    main()

kube_hunter/conf/__init__.py

@@ -0,0 +1,52 @@
+from dataclasses import dataclass
+from typing import Any, Optional
+
+
+@dataclass
+class Config:
+    """Config is a configuration container.
+    It contains the following fields:
+    - active: Enable active hunters
+    - cidr: Network subnets to scan
+    - dispatcher: Dispatcher object
+    - include_patched_version: Include patches in version comparison
+    - interface: Interface scanning mode
+    - list_hunters: Print a list of existing hunters
+    - log_level: Log level
+    - log_file: Log File path
+    - mapping: Report only found components
+    - network_timeout: Timeout for network operations
+    - pod: From pod scanning mode
+    - quick: Quick scanning mode
+    - remote: Hosts to scan
+    - report: Output format
+    - statistics: Include hunters statistics
+    """
+
+    active: bool = False
+    cidr: Optional[str] = None
+    dispatcher: Optional[Any] = None
+    include_patched_versions: bool = False
+    interface: bool = False
+    log_file: Optional[str] = None
+    mapping: bool = False
+    network_timeout: float = 5.0
+    pod: bool = False
+    quick: bool = False
+    remote: Optional[str] = None
+    reporter: Optional[Any] = None
+    statistics: bool = False
+
+
+_config: Optional[Config] = None
+
+
+def get_config() -> Config:
+    if not _config:
+        raise ValueError("Configuration is not initialized")
+    return _config
+
+
+def set_config(new_config: Config) -> None:
+    global _config
+    _config = new_config

kube_hunter/conf/logging.py

@@ -0,0 +1,29 @@
+import logging
+
+DEFAULT_LEVEL = logging.INFO
+DEFAULT_LEVEL_NAME = logging.getLevelName(DEFAULT_LEVEL)
+LOG_FORMAT = "%(asctime)s %(levelname)s %(name)s %(message)s"
+
+# Suppress logging from scapy
+logging.getLogger("scapy.runtime").setLevel(logging.CRITICAL)
+logging.getLogger("scapy.loading").setLevel(logging.CRITICAL)
+
+
+def setup_logger(level_name, logfile):
+    # Remove any existing handlers
+    # Unnecessary in Python 3.8 since `logging.basicConfig` has `force` parameter
+    for h in logging.getLogger().handlers[:]:
+        h.close()
+        logging.getLogger().removeHandler(h)
+
+    if level_name.upper() == "NONE":
+        logging.disable(logging.CRITICAL)
+    else:
+        log_level = getattr(logging, level_name.upper(), None)
+        log_level = log_level if isinstance(log_level, int) else None
+        if logfile is None:
+            logging.basicConfig(level=log_level or DEFAULT_LEVEL, format=LOG_FORMAT)
+        else:
+            logging.basicConfig(filename=logfile, level=log_level or DEFAULT_LEVEL, format=LOG_FORMAT)
+        if not log_level:
+            logging.warning(f"Unknown log level '{level_name}', using {DEFAULT_LEVEL_NAME}")

kube_hunter/conf/parser.py

@@ -0,0 +1,101 @@
+from argparse import ArgumentParser
+from kube_hunter.plugins import hookimpl
+
+
+@hookimpl
+def parser_add_arguments(parser):
+    """
+    This is the default hook implementation for parse_add_argument
+    Contains initialization for all default arguments
+    """
+    parser.add_argument(
+        "--list",
+        action="store_true",
+        help="Displays all tests in kubehunter (add --active flag to see active tests)",
+    )
+
+    parser.add_argument("--interface", action="store_true", help="Set hunting on all network interfaces")
+
+    parser.add_argument("--pod", action="store_true", help="Set hunter as an insider pod")
+
+    parser.add_argument("--quick", action="store_true", help="Prefer quick scan (subnet 24)")
+
+    parser.add_argument(
+        "--include-patched-versions",
+        action="store_true",
+        help="Don't skip patched versions when scanning",
+    )
+
+    parser.add_argument(
+        "--cidr",
+        type=str,
+        help="Set an IP range to scan/ignore, example: '192.168.0.0/24,!192.168.0.8/32,!192.168.0.16/32'",
+    )
+
+    parser.add_argument(
+        "--mapping",
+        action="store_true",
+        help="Outputs only a mapping of the cluster's nodes",
+    )
+
+    parser.add_argument(
+        "--remote",
+        nargs="+",
+        metavar="HOST",
+        default=list(),
+        help="One or more remote ip/dns to hunt",
+    )
+
+    parser.add_argument("--active", action="store_true", help="Enables active hunting")
+
+    parser.add_argument(
+        "--log",
+        type=str,
+        metavar="LOGLEVEL",
+        default="INFO",
+        help="Set log level, options are: debug, info, warn, none",
+    )
+
+    parser.add_argument(
+        "--log-file",
+        type=str,
+        default=None,
+        help="Path to a log file to output all logs to",
+    )
+
+    parser.add_argument(
+        "--report",
+        type=str,
+        default="plain",
+        help="Set report type, options are: plain, yaml, json",
+    )
+
+    parser.add_argument(
+        "--dispatch",
+        type=str,
+        default="stdout",
+        help="Where to send the report to, options are: "
+        "stdout, http (set KUBEHUNTER_HTTP_DISPATCH_URL and "
+        "KUBEHUNTER_HTTP_DISPATCH_METHOD environment variables to configure)",
+    )
+
+    parser.add_argument("--statistics", action="store_true", help="Show hunting statistics")
+
+    parser.add_argument("--network-timeout", type=float, default=5.0, help="network operations timeout")
+
+
+def parse_args(add_args_hook):
+    """
+    Function handles all argument parsing
+
+    @param add_arguments: hook for adding arguments to it's given ArgumentParser parameter
+    @return: parsed arguments dict
+    """
+    parser = ArgumentParser(description="kube-hunter - hunt for security weaknesses in Kubernetes clusters")
+    # adding all arguments to the parser
+    add_args_hook(parser=parser)
+
+    args = parser.parse_args()
+    if args.cidr:
+        args.cidr = args.cidr.replace(" ", "").split(",")
+    return args

kube_hunter/core/__init__.py

@@ -1,2 +1,3 @@
+# flake8: noqa: E402
 from . import types
 from . import events

kube_hunter/core/events/__init__.py

@@ -0,0 +1,3 @@
+# flake8: noqa: E402
+from .handler import EventQueue, handler
+from . import types

kube_hunter/core/events/handler.py

@@ -4,17 +4,17 @@ from collections import defaultdict
 from queue import Queue
 from threading import Thread
 
-from __main__ import config
+from kube_hunter.conf import get_config
+from kube_hunter.core.types import ActiveHunter, HunterBase
+from kube_hunter.core.events.types import Vulnerability, EventFilterBase
 
-from ..types import ActiveHunter, HunterBase
-
-from ...core.events.types import Vulnerability, EventFilterBase
+logger = logging.getLogger(__name__)
 
 
 # Inherits Queue object, handles events asynchronously
-class EventQueue(Queue, object):
+class EventQueue(Queue):
     def __init__(self, num_worker=10):
-        super(EventQueue, self).__init__()
+        super().__init__()
         self.passive_hunters = dict()
         self.active_hunters = dict()
         self.all_hunters = dict()
@@ -50,14 +50,17 @@ class EventQueue(Queue, object):
             def __new__unsubscribe_self(self, cls):
                 handler.hooks[event].remove((hook, predicate))
                 return object.__new__(self)
+
             hook.__new__ = __new__unsubscribe_self
 
             self.subscribe_event(event, hook=hook, predicate=predicate)
             return hook
+
         return wrapper
 
     # getting uninstantiated event object
     def subscribe_event(self, event, hook=None, predicate=None):
+        config = get_config()
         if ActiveHunter in hook.__mro__:
             if not config.active:
                 return
@@ -72,23 +75,22 @@ class EventQueue(Queue, object):
         if EventFilterBase in hook.__mro__:
             if hook not in self.filters[event]:
                 self.filters[event].append((hook, predicate))
-                logging.debug('{} filter subscribed to {}'.format(hook, event))
+                logger.debug(f"{hook} filter subscribed to {event}")
 
         # registering hunters
         elif hook not in self.hooks[event]:
             self.hooks[event].append((hook, predicate))
-            logging.debug('{} subscribed to {}'.format(hook, event))
-
+            logger.debug(f"{hook} subscribed to {event}")
 
     def apply_filters(self, event):
-        # if filters are subscribed, apply them on the event 
+        # if filters are subscribed, apply them on the event
         for hooked_event in self.filters.keys():
             if hooked_event in event.__class__.__mro__:
                 for filter_hook, predicate in self.filters[hooked_event]:
                     if predicate and not predicate(event):
                         continue
 
-                    logging.debug('Event {} got filtered with {}'.format(event.__class__, filter_hook))
+                    logger.debug(f"Event {event.__class__} filtered with {filter_hook}")
                     event = filter_hook(event).execute()
                     # if filter decided to remove event, returning None
                     if not event:
@@ -97,12 +99,14 @@ class EventQueue(Queue, object):
 
     # getting instantiated event object
     def publish_event(self, event, caller=None):
+        config = get_config()
+
         # setting event chain
         if caller:
             event.previous = caller.event
             event.hunter = caller.__class__
 
-        # applying filters on the event, before publishing it to subscribers. 
+        # applying filters on the event, before publishing it to subscribers.
         # if filter returned None, not proceeding to publish
         event = self.apply_filters(event)
         if event:
@@ -121,7 +125,7 @@ class EventQueue(Queue, object):
                             if Vulnerability in event.__class__.__mro__:
                                 caller.__class__.publishedVulnerabilities += 1
 
-                        logging.debug('Event {} got published with {}'.format(event.__class__, event))
+                        logger.debug(f"Event {event.__class__} got published with {event}")
                         self.put(hook(event))
 
     # executes callbacks on dedicated thread as a daemon
@@ -129,21 +133,22 @@ class EventQueue(Queue, object):
         while self.running:
             try:
                 hook = self.get()
+                logger.debug(f"Executing {hook.__class__} with {hook.event.__dict__}")
                 hook.execute()
             except Exception as ex:
-                logging.debug("Exception: {} - {}".format(hook.__class__, ex))
+                logger.debug(ex, exc_info=True)
             finally:
                 self.task_done()
-        logging.debug("closing thread...")
+        logger.debug("closing thread...")
 
     def notifier(self):
         time.sleep(2)
         # should consider locking on unfinished_tasks
         while self.unfinished_tasks > 0:
-            logging.debug("{} tasks left".format(self.unfinished_tasks))
+            logger.debug(f"{self.unfinished_tasks} tasks left")
             time.sleep(3)
             if self.unfinished_tasks == 1:
-                logging.debug("final hook is hanging")
+                logger.debug("final hook is hanging")
 
     # stops execution of all daemons
     def free(self):
@@ -151,4 +156,5 @@ class EventQueue(Queue, object):
         with self.mutex:
             self.queue.clear()
 
+
 handler = EventQueue(800)

kube_hunter/core/events/types.py

@@ -1,7 +1,23 @@
+import logging
 import threading
-from src.core.types import InformationDisclosure, DenialOfService, RemoteCodeExec, IdentityTheft, PrivilegeEscalation, AccessRisk, UnauthenticatedAccess, KubernetesCluster
+import requests
 
-class EventFilterBase(object):
+from kube_hunter.conf import get_config
+from kube_hunter.core.types import (
+    InformationDisclosure,
+    DenialOfService,
+    RemoteCodeExec,
+    IdentityTheft,
+    PrivilegeEscalation,
+    AccessRisk,
+    UnauthenticatedAccess,
+    KubernetesCluster,
+)
+
+logger = logging.getLogger(__name__)
+
+
+class EventFilterBase:
     def __init__(self, event):
         self.event = event
 
@@ -11,7 +27,8 @@ class EventFilterBase(object):
     def execute(self):
         return self.event
 
-class Event(object):
+
+class Event:
     def __init__(self):
         self.previous = None
         self.hunter = None
@@ -45,11 +62,7 @@ class Event(object):
         return history
 
 
-""" Event Types """
-# TODO: make proof an abstract method.
-
-
-class Service(object):
+class Service:
     def __init__(self, name, path="", secure=True):
         self.name = name
         self.secure = secure
@@ -66,19 +79,21 @@ class Service(object):
         return self.__doc__
 
 
-class Vulnerability(object):
-    severity = dict({
-        InformationDisclosure: "medium",
-        DenialOfService: "medium",
-        RemoteCodeExec: "high",
-        IdentityTheft: "high",
-        PrivilegeEscalation: "high",
-        AccessRisk: "low",
-        UnauthenticatedAccess: "low"
-    })
+class Vulnerability:
+    severity = dict(
+        {
+            InformationDisclosure: "medium",
+            DenialOfService: "medium",
+            RemoteCodeExec: "high",
+            IdentityTheft: "high",
+            PrivilegeEscalation: "high",
+            AccessRisk: "low",
+            UnauthenticatedAccess: "low",
+        }
+    )
 
     # TODO: make vid mandatory once migration is done
-    def __init__(self, component, name, category=None, vid=None):
+    def __init__(self, component, name, category=None, vid="None"):
         self.vid = vid
         self.component = component
         self.category = category
@@ -102,37 +117,58 @@ class Vulnerability(object):
     def get_severity(self):
         return self.severity.get(self.category, "low")
 
-global event_id_count_lock
+
 event_id_count_lock = threading.Lock()
 event_id_count = 0
 
-""" Discovery/Hunting Events """
-
 
 class NewHostEvent(Event):
     def __init__(self, host, cloud=None):
         global event_id_count
         self.host = host
-        self.cloud = cloud
+        self.cloud_type = cloud
 
         with event_id_count_lock:
             self.event_id = event_id_count
             event_id_count += 1
 
+    @property
+    def cloud(self):
+        if not self.cloud_type:
+            self.cloud_type = self.get_cloud()
+        return self.cloud_type
+
+    def get_cloud(self):
+        config = get_config()
+        try:
+            logger.debug("Checking whether the cluster is deployed on azure's cloud")
+            # Leverage 3rd tool https://github.com/blrchen/AzureSpeed for Azure cloud ip detection
+            result = requests.get(
+                f"https://api.azurespeed.com/api/region?ipOrUrl={self.host}",
+                timeout=config.network_timeout,
+            ).json()
+            return result["cloud"] or "NoCloud"
+        except requests.ConnectionError:
+            logger.info("Failed to connect cloud type service", exc_info=True)
+        except Exception:
+            logger.warning(f"Unable to check cloud of {self.host}", exc_info=True)
+        return "NoCloud"
+
     def __str__(self):
         return str(self.host)
-    
+
     # Event's logical location to be used mainly for reports.
     def location(self):
         return str(self.host)
 
+
 class OpenPortEvent(Event):
     def __init__(self, port):
         self.port = port
-    
+
     def __str__(self):
         return str(self.port)
-    
+
     # Event's logical location to be used mainly for reports.
     def location(self):
         if self.host:
@@ -154,11 +190,17 @@ class ReportDispatched(Event):
     pass
 
 
-""" Core Vulnerabilities """
 class K8sVersionDisclosure(Vulnerability, Event):
     """The kubernetes version could be obtained from the {} endpoint """
+
     def __init__(self, version, from_endpoint, extra_info=""):
-        Vulnerability.__init__(self, KubernetesCluster, "K8s Version Disclosure", category=InformationDisclosure, vid="KHV002")
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            "K8s Version Disclosure",
+            category=InformationDisclosure,
+            vid="KHV002",
+        )
         self.version = version
         self.from_endpoint = from_endpoint
         self.extra_info = extra_info

kube_hunter/core/types.py

@@ -1,4 +1,4 @@
-class HunterBase(object):
+class HunterBase:
     publishedVulnerabilities = 0
 
     @staticmethod
@@ -6,10 +6,10 @@ class HunterBase(object):
         """returns tuple of (name, docs)"""
         if not docs:
             return __name__, "<no documentation>"
-        docs = docs.strip().split('\n')
+        docs = docs.strip().split("\n")
         for i, line in enumerate(docs):
             docs[i] = line.strip()
-        return docs[0], ' '.join(docs[1:]) if len(docs[1:]) else "<no documentation>"
+        return docs[0], " ".join(docs[1:]) if len(docs[1:]) else "<no documentation>"
 
     @classmethod
     def get_name(cls):
@@ -32,50 +32,57 @@ class Discovery(HunterBase):
     pass
 
 
-"""Kubernetes Components"""
-class KubernetesCluster():
+class KubernetesCluster:
     """Kubernetes Cluster"""
+
     name = "Kubernetes Cluster"
 
-class KubectlClient():
+
+class KubectlClient:
     """The kubectl client binary is used by the user to interact with the cluster"""
+
     name = "Kubectl Client"
 
+
 class Kubelet(KubernetesCluster):
     """The kubelet is the primary "node agent" that runs on each node"""
+
     name = "Kubelet"
 
 
 class Azure(KubernetesCluster):
     """Azure Cluster"""
+
     name = "Azure"
 
 
-""" Categories """
-class InformationDisclosure(object):
+class InformationDisclosure:
     name = "Information Disclosure"
 
 
-class RemoteCodeExec(object):
+class RemoteCodeExec:
     name = "Remote Code Execution"
 
 
-class IdentityTheft(object):
+class IdentityTheft:
     name = "Identity Theft"
 
 
-class UnauthenticatedAccess(object):
+class UnauthenticatedAccess:
     name = "Unauthenticated Access"
 
 
-class AccessRisk(object):
+class AccessRisk:
     name = "Access Risk"
 
 
 class PrivilegeEscalation(KubernetesCluster):
     name = "Privilege Escalation"
 
-class DenialOfService(object):
+
+class DenialOfService:
     name = "Denial of Service"
 
-from .events import handler # import is in the bottom to break import loops
+
+# import is in the bottom to break import loops
+from .events import handler  # noqa

kube_hunter/modules/__init__.py

@@ -1,3 +1,4 @@
+# flake8: noqa: E402
 from . import report
 from . import discovery
 from . import hunting

kube_hunter/modules/discovery/__init__.py

@@ -0,0 +1,11 @@
+# flake8: noqa: E402
+from . import (
+    apiserver,
+    dashboard,
+    etcd,
+    hosts,
+    kubectl,
+    kubelet,
+    ports,
+    proxy,
+)

kube_hunter/modules/discovery/apiserver.py

@@ -1,15 +1,20 @@
-import json
-import requests
 import logging
+import requests
 
-from ...core.types import Discovery
-from ...core.events import handler
-from ...core.events.types import OpenPortEvent, Service, Event, EventFilterBase
+from kube_hunter.core.types import Discovery
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import OpenPortEvent, Service, Event, EventFilterBase
+
+from kube_hunter.conf import get_config
 
 KNOWN_API_PORTS = [443, 6443, 8080]
 
+logger = logging.getLogger(__name__)
+
+
 class K8sApiService(Service, Event):
     """A Kubernetes API service"""
+
     def __init__(self, protocol="https"):
         Service.__init__(self, name="Unrecognized K8s API")
         self.protocol = protocol
@@ -17,12 +22,15 @@ class K8sApiService(Service, Event):
 
 class ApiServer(Service, Event):
     """The API server is in charge of all operations on the cluster."""
+
     def __init__(self):
         Service.__init__(self, name="API Server")
         self.protocol = "https"
-        
+
+
 class MetricsServer(Service, Event):
-    """The Metrics server is in charge of providing resource usage metrics for pods and nodes to the API server."""
+    """The Metrics server is in charge of providing resource usage metrics for pods and nodes to the API server"""
+
     def __init__(self):
         Service.__init__(self, name="Metrics Server")
         self.protocol = "https"
@@ -35,43 +43,46 @@ class ApiServiceDiscovery(Discovery):
     """API Service Discovery
     Checks for the existence of K8s API Services
     """
+
     def __init__(self, event):
         self.event = event
         self.session = requests.Session()
         self.session.verify = False
-    
+
     def execute(self):
-        logging.debug("Attempting to discover an API service on {}:{}".format(self.event.host, self.event.port))
+        logger.debug(f"Attempting to discover an API service on {self.event.host}:{self.event.port}")
         protocols = ["http", "https"]
         for protocol in protocols:
             if self.has_api_behaviour(protocol):
                 self.publish_event(K8sApiService(protocol))
 
     def has_api_behaviour(self, protocol):
+        config = get_config()
         try:
-            r = self.session.get("{}://{}:{}".format(protocol, self.event.host, self.event.port))
-            if ('k8s' in r.text) or ('"code"' in r.text and r.status_code != 200):
+            r = self.session.get(f"{protocol}://{self.event.host}:{self.event.port}", timeout=config.network_timeout)
+            if ("k8s" in r.text) or ('"code"' in r.text and r.status_code != 200):
                 return True
         except requests.exceptions.SSLError:
-            logging.debug("{} protocol not accepted on {}:{}".format(protocol, self.event.host, self.event.port))
-        except Exception as e:
-            logging.debug("{} on {}:{}".format(e, self.event.host, self.event.port))
+            logger.debug(f"{[protocol]} protocol not accepted on {self.event.host}:{self.event.port}")
+        except Exception:
+            logger.debug(f"Failed probing {self.event.host}:{self.event.port}", exc_info=True)
 
 
 # Acts as a Filter for services, In the case that we can classify the API,
 # We swap the filtered event with a new corresponding Service to next be published
 # The classification can be regarding the context of the execution,
 # Currently we classify: Metrics Server and Api Server
-# If running as a pod: 
+# If running as a pod:
 # We know the Api server IP, so we can classify easily
-# If not: 
-# We determine by accessing the /version on the service. 
+# If not:
+# We determine by accessing the /version on the service.
 # Api Server will contain a major version field, while the Metrics will not
 @handler.subscribe(K8sApiService)
 class ApiServiceClassify(EventFilterBase):
     """API Service Classifier
     Classifies an API service
     """
+
     def __init__(self, event):
         self.event = event
         self.classified = False
@@ -79,20 +90,21 @@ class ApiServiceClassify(EventFilterBase):
         self.session.verify = False
         # Using the auth token if we can, for the case that authentication is needed for our checks
         if self.event.auth_token:
-            self.session.headers.update({"Authorization": "Bearer {}".format(self.event.auth_token)})
-            
+            self.session.headers.update({"Authorization": f"Bearer {self.event.auth_token}"})
+
     def classify_using_version_endpoint(self):
         """Tries to classify by accessing /version. if could not access succeded, returns"""
+        config = get_config()
         try:
-            r = self.session.get("{}://{}:{}/version".format(self.event.protocol, self.event.host, self.event.port))
-            versions = r.json()
-            if 'major' in versions:
-                if versions.get('major') == "":
+            endpoint = f"{self.event.protocol}://{self.event.host}:{self.event.port}/version"
+            versions = self.session.get(endpoint, timeout=config.network_timeout).json()
+            if "major" in versions:
+                if versions.get("major") == "":
                     self.event = MetricsServer()
                 else:
                     self.event = ApiServer()
-        except Exception as e:
-            logging.error("Could not access /version on API service: {}".format(e))
+        except Exception:
+            logging.warning("Could not access /version on API service", exc_info=True)
 
     def execute(self):
         discovered_protocol = self.event.protocol
@@ -109,6 +121,6 @@ class ApiServiceClassify(EventFilterBase):
 
         # in any case, making sure to link previously discovered protocol
         self.event.protocol = discovered_protocol
-        # If some check classified the Service, 
+        # If some check classified the Service,
         # the event will have been replaced.
-        return self.event
+        return self.event

kube_hunter/modules/discovery/dashboard.py

@@ -0,0 +1,44 @@
+import json
+import logging
+import requests
+
+from kube_hunter.conf import get_config
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Event, OpenPortEvent, Service
+from kube_hunter.core.types import Discovery
+
+logger = logging.getLogger(__name__)
+
+
+class KubeDashboardEvent(Service, Event):
+    """A web-based Kubernetes user interface allows easy usage with operations on the cluster"""
+
+    def __init__(self, **kargs):
+        Service.__init__(self, name="Kubernetes Dashboard", **kargs)
+
+
+@handler.subscribe(OpenPortEvent, predicate=lambda x: x.port == 30000)
+class KubeDashboard(Discovery):
+    """K8s Dashboard Discovery
+    Checks for the existence of a Dashboard
+    """
+
+    def __init__(self, event):
+        self.event = event
+
+    @property
+    def secure(self):
+        config = get_config()
+        endpoint = f"http://{self.event.host}:{self.event.port}/api/v1/service/default"
+        logger.debug("Attempting to discover an Api server to access dashboard")
+        try:
+            r = requests.get(endpoint, timeout=config.network_timeout)
+            if "listMeta" in r.text and len(json.loads(r.text)["errors"]) == 0:
+                return False
+        except requests.Timeout:
+            logger.debug(f"failed getting {endpoint}", exc_info=True)
+        return True
+
+    def execute(self):
+        if not self.secure:
+            self.publish_event(KubeDashboardEvent())

kube_hunter/modules/discovery/etcd.py

@@ -1,26 +1,22 @@
-import json
-import logging
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Event, OpenPortEvent, Service
+from kube_hunter.core.types import Discovery
 
-import requests
-
-from ...core.events import handler
-from ...core.events.types import Event, OpenPortEvent, Service
-from ...core.types import Discovery
-
-# Service:
 
 class EtcdAccessEvent(Service, Event):
-    """Etcd is a DB that stores cluster's data, it contains configuration and current state information, and might contain secrets"""
+    """Etcd is a DB that stores cluster's data, it contains configuration and current
+    state information, and might contain secrets"""
+
     def __init__(self):
         Service.__init__(self, name="Etcd")
 
 
-
-@handler.subscribe(OpenPortEvent, predicate= lambda p: p.port == 2379)
+@handler.subscribe(OpenPortEvent, predicate=lambda p: p.port == 2379)
 class EtcdRemoteAccess(Discovery):
     """Etcd service
     check for the existence of etcd service
     """
+
     def __init__(self, event):
         self.event = event
 

kube_hunter/modules/discovery/hosts.py

@@ -0,0 +1,209 @@
+import os
+import logging
+import itertools
+import requests
+
+from enum import Enum
+from netaddr import IPNetwork, IPAddress, AddrFormatError
+from netifaces import AF_INET, ifaddresses, interfaces, gateways
+
+from kube_hunter.conf import get_config
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Event, NewHostEvent, Vulnerability
+from kube_hunter.core.types import Discovery, InformationDisclosure, Azure
+
+logger = logging.getLogger(__name__)
+
+
+class RunningAsPodEvent(Event):
+    def __init__(self):
+        self.name = "Running from within a pod"
+        self.auth_token = self.get_service_account_file("token")
+        self.client_cert = self.get_service_account_file("ca.crt")
+        self.namespace = self.get_service_account_file("namespace")
+        self.kubeservicehost = os.environ.get("KUBERNETES_SERVICE_HOST", None)
+
+    # Event's logical location to be used mainly for reports.
+    def location(self):
+        location = "Local to Pod"
+        hostname = os.getenv("HOSTNAME")
+        if hostname:
+            location += f" ({hostname})"
+
+        return location
+
+    def get_service_account_file(self, file):
+        try:
+            with open(f"/var/run/secrets/kubernetes.io/serviceaccount/{file}") as f:
+                return f.read()
+        except OSError:
+            pass
+
+
+class AzureMetadataApi(Vulnerability, Event):
+    """Access to the Azure Metadata API exposes information about the machines associated with the cluster"""
+
+    def __init__(self, cidr):
+        Vulnerability.__init__(
+            self,
+            Azure,
+            "Azure Metadata Exposure",
+            category=InformationDisclosure,
+            vid="KHV003",
+        )
+        self.cidr = cidr
+        self.evidence = f"cidr: {cidr}"
+
+
+class HostScanEvent(Event):
+    def __init__(self, pod=False, active=False, predefined_hosts=None):
+        # flag to specify whether to get actual data from vulnerabilities
+        self.active = active
+        self.predefined_hosts = predefined_hosts or []
+
+
+class HostDiscoveryHelpers:
+    # generator, generating a subnet by given a cidr
+    @staticmethod
+    def filter_subnet(subnet, ignore=None):
+        for ip in subnet:
+            if ignore and any(ip in s for s in ignore):
+                logger.debug(f"HostDiscoveryHelpers.filter_subnet ignoring {ip}")
+            else:
+                yield ip
+
+    @staticmethod
+    def generate_hosts(cidrs):
+        ignore = list()
+        scan = list()
+        for cidr in cidrs:
+            try:
+                if cidr.startswith("!"):
+                    ignore.append(IPNetwork(cidr[1:]))
+                else:
+                    scan.append(IPNetwork(cidr))
+            except AddrFormatError as e:
+                raise ValueError(f"Unable to parse CIDR {cidr}") from e
+
+        return itertools.chain.from_iterable(HostDiscoveryHelpers.filter_subnet(sb, ignore=ignore) for sb in scan)
+
+
+@handler.subscribe(RunningAsPodEvent)
+class FromPodHostDiscovery(Discovery):
+    """Host Discovery when running as pod
+    Generates ip adresses to scan, based on cluster/scan type
+    """
+
+    def __init__(self, event):
+        self.event = event
+
+    def execute(self):
+        config = get_config()
+        # Scan any hosts that the user specified
+        if config.remote or config.cidr:
+            self.publish_event(HostScanEvent())
+        else:
+            # Discover cluster subnets, we'll scan all these hosts
+            cloud = None
+            if self.is_azure_pod():
+                subnets, cloud = self.azure_metadata_discovery()
+            else:
+                subnets = self.gateway_discovery()
+
+            should_scan_apiserver = False
+            if self.event.kubeservicehost:
+                should_scan_apiserver = True
+            for ip, mask in subnets:
+                if self.event.kubeservicehost and self.event.kubeservicehost in IPNetwork(f"{ip}/{mask}"):
+                    should_scan_apiserver = False
+                logger.debug(f"From pod scanning subnet {ip}/{mask}")
+                for ip in IPNetwork(f"{ip}/{mask}"):
+                    self.publish_event(NewHostEvent(host=ip, cloud=cloud))
+            if should_scan_apiserver:
+                self.publish_event(NewHostEvent(host=IPAddress(self.event.kubeservicehost), cloud=cloud))
+
+    def is_azure_pod(self):
+        config = get_config()
+        try:
+            logger.debug("From pod attempting to access Azure Metadata API")
+            if (
+                requests.get(
+                    "http://169.254.169.254/metadata/instance?api-version=2017-08-01",
+                    headers={"Metadata": "true"},
+                    timeout=config.network_timeout,
+                ).status_code
+                == 200
+            ):
+                return True
+        except requests.exceptions.ConnectionError:
+            logger.debug("Failed to connect Azure metadata server")
+            return False
+
+    # for pod scanning
+    def gateway_discovery(self):
+        """ Retrieving default gateway of pod, which is usually also a contact point with the host """
+        return [[gateways()["default"][AF_INET][0], "24"]]
+
+    # querying azure's interface metadata api | works only from a pod
+    def azure_metadata_discovery(self):
+        config = get_config()
+        logger.debug("From pod attempting to access azure's metadata")
+        machine_metadata = requests.get(
+            "http://169.254.169.254/metadata/instance?api-version=2017-08-01",
+            headers={"Metadata": "true"},
+            timeout=config.network_timeout,
+        ).json()
+        address, subnet = "", ""
+        subnets = list()
+        for interface in machine_metadata["network"]["interface"]:
+            address, subnet = (
+                interface["ipv4"]["subnet"][0]["address"],
+                interface["ipv4"]["subnet"][0]["prefix"],
+            )
+            subnet = subnet if not config.quick else "24"
+            logger.debug(f"From pod discovered subnet {address}/{subnet}")
+            subnets.append([address, subnet if not config.quick else "24"])
+
+            self.publish_event(AzureMetadataApi(cidr=f"{address}/{subnet}"))
+
+        return subnets, "Azure"
+
+
+@handler.subscribe(HostScanEvent)
+class HostDiscovery(Discovery):
+    """Host Discovery
+    Generates ip adresses to scan, based on cluster/scan type
+    """
+
+    def __init__(self, event):
+        self.event = event
+
+    def execute(self):
+        config = get_config()
+        if config.cidr:
+            for ip in HostDiscoveryHelpers.generate_hosts(config.cidr):
+                self.publish_event(NewHostEvent(host=ip))
+        elif config.interface:
+            self.scan_interfaces()
+        elif len(config.remote) > 0:
+            for host in config.remote:
+                self.publish_event(NewHostEvent(host=host))
+
+    # for normal scanning
+    def scan_interfaces(self):
+        for ip in self.generate_interfaces_subnet():
+            handler.publish_event(NewHostEvent(host=ip))
+
+    # generate all subnets from all internal network interfaces
+    def generate_interfaces_subnet(self, sn="24"):
+        for ifaceName in interfaces():
+            for ip in [i["addr"] for i in ifaddresses(ifaceName).setdefault(AF_INET, [])]:
+                if not self.event.localhost and InterfaceTypes.LOCALHOST.value in ip.__str__():
+                    continue
+                for ip in IPNetwork(f"{ip}/{sn}"):
+                    yield ip
+
+
+# for comparing prefixes
+class InterfaceTypes(Enum):
+    LOCALHOST = "127"

kube_hunter/modules/discovery/kubectl.py

@@ -1,27 +1,30 @@
-
 import logging
-import subprocess 
-import json
+import subprocess
 
-from ...core.types import Discovery
-from ...core.events import handler
-from ...core.events.types import HuntStarted, Event
+from kube_hunter.core.types import Discovery
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import HuntStarted, Event
+
+logger = logging.getLogger(__name__)
 
 
 class KubectlClientEvent(Event):
     """The API server is in charge of all operations on the cluster."""
+
     def __init__(self, version):
         self.version = version
 
     def location(self):
         return "local machine"
 
-# Will be triggered on start of every hunt 
+
+# Will be triggered on start of every hunt
 @handler.subscribe(HuntStarted)
 class KubectlClientDiscovery(Discovery):
     """Kubectl Client Discovery
     Checks for the existence of a local kubectl client
     """
+
     def __init__(self, event):
         self.event = event
 
@@ -33,14 +36,14 @@ class KubectlClientDiscovery(Discovery):
             if b"GitVersion" in version_info:
                 # extracting version from kubectl output
                 version_info = version_info.decode()
-                start = version_info.find('GitVersion')
-                version = version_info[start + len("GitVersion':\"") : version_info.find("\",", start)]
+                start = version_info.find("GitVersion")
+                version = version_info[start + len("GitVersion':\"") : version_info.find('",', start)]
         except Exception:
-            logging.debug("Could not find kubectl client")
+            logger.debug("Could not find kubectl client")
         return version
-    
+
     def execute(self):
-        logging.debug("Attempting to discover a local kubectl client")
-        version = self.get_kubectl_binary_version() 
+        logger.debug("Attempting to discover a local kubectl client")
+        version = self.get_kubectl_binary_version()
         if version:
-            self.publish_event(KubectlClientEvent(version=version))
+            self.publish_event(KubectlClientEvent(version=version))

kube_hunter/modules/discovery/kubelet.py

@@ -1,64 +1,77 @@
-import json
 import logging
-from enum import Enum
-from ...core.types import Discovery, Kubelet
-
 import requests
 import urllib3
+from enum import Enum
+
+from kube_hunter.conf import get_config
+from kube_hunter.core.types import Discovery
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import OpenPortEvent, Event, Service
 
-from ...core.events import handler
-from ...core.events.types import OpenPortEvent, Vulnerability, Event, Service
 urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+logger = logging.getLogger(__name__)
 
 """ Services """
+
+
 class ReadOnlyKubeletEvent(Service, Event):
-    """The read-only port on the kubelet serves health probing endpoints, and is relied upon by many kubernetes components"""
+    """The read-only port on the kubelet serves health probing endpoints,
+    and is relied upon by many kubernetes components"""
+
     def __init__(self):
         Service.__init__(self, name="Kubelet API (readonly)")
 
+
 class SecureKubeletEvent(Service, Event):
     """The Kubelet is the main component in every Node, all pod operations goes through the kubelet"""
+
     def __init__(self, cert=False, token=False, anonymous_auth=True, **kwargs):
         self.cert = cert
         self.token = token
         self.anonymous_auth = anonymous_auth
-        Service.__init__(self, name="Kubelet API", **kwargs) 
+        Service.__init__(self, name="Kubelet API", **kwargs)
 
 
 class KubeletPorts(Enum):
     SECURED = 10250
     READ_ONLY = 10255
 
-@handler.subscribe(OpenPortEvent, predicate= lambda x: x.port == 10255 or x.port == 10250)
+
+@handler.subscribe(OpenPortEvent, predicate=lambda x: x.port in [10250, 10255])
 class KubeletDiscovery(Discovery):
     """Kubelet Discovery
     Checks for the existence of a Kubelet service, and its open ports
     """
+
     def __init__(self, event):
         self.event = event
 
     def get_read_only_access(self):
-        logging.debug("Passive hunter is attempting to get kubelet read access at {}:{}".format(self.event.host, self.event.port))
-        r = requests.get("http://{host}:{port}/pods".format(host=self.event.host, port=self.event.port))
+        config = get_config()
+        endpoint = f"http://{self.event.host}:{self.event.port}/pods"
+        logger.debug(f"Trying to get kubelet read access at {endpoint}")
+        r = requests.get(endpoint, timeout=config.network_timeout)
         if r.status_code == 200:
             self.publish_event(ReadOnlyKubeletEvent())
 
     def get_secure_access(self):
-        logging.debug("Attempting to get kubelet secure access")
+        logger.debug("Attempting to get kubelet secure access")
         ping_status = self.ping_kubelet()
         if ping_status == 200:
             self.publish_event(SecureKubeletEvent(secure=False))
-        elif ping_status == 403: 
+        elif ping_status == 403:
             self.publish_event(SecureKubeletEvent(secure=True))
         elif ping_status == 401:
             self.publish_event(SecureKubeletEvent(secure=True, anonymous_auth=False))
 
     def ping_kubelet(self):
-        logging.debug("Attempting to get pod info from kubelet")
+        config = get_config()
+        endpoint = f"https://{self.event.host}:{self.event.port}/pods"
+        logger.debug("Attempting to get pods info from kubelet")
         try:
-            return requests.get("https://{host}:{port}/pods".format(host=self.event.host, port=self.event.port), verify=False).status_code
-        except Exception as ex:
-            logging.debug("Failed pinging https port 10250 on {} : {}".format(self.event.host, ex))
+            return requests.get(endpoint, verify=False, timeout=config.network_timeout).status_code
+        except Exception:
+            logger.debug(f"Failed pinging https port on {endpoint}", exc_info=True)
 
     def execute(self):
         if self.event.port == KubeletPorts.SECURED.value:

kube_hunter/modules/discovery/ports.py

@@ -1,39 +1,43 @@
 import logging
-
 from socket import socket
-from ...core.types import Discovery
-
-from ...core.events import handler
-from ...core.events.types import NewHostEvent, OpenPortEvent
 
+from kube_hunter.core.types import Discovery
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import NewHostEvent, OpenPortEvent
 
+logger = logging.getLogger(__name__)
 default_ports = [8001, 8080, 10250, 10255, 30000, 443, 6443, 2379]
 
+
 @handler.subscribe(NewHostEvent)
 class PortDiscovery(Discovery):
     """Port Scanning
     Scans Kubernetes known ports to determine open endpoints for discovery
     """
+
     def __init__(self, event):
         self.event = event
         self.host = event.host
         self.port = event.port
 
     def execute(self):
-        logging.debug("host {0} try ports: {1}".format(self.host, default_ports))
+        logger.debug(f"host {self.host} try ports: {default_ports}")
         for single_port in default_ports:
             if self.test_connection(self.host, single_port):
-                logging.debug("Reachable port found: {0}".format(single_port))
+                logger.debug(f"Reachable port found: {single_port}")
                 self.publish_event(OpenPortEvent(port=single_port))
 
     @staticmethod
     def test_connection(host, port):
         s = socket()
         s.settimeout(1.5)
-        try: 
+        try:
+            logger.debug(f"Scanning {host}:{port}")
             success = s.connect_ex((str(host), port))
             if success == 0:
                 return True
-        except: pass
-        finally: s.close()
+        except Exception:
+            logger.debug(f"Failed to probe {host}:{port}")
+        finally:
+            s.close()
         return False

kube_hunter/modules/discovery/proxy.py

@@ -0,0 +1,45 @@
+import logging
+import requests
+
+from kube_hunter.conf import get_config
+from kube_hunter.core.types import Discovery
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Service, Event, OpenPortEvent
+
+logger = logging.getLogger(__name__)
+
+
+class KubeProxyEvent(Event, Service):
+    """proxies from a localhost address to the Kubernetes apiserver"""
+
+    def __init__(self):
+        Service.__init__(self, name="Kubernetes Proxy")
+
+
+@handler.subscribe(OpenPortEvent, predicate=lambda x: x.port == 8001)
+class KubeProxy(Discovery):
+    """Proxy Discovery
+    Checks for the existence of a an open Proxy service
+    """
+
+    def __init__(self, event):
+        self.event = event
+        self.host = event.host
+        self.port = event.port or 8001
+
+    @property
+    def accesible(self):
+        config = get_config()
+        endpoint = f"http://{self.host}:{self.port}/api/v1"
+        logger.debug("Attempting to discover a proxy service")
+        try:
+            r = requests.get(endpoint, timeout=config.network_timeout)
+            if r.status_code == 200 and "APIResourceList" in r.text:
+                return True
+        except requests.Timeout:
+            logger.debug(f"failed to get {endpoint}", exc_info=True)
+        return False
+
+    def execute(self):
+        if self.accesible:
+            self.publish_event(KubeProxyEvent())

kube_hunter/modules/hunting/__init__.py

@@ -0,0 +1,16 @@
+# flake8: noqa: E402
+from . import (
+    aks,
+    apiserver,
+    arp,
+    capabilities,
+    certificates,
+    cves,
+    dashboard,
+    dns,
+    etcd,
+    kubelet,
+    mounts,
+    proxy,
+    secrets,
+)

kube_hunter/modules/hunting/aks.py

@@ -0,0 +1,99 @@
+import json
+import logging
+import requests
+
+from kube_hunter.conf import get_config
+from kube_hunter.modules.hunting.kubelet import ExposedRunHandler
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Event, Vulnerability
+from kube_hunter.core.types import Hunter, ActiveHunter, IdentityTheft, Azure
+
+logger = logging.getLogger(__name__)
+
+
+class AzureSpnExposure(Vulnerability, Event):
+    """The SPN is exposed, potentially allowing an attacker to gain access to the Azure subscription"""
+
+    def __init__(self, container):
+        Vulnerability.__init__(
+            self,
+            Azure,
+            "Azure SPN Exposure",
+            category=IdentityTheft,
+            vid="KHV004",
+        )
+        self.container = container
+
+
+@handler.subscribe(ExposedRunHandler, predicate=lambda x: x.cloud == "Azure")
+class AzureSpnHunter(Hunter):
+    """AKS Hunting
+    Hunting Azure cluster deployments using specific known configurations
+    """
+
+    def __init__(self, event):
+        self.event = event
+        self.base_url = f"https://{self.event.host}:{self.event.port}"
+
+    # getting a container that has access to the azure.json file
+    def get_key_container(self):
+        config = get_config()
+        endpoint = f"{self.base_url}/pods"
+        logger.debug("Trying to find container with access to azure.json file")
+        try:
+            r = requests.get(endpoint, verify=False, timeout=config.network_timeout)
+        except requests.Timeout:
+            logger.debug("failed getting pod info")
+        else:
+            pods_data = r.json().get("items", [])
+            suspicious_volume_names = []
+            for pod_data in pods_data:
+                for volume in pod_data["spec"].get("volumes", []):
+                    if volume.get("hostPath"):
+                        path = volume["hostPath"]["path"]
+                        if "/etc/kubernetes/azure.json".startswith(path):
+                            suspicious_volume_names.append(volume["name"])
+                for container in pod_data["spec"]["containers"]:
+                    for mount in container.get("volumeMounts", []):
+                        if mount["name"] in suspicious_volume_names:
+                            return {
+                                "name": container["name"],
+                                "pod": pod_data["metadata"]["name"],
+                                "namespace": pod_data["metadata"]["namespace"],
+                            }
+
+    def execute(self):
+        container = self.get_key_container()
+        if container:
+            self.publish_event(AzureSpnExposure(container=container))
+
+
+@handler.subscribe(AzureSpnExposure)
+class ProveAzureSpnExposure(ActiveHunter):
+    """Azure SPN Hunter
+    Gets the azure subscription file on the host by executing inside a container
+    """
+
+    def __init__(self, event):
+        self.event = event
+        self.base_url = f"https://{self.event.host}:{self.event.port}"
+
+    def run(self, command, container):
+        config = get_config()
+        run_url = "/".join(self.base_url, "run", container["namespace"], container["pod"], container["name"])
+        return requests.post(run_url, verify=False, params={"cmd": command}, timeout=config.network_timeout)
+
+    def execute(self):
+        try:
+            subscription = self.run("cat /etc/kubernetes/azure.json", container=self.event.container).json()
+        except requests.Timeout:
+            logger.debug("failed to run command in container", exc_info=True)
+        except json.decoder.JSONDecodeError:
+            logger.warning("failed to parse SPN")
+        else:
+            if "subscriptionId" in subscription:
+                self.event.subscriptionId = subscription["subscriptionId"]
+                self.event.aadClientId = subscription["aadClientId"]
+                self.event.aadClientSecret = subscription["aadClientSecret"]
+                self.event.tenantId = subscription["tenantId"]
+                self.event.evidence = f"subscription: {self.event.subscriptionId}"

kube_hunter/modules/hunting/apiserver.py

@@ -0,0 +1,643 @@
+import logging
+import json
+import uuid
+import requests
+
+from kube_hunter.conf import get_config
+from kube_hunter.modules.discovery.apiserver import ApiServer
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Vulnerability, Event, K8sVersionDisclosure
+from kube_hunter.core.types import Hunter, ActiveHunter, KubernetesCluster
+from kube_hunter.core.types import (
+    AccessRisk,
+    InformationDisclosure,
+    UnauthenticatedAccess,
+)
+
+logger = logging.getLogger(__name__)
+
+
+class ServerApiAccess(Vulnerability, Event):
+    """The API Server port is accessible.
+    Depending on your RBAC settings this could expose access to or control of your cluster."""
+
+    def __init__(self, evidence, using_token):
+        if using_token:
+            name = "Access to API using service account token"
+            category = InformationDisclosure
+        else:
+            name = "Unauthenticated access to API"
+            category = UnauthenticatedAccess
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name=name,
+            category=category,
+            vid="KHV005",
+        )
+        self.evidence = evidence
+
+
+class ServerApiHTTPAccess(Vulnerability, Event):
+    """The API Server port is accessible over HTTP, and therefore unencrypted.
+    Depending on your RBAC settings this could expose access to or control of your cluster."""
+
+    def __init__(self, evidence):
+        name = "Insecure (HTTP) access to API"
+        category = UnauthenticatedAccess
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name=name,
+            category=category,
+            vid="KHV006",
+        )
+        self.evidence = evidence
+
+
+class ApiInfoDisclosure(Vulnerability, Event):
+    """Information Disclosure depending upon RBAC permissions and Kube-Cluster Setup"""
+
+    def __init__(self, evidence, using_token, name):
+        category = InformationDisclosure
+        if using_token:
+            name += " using default service account token"
+        else:
+            name += " as anonymous user"
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name=name,
+            category=category,
+            vid="KHV007",
+        )
+        self.evidence = evidence
+
+
+class ListPodsAndNamespaces(ApiInfoDisclosure):
+    """ Accessing pods might give an attacker valuable information"""
+
+    def __init__(self, evidence, using_token):
+        ApiInfoDisclosure.__init__(self, evidence, using_token, "Listing pods")
+
+
+class ListNamespaces(ApiInfoDisclosure):
+    """ Accessing namespaces might give an attacker valuable information """
+
+    def __init__(self, evidence, using_token):
+        ApiInfoDisclosure.__init__(self, evidence, using_token, "Listing namespaces")
+
+
+class ListRoles(ApiInfoDisclosure):
+    """ Accessing roles might give an attacker valuable information """
+
+    def __init__(self, evidence, using_token):
+        ApiInfoDisclosure.__init__(self, evidence, using_token, "Listing roles")
+
+
+class ListClusterRoles(ApiInfoDisclosure):
+    """ Accessing cluster roles might give an attacker valuable information """
+
+    def __init__(self, evidence, using_token):
+        ApiInfoDisclosure.__init__(self, evidence, using_token, "Listing cluster roles")
+
+
+class CreateANamespace(Vulnerability, Event):
+
+    """Creating a namespace might give an attacker an area with default (exploitable) permissions to run pods in."""
+
+    def __init__(self, evidence):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Created a namespace",
+            category=AccessRisk,
+        )
+        self.evidence = evidence
+
+
+class DeleteANamespace(Vulnerability, Event):
+
+    """ Deleting a namespace might give an attacker the option to affect application behavior """
+
+    def __init__(self, evidence):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Delete a namespace",
+            category=AccessRisk,
+        )
+        self.evidence = evidence
+
+
+class CreateARole(Vulnerability, Event):
+    """Creating a role might give an attacker the option to harm the normal behavior of newly created pods
+    within the specified namespaces.
+    """
+
+    def __init__(self, evidence):
+        Vulnerability.__init__(self, KubernetesCluster, name="Created a role", category=AccessRisk)
+        self.evidence = evidence
+
+
+class CreateAClusterRole(Vulnerability, Event):
+    """Creating a cluster role might give an attacker the option to harm the normal behavior of newly created pods
+    across the whole cluster
+    """
+
+    def __init__(self, evidence):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Created a cluster role",
+            category=AccessRisk,
+        )
+        self.evidence = evidence
+
+
+class PatchARole(Vulnerability, Event):
+    """Patching a role might give an attacker the option to create new pods with custom roles within the
+    specific role's namespace scope
+    """
+
+    def __init__(self, evidence):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Patched a role",
+            category=AccessRisk,
+        )
+        self.evidence = evidence
+
+
+class PatchAClusterRole(Vulnerability, Event):
+    """Patching a cluster role might give an attacker the option to create new pods with custom roles within the whole
+    cluster scope.
+    """
+
+    def __init__(self, evidence):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Patched a cluster role",
+            category=AccessRisk,
+        )
+        self.evidence = evidence
+
+
+class DeleteARole(Vulnerability, Event):
+    """ Deleting a role might allow an attacker to affect access to resources in the namespace"""
+
+    def __init__(self, evidence):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Deleted a role",
+            category=AccessRisk,
+        )
+        self.evidence = evidence
+
+
+class DeleteAClusterRole(Vulnerability, Event):
+    """ Deleting a cluster role might allow an attacker to affect access to resources in the cluster"""
+
+    def __init__(self, evidence):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Deleted a cluster role",
+            category=AccessRisk,
+        )
+        self.evidence = evidence
+
+
+class CreateAPod(Vulnerability, Event):
+    """ Creating a new pod allows an attacker to run custom code"""
+
+    def __init__(self, evidence):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Created A Pod",
+            category=AccessRisk,
+        )
+        self.evidence = evidence
+
+
+class CreateAPrivilegedPod(Vulnerability, Event):
+    """ Creating a new PRIVILEGED pod would gain an attacker FULL CONTROL over the cluster"""
+
+    def __init__(self, evidence):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Created A PRIVILEGED Pod",
+            category=AccessRisk,
+        )
+        self.evidence = evidence
+
+
+class PatchAPod(Vulnerability, Event):
+    """ Patching a pod allows an attacker to compromise and control it """
+
+    def __init__(self, evidence):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Patched A Pod",
+            category=AccessRisk,
+        )
+        self.evidence = evidence
+
+
+class DeleteAPod(Vulnerability, Event):
+    """ Deleting a pod allows an attacker to disturb applications on the cluster """
+
+    def __init__(self, evidence):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Deleted A Pod",
+            category=AccessRisk,
+        )
+        self.evidence = evidence
+
+
+class ApiServerPassiveHunterFinished(Event):
+    def __init__(self, namespaces):
+        self.namespaces = namespaces
+
+
+# This Hunter checks what happens if we try to access the API Server without a service account token
+# If we have a service account token we'll also trigger AccessApiServerWithToken below
+@handler.subscribe(ApiServer)
+class AccessApiServer(Hunter):
+    """API Server Hunter
+    Checks if API server is accessible
+    """
+
+    def __init__(self, event):
+        self.event = event
+        self.path = f"{self.event.protocol}://{self.event.host}:{self.event.port}"
+        self.headers = {}
+        self.with_token = False
+
+    def access_api_server(self):
+        config = get_config()
+        logger.debug(f"Passive Hunter is attempting to access the API at {self.path}")
+        try:
+            r = requests.get(f"{self.path}/api", headers=self.headers, verify=False, timeout=config.network_timeout)
+            if r.status_code == 200 and r.content:
+                return r.content
+        except requests.exceptions.ConnectionError:
+            pass
+        return False
+
+    def get_items(self, path):
+        config = get_config()
+        try:
+            items = []
+            r = requests.get(path, headers=self.headers, verify=False, timeout=config.network_timeout)
+            if r.status_code == 200:
+                resp = json.loads(r.content)
+                for item in resp["items"]:
+                    items.append(item["metadata"]["name"])
+                return items
+            logger.debug(f"Got HTTP {r.status_code} respone: {r.text}")
+        except (requests.exceptions.ConnectionError, KeyError):
+            logger.debug(f"Failed retrieving items from API server at {path}")
+
+        return None
+
+    def get_pods(self, namespace=None):
+        config = get_config()
+        pods = []
+        try:
+            if not namespace:
+                r = requests.get(
+                    f"{self.path}/api/v1/pods",
+                    headers=self.headers,
+                    verify=False,
+                    timeout=config.network_timeout,
+                )
+            else:
+                r = requests.get(
+                    f"{self.path}/api/v1/namespaces/{namespace}/pods",
+                    headers=self.headers,
+                    verify=False,
+                    timeout=config.network_timeout,
+                )
+            if r.status_code == 200:
+                resp = json.loads(r.content)
+                for item in resp["items"]:
+                    name = item["metadata"]["name"].encode("ascii", "ignore")
+                    namespace = item["metadata"]["namespace"].encode("ascii", "ignore")
+                    pods.append({"name": name, "namespace": namespace})
+                return pods
+        except (requests.exceptions.ConnectionError, KeyError):
+            pass
+        return None
+
+    def execute(self):
+        api = self.access_api_server()
+        if api:
+            if self.event.protocol == "http":
+                self.publish_event(ServerApiHTTPAccess(api))
+            else:
+                self.publish_event(ServerApiAccess(api, self.with_token))
+
+        namespaces = self.get_items(f"{self.path}/api/v1/namespaces")
+        if namespaces:
+            self.publish_event(ListNamespaces(namespaces, self.with_token))
+
+        roles = self.get_items(f"{self.path}/apis/rbac.authorization.k8s.io/v1/roles")
+        if roles:
+            self.publish_event(ListRoles(roles, self.with_token))
+
+        cluster_roles = self.get_items(f"{self.path}/apis/rbac.authorization.k8s.io/v1/clusterroles")
+        if cluster_roles:
+            self.publish_event(ListClusterRoles(cluster_roles, self.with_token))
+
+        pods = self.get_pods()
+        if pods:
+            self.publish_event(ListPodsAndNamespaces(pods, self.with_token))
+
+        # If we have a service account token, this event should get triggered twice - once with and once without
+        # the token
+        self.publish_event(ApiServerPassiveHunterFinished(namespaces))
+
+
+@handler.subscribe(ApiServer, predicate=lambda x: x.auth_token)
+class AccessApiServerWithToken(AccessApiServer):
+    """API Server Hunter
+    Accessing the API server using the service account token obtained from a compromised pod
+    """
+
+    def __init__(self, event):
+        super().__init__(event)
+        assert self.event.auth_token
+        self.headers = {"Authorization": f"Bearer {self.event.auth_token}"}
+        self.category = InformationDisclosure
+        self.with_token = True
+
+
+# Active Hunter
+@handler.subscribe(ApiServerPassiveHunterFinished)
+class AccessApiServerActive(ActiveHunter):
+    """API server hunter
+    Accessing the api server might grant an attacker full control over the cluster
+    """
+
+    def __init__(self, event):
+        self.event = event
+        self.path = f"{self.event.protocol}://{self.event.host}:{self.event.port}"
+
+    def create_item(self, path, data):
+        config = get_config()
+        headers = {"Content-Type": "application/json"}
+        if self.event.auth_token:
+            headers["Authorization"] = f"Bearer {self.event.auth_token}"
+
+        try:
+            res = requests.post(path, verify=False, data=data, headers=headers, timeout=config.network_timeout)
+            if res.status_code in [200, 201, 202]:
+                parsed_content = json.loads(res.content)
+                return parsed_content["metadata"]["name"]
+        except (requests.exceptions.ConnectionError, KeyError):
+            pass
+        return None
+
+    def patch_item(self, path, data):
+        config = get_config()
+        headers = {"Content-Type": "application/json-patch+json"}
+        if self.event.auth_token:
+            headers["Authorization"] = f"Bearer {self.event.auth_token}"
+        try:
+            res = requests.patch(path, headers=headers, verify=False, data=data, timeout=config.network_timeout)
+            if res.status_code not in [200, 201, 202]:
+                return None
+            parsed_content = json.loads(res.content)
+            # TODO is there a patch timestamp we could use?
+            return parsed_content["metadata"]["namespace"]
+        except (requests.exceptions.ConnectionError, KeyError):
+            pass
+        return None
+
+    def delete_item(self, path):
+        config = get_config()
+        headers = {}
+        if self.event.auth_token:
+            headers["Authorization"] = f"Bearer {self.event.auth_token}"
+        try:
+            res = requests.delete(path, headers=headers, verify=False, timeout=config.network_timeout)
+            if res.status_code in [200, 201, 202]:
+                parsed_content = json.loads(res.content)
+                return parsed_content["metadata"]["deletionTimestamp"]
+        except (requests.exceptions.ConnectionError, KeyError):
+            pass
+        return None
+
+    def create_a_pod(self, namespace, is_privileged):
+        privileged_value = {"securityContext": {"privileged": True}} if is_privileged else {}
+        random_name = str(uuid.uuid4())[0:5]
+        pod = {
+            "apiVersion": "v1",
+            "kind": "Pod",
+            "metadata": {"name": random_name},
+            "spec": {
+                "containers": [
+                    {"name": random_name, "image": "nginx:1.7.9", "ports": [{"containerPort": 80}], **privileged_value}
+                ]
+            },
+        }
+        return self.create_item(path=f"{self.path}/api/v1/namespaces/{namespace}/pods", data=json.dumps(pod))
+
+    def delete_a_pod(self, namespace, pod_name):
+        delete_timestamp = self.delete_item(f"{self.path}/api/v1/namespaces/{namespace}/pods/{pod_name}")
+        if not delete_timestamp:
+            logger.error(f"Created pod {pod_name} in namespace {namespace} but unable to delete it")
+        return delete_timestamp
+
+    def patch_a_pod(self, namespace, pod_name):
+        data = [{"op": "add", "path": "/hello", "value": ["world"]}]
+        return self.patch_item(
+            path=f"{self.path}/api/v1/namespaces/{namespace}/pods/{pod_name}",
+            data=json.dumps(data),
+        )
+
+    def create_namespace(self):
+        random_name = (str(uuid.uuid4()))[0:5]
+        data = {
+            "kind": "Namespace",
+            "apiVersion": "v1",
+            "metadata": {"name": random_name, "labels": {"name": random_name}},
+        }
+        return self.create_item(path=f"{self.path}/api/v1/namespaces", data=json.dumps(data))
+
+    def delete_namespace(self, namespace):
+        delete_timestamp = self.delete_item(f"{self.path}/api/v1/namespaces/{namespace}")
+        if delete_timestamp is None:
+            logger.error(f"Created namespace {namespace} but failed to delete it")
+        return delete_timestamp
+
+    def create_a_role(self, namespace):
+        name = str(uuid.uuid4())[0:5]
+        role = {
+            "kind": "Role",
+            "apiVersion": "rbac.authorization.k8s.io/v1",
+            "metadata": {"namespace": namespace, "name": name},
+            "rules": [{"apiGroups": [""], "resources": ["pods"], "verbs": ["get", "watch", "list"]}],
+        }
+        return self.create_item(
+            path=f"{self.path}/apis/rbac.authorization.k8s.io/v1/namespaces/{namespace}/roles",
+            data=json.dumps(role),
+        )
+
+    def create_a_cluster_role(self):
+        name = str(uuid.uuid4())[0:5]
+        cluster_role = {
+            "kind": "ClusterRole",
+            "apiVersion": "rbac.authorization.k8s.io/v1",
+            "metadata": {"name": name},
+            "rules": [{"apiGroups": [""], "resources": ["pods"], "verbs": ["get", "watch", "list"]}],
+        }
+        return self.create_item(
+            path=f"{self.path}/apis/rbac.authorization.k8s.io/v1/clusterroles",
+            data=json.dumps(cluster_role),
+        )
+
+    def delete_a_role(self, namespace, name):
+        delete_timestamp = self.delete_item(
+            f"{self.path}/apis/rbac.authorization.k8s.io/v1/namespaces/{namespace}/roles/{name}"
+        )
+        if delete_timestamp is None:
+            logger.error(f"Created role {name} in namespace {namespace} but unable to delete it")
+        return delete_timestamp
+
+    def delete_a_cluster_role(self, name):
+        delete_timestamp = self.delete_item(f"{self.path}/apis/rbac.authorization.k8s.io/v1/clusterroles/{name}")
+        if delete_timestamp is None:
+            logger.error(f"Created cluster role {name} but unable to delete it")
+        return delete_timestamp
+
+    def patch_a_role(self, namespace, role):
+        data = [{"op": "add", "path": "/hello", "value": ["world"]}]
+        return self.patch_item(
+            path=f"{self.path}/apis/rbac.authorization.k8s.io/v1/namespaces/{namespace}/roles/{role}",
+            data=json.dumps(data),
+        )
+
+    def patch_a_cluster_role(self, cluster_role):
+        data = [{"op": "add", "path": "/hello", "value": ["world"]}]
+        return self.patch_item(
+            path=f"{self.path}/apis/rbac.authorization.k8s.io/v1/clusterroles/{cluster_role}",
+            data=json.dumps(data),
+        )
+
+    def execute(self):
+        # Try creating cluster-wide objects
+        namespace = self.create_namespace()
+        if namespace:
+            self.publish_event(CreateANamespace(f"new namespace name: {namespace}"))
+            delete_timestamp = self.delete_namespace(namespace)
+            if delete_timestamp:
+                self.publish_event(DeleteANamespace(delete_timestamp))
+
+        cluster_role = self.create_a_cluster_role()
+        if cluster_role:
+            self.publish_event(CreateAClusterRole(f"Cluster role name: {cluster_role}"))
+
+            patch_evidence = self.patch_a_cluster_role(cluster_role)
+            if patch_evidence:
+                self.publish_event(
+                    PatchAClusterRole(f"Patched Cluster Role Name: {cluster_role}  Patch evidence: {patch_evidence}")
+                )
+
+            delete_timestamp = self.delete_a_cluster_role(cluster_role)
+            if delete_timestamp:
+                self.publish_event(DeleteAClusterRole(f"Cluster role {cluster_role} deletion time {delete_timestamp}"))
+
+        #  Try attacking all the namespaces we know about
+        if self.event.namespaces:
+            for namespace in self.event.namespaces:
+                # Try creating and deleting a privileged pod
+                pod_name = self.create_a_pod(namespace, True)
+                if pod_name:
+                    self.publish_event(CreateAPrivilegedPod(f"Pod Name: {pod_name} Namespace: {namespace}"))
+                    delete_time = self.delete_a_pod(namespace, pod_name)
+                    if delete_time:
+                        self.publish_event(DeleteAPod(f"Pod Name: {pod_name} Deletion time: {delete_time}"))
+
+                # Try creating, patching and deleting an unprivileged pod
+                pod_name = self.create_a_pod(namespace, False)
+                if pod_name:
+                    self.publish_event(CreateAPod(f"Pod Name: {pod_name} Namespace: {namespace}"))
+
+                    patch_evidence = self.patch_a_pod(namespace, pod_name)
+                    if patch_evidence:
+                        self.publish_event(
+                            PatchAPod(
+                                f"Pod Name: {pod_name} " f"Namespace: {namespace} " f"Patch evidence: {patch_evidence}"
+                            )
+                        )
+
+                    delete_time = self.delete_a_pod(namespace, pod_name)
+                    if delete_time:
+                        self.publish_event(
+                            DeleteAPod(
+                                f"Pod Name: {pod_name} " f"Namespace: {namespace} " f"Delete time: {delete_time}"
+                            )
+                        )
+
+                role = self.create_a_role(namespace)
+                if role:
+                    self.publish_event(CreateARole(f"Role name: {role}"))
+
+                    patch_evidence = self.patch_a_role(namespace, role)
+                    if patch_evidence:
+                        self.publish_event(
+                            PatchARole(
+                                f"Patched Role Name: {role} "
+                                f"Namespace: {namespace} "
+                                f"Patch evidence: {patch_evidence}"
+                            )
+                        )
+
+                    delete_time = self.delete_a_role(namespace, role)
+                    if delete_time:
+                        self.publish_event(
+                            DeleteARole(
+                                f"Deleted role: {role} " f"Namespace: {namespace} " f"Delete time: {delete_time}"
+                            )
+                        )
+
+            # Note: we are not binding any role or cluster role because
+            # in certain cases it might effect the running pod within the cluster (and we don't want to do that).
+
+
+@handler.subscribe(ApiServer)
+class ApiVersionHunter(Hunter):
+    """Api Version Hunter
+    Tries to obtain the Api Server's version directly from /version endpoint
+    """
+
+    def __init__(self, event):
+        self.event = event
+        self.path = f"{self.event.protocol}://{self.event.host}:{self.event.port}"
+        self.session = requests.Session()
+        self.session.verify = False
+        if self.event.auth_token:
+            self.session.headers.update({"Authorization": f"Bearer {self.event.auth_token}"})
+
+    def execute(self):
+        config = get_config()
+        if self.event.auth_token:
+            logger.debug(
+                "Trying to access the API server version endpoint using pod's"
+                f" service account token on {self.event.host}:{self.event.port} \t"
+            )
+        else:
+            logger.debug("Trying to access the API server version endpoint anonymously")
+        version = self.session.get(f"{self.path}/version", timeout=config.network_timeout).json()["gitVersion"]
+        logger.debug(f"Discovered version of api server {version}")
+        self.publish_event(K8sVersionDisclosure(version=version, from_endpoint="/version"))

kube_hunter/modules/hunting/arp.py

@@ -0,0 +1,71 @@
+import logging
+
+from scapy.all import ARP, IP, ICMP, Ether, sr1, srp
+
+from kube_hunter.conf import get_config
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Event, Vulnerability
+from kube_hunter.core.types import ActiveHunter, KubernetesCluster, IdentityTheft
+from kube_hunter.modules.hunting.capabilities import CapNetRawEnabled
+
+logger = logging.getLogger(__name__)
+
+
+class PossibleArpSpoofing(Vulnerability, Event):
+    """A malicious pod running on the cluster could potentially run an ARP Spoof attack
+    and perform a MITM between pods on the node."""
+
+    def __init__(self):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            "Possible Arp Spoof",
+            category=IdentityTheft,
+            vid="KHV020",
+        )
+
+
+@handler.subscribe(CapNetRawEnabled)
+class ArpSpoofHunter(ActiveHunter):
+    """Arp Spoof Hunter
+    Checks for the possibility of running an ARP spoof
+    attack from within a pod (results are based on the running node)
+    """
+
+    def __init__(self, event):
+        self.event = event
+
+    def try_getting_mac(self, ip):
+        config = get_config()
+        ans = sr1(ARP(op=1, pdst=ip), timeout=config.network_timeout, verbose=0)
+        return ans[ARP].hwsrc if ans else None
+
+    def detect_l3_on_host(self, arp_responses):
+        """ returns True for an existence of an L3 network plugin """
+        logger.debug("Attempting to detect L3 network plugin using ARP")
+        unique_macs = list({response[ARP].hwsrc for _, response in arp_responses})
+
+        # if LAN addresses not unique
+        if len(unique_macs) == 1:
+            # if an ip outside the subnets gets a mac address
+            outside_mac = self.try_getting_mac("1.1.1.1")
+            # outside mac is the same as lan macs
+            if outside_mac == unique_macs[0]:
+                return True
+        # only one mac address for whole LAN and outside
+        return False
+
+    def execute(self):
+        config = get_config()
+        self_ip = sr1(IP(dst="1.1.1.1", ttl=1) / ICMP(), verbose=0, timeout=config.network_timeout)[IP].dst
+        arp_responses, _ = srp(
+            Ether(dst="ff:ff:ff:ff:ff:ff") / ARP(op=1, pdst=f"{self_ip}/24"),
+            timeout=config.network_timeout,
+            verbose=0,
+        )
+
+        # arp enabled on cluster and more than one pod on node
+        if len(arp_responses) > 1:
+            # L3 plugin not installed
+            if not self.detect_l3_on_host(arp_responses):
+                self.publish_event(PossibleArpSpoofing())

kube_hunter/modules/hunting/capabilities.py

@@ -0,0 +1,49 @@
+import socket
+import logging
+
+from kube_hunter.modules.discovery.hosts import RunningAsPodEvent
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Event, Vulnerability
+from kube_hunter.core.types import Hunter, AccessRisk, KubernetesCluster
+
+logger = logging.getLogger(__name__)
+
+
+class CapNetRawEnabled(Event, Vulnerability):
+    """CAP_NET_RAW is enabled by default for pods.
+    If an attacker manages to compromise a pod,
+    they could potentially take advantage of this capability to perform network
+    attacks on other pods running on the same node"""
+
+    def __init__(self):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="CAP_NET_RAW Enabled",
+            category=AccessRisk,
+        )
+
+
+@handler.subscribe(RunningAsPodEvent)
+class PodCapabilitiesHunter(Hunter):
+    """Pod Capabilities Hunter
+    Checks for default enabled capabilities in a pod
+    """
+
+    def __init__(self, event):
+        self.event = event
+
+    def check_net_raw(self):
+        logger.debug("Passive hunter's trying to open a RAW socket")
+        try:
+            # trying to open a raw socket without CAP_NET_RAW will raise PermissionsError
+            s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_RAW)
+            s.close()
+            logger.debug("Passive hunter's closing RAW socket")
+            return True
+        except PermissionError:
+            logger.debug("CAP_NET_RAW not enabled")
+
+    def execute(self):
+        if self.check_net_raw():
+            self.publish_event(CapNetRawEnabled())

kube_hunter/modules/hunting/certificates.py

@@ -0,0 +1,55 @@
+import ssl
+import logging
+import base64
+import re
+
+from kube_hunter.core.types import Hunter, KubernetesCluster, InformationDisclosure
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Vulnerability, Event, Service
+
+logger = logging.getLogger(__name__)
+email_pattern = re.compile(rb"([a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+)")
+
+
+class CertificateEmail(Vulnerability, Event):
+    """The Kubernetes API Server advertises a public certificate for TLS.
+    This certificate includes an email address, that may provide additional information for an attacker on your
+    organization, or be abused for further email based attacks."""
+
+    def __init__(self, email):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            "Certificate Includes Email Address",
+            category=InformationDisclosure,
+            vid="KHV021",
+        )
+        self.email = email
+        self.evidence = f"email: {self.email}"
+
+
+@handler.subscribe(Service)
+class CertificateDiscovery(Hunter):
+    """Certificate Email Hunting
+    Checks for email addresses in kubernetes ssl certificates
+    """
+
+    def __init__(self, event):
+        self.event = event
+
+    def execute(self):
+        try:
+            logger.debug("Passive hunter is attempting to get server certificate")
+            addr = (str(self.event.host), self.event.port)
+            cert = ssl.get_server_certificate(addr)
+        except ssl.SSLError:
+            # If the server doesn't offer SSL on this port we won't get a certificate
+            return
+        self.examine_certificate(cert)
+
+    def examine_certificate(self, cert):
+        c = cert.strip(ssl.PEM_HEADER).strip("\n").strip(ssl.PEM_FOOTER).strip("\n")
+        certdata = base64.b64decode(c)
+        emails = re.findall(email_pattern, certdata)
+        for email in emails:
+            self.publish_event(CertificateEmail(email=email))

kube_hunter/modules/hunting/cves.py

@@ -1,117 +1,181 @@
 import logging
-import json
-import requests
-
-from __main__ import config
-
-from ...core.events import handler
-from ...core.events.types import Vulnerability, Event, K8sVersionDisclosure
-from ...core.types import Hunter, ActiveHunter, KubernetesCluster, RemoteCodeExec, AccessRisk, InformationDisclosure, \
-    PrivilegeEscalation, DenialOfService, KubectlClient
-from ..discovery.kubectl import KubectlClientEvent
-
 from packaging import version
 
-""" Cluster CVES """
+from kube_hunter.conf import get_config
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Vulnerability, Event, K8sVersionDisclosure
+from kube_hunter.core.types import (
+    Hunter,
+    KubernetesCluster,
+    RemoteCodeExec,
+    PrivilegeEscalation,
+    DenialOfService,
+    KubectlClient,
+)
+from kube_hunter.modules.discovery.kubectl import KubectlClientEvent
+
+logger = logging.getLogger(__name__)
+
+
 class ServerApiVersionEndPointAccessPE(Vulnerability, Event):
     """Node is vulnerable to critical CVE-2018-1002105"""
+
     def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Critical Privilege Escalation CVE", category=PrivilegeEscalation, vid="KHV022")
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Critical Privilege Escalation CVE",
+            category=PrivilegeEscalation,
+            vid="KHV022",
+        )
         self.evidence = evidence
 
+
 class ServerApiVersionEndPointAccessDos(Vulnerability, Event):
-    """Node not patched for CVE-2019-1002100. Depending on your RBAC settings, a crafted json-patch could cause a Denial of Service."""
+    """Node not patched for CVE-2019-1002100. Depending on your RBAC settings,
+    a crafted json-patch could cause a Denial of Service."""
+
     def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Denial of Service to Kubernetes API Server", category=DenialOfService, vid="KHV023")
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Denial of Service to Kubernetes API Server",
+            category=DenialOfService,
+            vid="KHV023",
+        )
         self.evidence = evidence
 
+
 class PingFloodHttp2Implementation(Vulnerability, Event):
-    """Node not patched for CVE-2019-9512. an attacker could cause a Denial of Service by sending specially crafted HTTP requests."""
+    """Node not patched for CVE-2019-9512. an attacker could cause a
+    Denial of Service by sending specially crafted HTTP requests."""
+
     def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Possible Ping Flood Attack", category=DenialOfService, vid="KHV024")
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Possible Ping Flood Attack",
+            category=DenialOfService,
+            vid="KHV024",
+        )
         self.evidence = evidence
 
+
 class ResetFloodHttp2Implementation(Vulnerability, Event):
-    """Node not patched for CVE-2019-9514. an attacker could cause a Denial of Service by sending specially crafted HTTP requests."""
+    """Node not patched for CVE-2019-9514. an attacker could cause a
+    Denial of Service by sending specially crafted HTTP requests."""
+
     def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Possible Reset Flood Attack", category=DenialOfService, vid="KHV025")
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Possible Reset Flood Attack",
+            category=DenialOfService,
+            vid="KHV025",
+        )
         self.evidence = evidence
 
+
 class ServerApiClusterScopedResourcesAccess(Vulnerability, Event):
-    """Api Server not patched for CVE-2019-11247. API server allows access to custom resources via wrong scope"""
+    """Api Server not patched for CVE-2019-11247.
+    API server allows access to custom resources via wrong scope"""
+
     def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Arbitrary Access To Cluster Scoped Resources", category=PrivilegeEscalation, vid="KHV026")
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Arbitrary Access To Cluster Scoped Resources",
+            category=PrivilegeEscalation,
+            vid="KHV026",
+        )
         self.evidence = evidence
 
 
-""" Kubectl CVES """
-
 class IncompleteFixToKubectlCpVulnerability(Vulnerability, Event):
-    """The kubectl client is vulnerable to CVE-2019-11246, an attacker could potentially execute arbitrary code on the client's machine"""
+    """The kubectl client is vulnerable to CVE-2019-11246,
+    an attacker could potentially execute arbitrary code on the client's machine"""
+
     def __init__(self, binary_version):
-        Vulnerability.__init__(self, KubectlClient, "Kubectl Vulnerable To CVE-2019-11246", category=RemoteCodeExec, vid="KHV027")
+        Vulnerability.__init__(
+            self,
+            KubectlClient,
+            "Kubectl Vulnerable To CVE-2019-11246",
+            category=RemoteCodeExec,
+            vid="KHV027",
+        )
         self.binary_version = binary_version
-        self.evidence = "kubectl version: {}".format(self.binary_version)
+        self.evidence = f"kubectl version: {self.binary_version}"
+
 
 class KubectlCpVulnerability(Vulnerability, Event):
-    """The kubectl client is vulnerable to CVE-2019-1002101, an attacker could potentially execute arbitrary code on the client's machine"""
+    """The kubectl client is vulnerable to CVE-2019-1002101,
+    an attacker could potentially execute arbitrary code on the client's machine"""
+
     def __init__(self, binary_version):
-        Vulnerability.__init__(self, KubectlClient, "Kubectl Vulnerable To CVE-2019-1002101", category=RemoteCodeExec, vid="KHV028")
+        Vulnerability.__init__(
+            self,
+            KubectlClient,
+            "Kubectl Vulnerable To CVE-2019-1002101",
+            category=RemoteCodeExec,
+            vid="KHV028",
+        )
         self.binary_version = binary_version
-        self.evidence = "kubectl version: {}".format(self.binary_version)
+        self.evidence = f"kubectl version: {self.binary_version}"
 
 
 class CveUtils:
     @staticmethod
     def get_base_release(full_ver):
         # if LegacyVersion, converting manually to a base version
-        if type(full_ver) == version.LegacyVersion:
-            return version.parse('.'.join(full_ver._version.split('.')[:2]))
-        return version.parse('.'.join(map(str, full_ver._version.release[:2])))
+        if isinstance(full_ver, version.LegacyVersion):
+            return version.parse(".".join(full_ver._version.split(".")[:2]))
+        return version.parse(".".join(map(str, full_ver._version.release[:2])))
 
     @staticmethod
     def to_legacy(full_ver):
         # converting version to version.LegacyVersion
-        return version.LegacyVersion('.'.join(map(str, full_ver._version.release)))
+        return version.LegacyVersion(".".join(map(str, full_ver._version.release)))
 
     @staticmethod
     def to_raw_version(v):
-        if type(v) != version.LegacyVersion:
-            return '.'.join(map(str, v._version.release))
+        if not isinstance(v, version.LegacyVersion):
+            return ".".join(map(str, v._version.release))
         return v._version
-        
+
     @staticmethod
     def version_compare(v1, v2):
         """Function compares two versions, handling differences with conversion to LegacyVersion"""
-        # getting raw version, while striping 'v' char at the start. if exists. 
+        # getting raw version, while striping 'v' char at the start. if exists.
         # removing this char lets us safely compare the two version.
-        v1_raw, v2_raw = CveUtils.to_raw_version(v1).strip('v'), CveUtils.to_raw_version(v2).strip('v')
+        v1_raw = CveUtils.to_raw_version(v1).strip("v")
+        v2_raw = CveUtils.to_raw_version(v2).strip("v")
         new_v1 = version.LegacyVersion(v1_raw)
         new_v2 = version.LegacyVersion(v2_raw)
-        
+
         return CveUtils.basic_compare(new_v1, new_v2)
 
     @staticmethod
     def basic_compare(v1, v2):
-        return (v1>v2)-(v1<v2)
+        return (v1 > v2) - (v1 < v2)
 
     @staticmethod
     def is_downstream_version(version):
-        return any(c in version for c in '+-~')
+        return any(c in version for c in "+-~")
 
     @staticmethod
     def is_vulnerable(fix_versions, check_version, ignore_downstream=False):
-        """Function determines if a version is vulnerable, by comparing to given fix versions by base release"""
+        """Function determines if a version is vulnerable,
+        by comparing to given fix versions by base release"""
         if ignore_downstream and CveUtils.is_downstream_version(check_version):
             return False
 
         vulnerable = False
         check_v = version.parse(check_version)
         base_check_v = CveUtils.get_base_release(check_v)
-        
+
         # default to classic compare, unless the check_version is legacy.
         version_compare_func = CveUtils.basic_compare
-        if type(check_v) == version.LegacyVersion:
+        if isinstance(check_v, version.LegacyVersion):
             version_compare_func = CveUtils.version_compare
 
         if check_version not in fix_versions:
@@ -120,15 +184,15 @@ class CveUtils:
                 fix_v = version.parse(fix_v)
                 base_fix_v = CveUtils.get_base_release(fix_v)
 
-                # if the check version and the current fix has the same base release 
+                # if the check version and the current fix has the same base release
                 if base_check_v == base_fix_v:
-                    # when check_version is legacy, we use a custom compare func, to handle differences between versions.
+                    # when check_version is legacy, we use a custom compare func, to handle differences between versions
                     if version_compare_func(check_v, fix_v) == -1:
                         # determine vulnerable if smaller and with same base version
                         vulnerable = True
                         break
 
-        # if we did't find a fix in the fix releases, checking if the version is smaller that the first fix 
+        # if we did't find a fix in the fix releases, checking if the version is smaller that the first fix
         if not vulnerable and version_compare_func(check_v, version.parse(fix_versions[0])) == -1:
             vulnerable = True
 
@@ -138,21 +202,23 @@ class CveUtils:
 @handler.subscribe_once(K8sVersionDisclosure)
 class K8sClusterCveHunter(Hunter):
     """K8s CVE Hunter
-    Checks if Node is running a Kubernetes version vulnerable to specific important CVEs
+    Checks if Node is running a Kubernetes version vulnerable to
+    specific important CVEs
     """
 
     def __init__(self, event):
         self.event = event
 
     def execute(self):
-        logging.debug('Api Cve Hunter determining vulnerable version: {}'.format(self.event.version))
+        config = get_config()
+        logger.debug(f"Checking known CVEs for k8s API version: {self.event.version}")
         cve_mapping = {
             ServerApiVersionEndPointAccessPE: ["1.10.11", "1.11.5", "1.12.3"],
             ServerApiVersionEndPointAccessDos: ["1.11.8", "1.12.6", "1.13.4"],
             ResetFloodHttp2Implementation: ["1.13.10", "1.14.6", "1.15.3"],
             PingFloodHttp2Implementation: ["1.13.10", "1.14.6", "1.15.3"],
-            ServerApiClusterScopedResourcesAccess: ["1.13.9", "1.14.5", "1.15.2"]
-        }        
+            ServerApiClusterScopedResourcesAccess: ["1.13.9", "1.14.5", "1.15.2"],
+        }
         for vulnerability, fix_versions in cve_mapping.items():
             if CveUtils.is_vulnerable(fix_versions, self.event.version, not config.include_patched_versions):
                 self.publish_event(vulnerability(self.event.version))
@@ -163,15 +229,17 @@ class KubectlCVEHunter(Hunter):
     """Kubectl CVE Hunter
     Checks if the kubectl client is vulnerable to specific important CVEs
     """
+
     def __init__(self, event):
         self.event = event
 
     def execute(self):
+        config = get_config()
         cve_mapping = {
-            KubectlCpVulnerability: ['1.11.9', '1.12.7', '1.13.5' '1.14.0'],
-            IncompleteFixToKubectlCpVulnerability: ['1.12.9', '1.13.6', '1.14.2'] 
+            KubectlCpVulnerability: ["1.11.9", "1.12.7", "1.13.5", "1.14.0"],
+            IncompleteFixToKubectlCpVulnerability: ["1.12.9", "1.13.6", "1.14.2"],
         }
-        logging.debug('Kubectl Cve Hunter determining vulnerable version: {}'.format(self.event.version))
+        logger.debug(f"Checking known CVEs for kubectl version: {self.event.version}")
         for vulnerability, fix_versions in cve_mapping.items():
             if CveUtils.is_vulnerable(fix_versions, self.event.version, not config.include_patched_versions):
                 self.publish_event(vulnerability(binary_version=self.event.version))

kube_hunter/modules/hunting/dashboard.py

@@ -0,0 +1,45 @@
+import logging
+import json
+import requests
+
+from kube_hunter.conf import get_config
+from kube_hunter.core.types import Hunter, RemoteCodeExec, KubernetesCluster
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Vulnerability, Event
+from kube_hunter.modules.discovery.dashboard import KubeDashboardEvent
+
+logger = logging.getLogger(__name__)
+
+
+class DashboardExposed(Vulnerability, Event):
+    """All operations on the cluster are exposed"""
+
+    def __init__(self, nodes):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            "Dashboard Exposed",
+            category=RemoteCodeExec,
+            vid="KHV029",
+        )
+        self.evidence = "nodes: {}".format(" ".join(nodes)) if nodes else None
+
+
+@handler.subscribe(KubeDashboardEvent)
+class KubeDashboard(Hunter):
+    """Dashboard Hunting
+    Hunts open Dashboards, gets the type of nodes in the cluster
+    """
+
+    def __init__(self, event):
+        self.event = event
+
+    def get_nodes(self):
+        config = get_config()
+        logger.debug("Passive hunter is attempting to get nodes types of the cluster")
+        r = requests.get(f"http://{self.event.host}:{self.event.port}/api/v1/node", timeout=config.network_timeout)
+        if r.status_code == 200 and "nodes" in r.text:
+            return [node["objectMeta"]["name"] for node in json.loads(r.text)["nodes"]]
+
+    def execute(self):
+        self.publish_event(DashboardExposed(nodes=self.get_nodes()))

kube_hunter/modules/hunting/dns.py

@@ -1,66 +1,90 @@
 import re
 import logging
 
-from ...core.events import handler
-from ...core.events.types import Event, Vulnerability
-from ...core.types import ActiveHunter, KubernetesCluster, IdentityTheft
-
-from .arp import PossibleArpSpoofing
-
 from scapy.all import IP, ICMP, UDP, DNS, DNSQR, ARP, Ether, sr1, srp1, srp
 
+from kube_hunter.conf import get_config
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Event, Vulnerability
+from kube_hunter.core.types import ActiveHunter, KubernetesCluster, IdentityTheft
+from kube_hunter.modules.hunting.arp import PossibleArpSpoofing
+
+logger = logging.getLogger(__name__)
+
+
 class PossibleDnsSpoofing(Vulnerability, Event):
-    """A malicious pod running on the cluster could potentially run a DNS Spoof attack and perform a MITM attack on applications running in the cluster."""
+    """A malicious pod running on the cluster could potentially run a DNS Spoof attack
+    and perform a MITM attack on applications running in the cluster."""
+
     def __init__(self, kubedns_pod_ip):
-        Vulnerability.__init__(self, KubernetesCluster, "Possible DNS Spoof", category=IdentityTheft, vid="KHV030")
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            "Possible DNS Spoof",
+            category=IdentityTheft,
+            vid="KHV030",
+        )
         self.kubedns_pod_ip = kubedns_pod_ip
-        self.evidence = "kube-dns at: {}".format(self.kubedns_pod_ip)
+        self.evidence = f"kube-dns at: {self.kubedns_pod_ip}"
+
 
 # Only triggered with RunningAsPod base event
 @handler.subscribe(PossibleArpSpoofing)
 class DnsSpoofHunter(ActiveHunter):
     """DNS Spoof Hunter
-    Checks for the possibility for a malicious pod to compromise DNS requests of the cluster (results are based on the running node)
+    Checks for the possibility for a malicious pod to compromise DNS requests of the cluster
+    (results are based on the running node)
     """
+
     def __init__(self, event):
         self.event = event
-    
+
     def get_cbr0_ip_mac(self):
-        res = srp1(Ether() / IP(dst="1.1.1.1" , ttl=1) / ICMP(), verbose=0)
+        config = get_config()
+        res = srp1(Ether() / IP(dst="1.1.1.1", ttl=1) / ICMP(), verbose=0, timeout=config.network_timeout)
         return res[IP].src, res.src
 
     def extract_nameserver_ip(self):
-        with open('/etc/resolv.conf', 'r') as f:
+        with open("/etc/resolv.conf") as f:
             # finds first nameserver in /etc/resolv.conf
             match = re.search(r"nameserver (\d+.\d+.\d+.\d+)", f.read())
             if match:
                 return match.group(1)
 
     def get_kube_dns_ip_mac(self):
+        config = get_config()
         kubedns_svc_ip = self.extract_nameserver_ip()
 
         # getting actual pod ip of kube-dns service, by comparing the src mac of a dns response and arp scanning.
-        dns_info_res = srp1(Ether() / IP(dst=kubedns_svc_ip) / UDP(dport=53) / DNS(rd=1,qd=DNSQR()), verbose=0)
+        dns_info_res = srp1(
+            Ether() / IP(dst=kubedns_svc_ip) / UDP(dport=53) / DNS(rd=1, qd=DNSQR()),
+            verbose=0,
+            timeout=config.network_timeout,
+        )
         kubedns_pod_mac = dns_info_res.src
         self_ip = dns_info_res[IP].dst
 
-        arp_responses, _ = srp(Ether(dst="ff:ff:ff:ff:ff:ff")/ARP(op=1, pdst="{}/24".format(self_ip)), timeout=3, verbose=0)
+        arp_responses, _ = srp(
+            Ether(dst="ff:ff:ff:ff:ff:ff") / ARP(op=1, pdst=f"{self_ip}/24"),
+            timeout=config.network_timeout,
+            verbose=0,
+        )
         for _, response in arp_responses:
             if response[Ether].src == kubedns_pod_mac:
                 return response[ARP].psrc, response.src
 
     def execute(self):
-        logging.debug("Attempting to get kube-dns pod ip")
-        self_ip = sr1(IP(dst="1.1.1.1", ttl=1), ICMP(), verbose=0)[IP].dst 
+        config = get_config()
+        logger.debug("Attempting to get kube-dns pod ip")
+        self_ip = sr1(IP(dst="1.1.1.1", ttl=1) / ICMP(), verbose=0, timeout=config.network_timeout)[IP].dst
         cbr0_ip, cbr0_mac = self.get_cbr0_ip_mac()
 
         kubedns = self.get_kube_dns_ip_mac()
         if kubedns:
             kubedns_ip, kubedns_mac = kubedns
-            logging.debug("ip = {}, kubednsip = {}, cbr0ip = {}".format(self_ip, kubedns_ip, cbr0_ip))
+            logger.debug(f"ip={self_ip} kubednsip={kubedns_ip} cbr0ip={cbr0_ip}")
             if kubedns_mac != cbr0_mac:
                 # if self pod in the same subnet as kube-dns pod
                 self.publish_event(PossibleDnsSpoofing(kubedns_pod_ip=kubedns_ip))
         else:
-            logging.debug("Could not get kubedns identity")
-        
+            logger.debug("Could not get kubedns identity")

kube_hunter/modules/hunting/etcd.py

@@ -0,0 +1,176 @@
+import logging
+import requests
+
+from kube_hunter.conf import get_config
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Vulnerability, Event, OpenPortEvent
+from kube_hunter.core.types import (
+    ActiveHunter,
+    Hunter,
+    KubernetesCluster,
+    InformationDisclosure,
+    RemoteCodeExec,
+    UnauthenticatedAccess,
+    AccessRisk,
+)
+
+logger = logging.getLogger(__name__)
+ETCD_PORT = 2379
+
+
+""" Vulnerabilities """
+
+
+class EtcdRemoteWriteAccessEvent(Vulnerability, Event):
+    """Remote write access might grant an attacker full control over the kubernetes cluster"""
+
+    def __init__(self, write_res):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Etcd Remote Write Access Event",
+            category=RemoteCodeExec,
+            vid="KHV031",
+        )
+        self.evidence = write_res
+
+
+class EtcdRemoteReadAccessEvent(Vulnerability, Event):
+    """Remote read access might expose to an attacker cluster's possible exploits, secrets and more."""
+
+    def __init__(self, keys):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Etcd Remote Read Access Event",
+            category=AccessRisk,
+            vid="KHV032",
+        )
+        self.evidence = keys
+
+
+class EtcdRemoteVersionDisclosureEvent(Vulnerability, Event):
+    """Remote version disclosure might give an attacker a valuable data to attack a cluster"""
+
+    def __init__(self, version):
+
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Etcd Remote version disclosure",
+            category=InformationDisclosure,
+            vid="KHV033",
+        )
+        self.evidence = version
+
+
+class EtcdAccessEnabledWithoutAuthEvent(Vulnerability, Event):
+    """Etcd is accessible using HTTP (without authorization and authentication),
+    it would allow a potential attacker to
+     gain access to the etcd"""
+
+    def __init__(self, version):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Etcd is accessible using insecure connection (HTTP)",
+            category=UnauthenticatedAccess,
+            vid="KHV034",
+        )
+        self.evidence = version
+
+
+# Active Hunter
+@handler.subscribe(OpenPortEvent, predicate=lambda p: p.port == ETCD_PORT)
+class EtcdRemoteAccessActive(ActiveHunter):
+    """Etcd Remote Access
+    Checks for remote write access to etcd, will attempt to add a new key to the etcd DB"""
+
+    def __init__(self, event):
+        self.event = event
+        self.write_evidence = ""
+        self.event.protocol = "https"
+
+    def db_keys_write_access(self):
+        config = get_config()
+        logger.debug(f"Trying to write keys remotely on host {self.event.host}")
+        data = {"value": "remotely written data"}
+        try:
+            r = requests.post(
+                f"{self.event.protocol}://{self.event.host}:{ETCD_PORT}/v2/keys/message",
+                data=data,
+                timeout=config.network_timeout,
+            )
+            self.write_evidence = r.content if r.status_code == 200 and r.content else False
+            return self.write_evidence
+        except requests.exceptions.ConnectionError:
+            return False
+
+    def execute(self):
+        if self.db_keys_write_access():
+            self.publish_event(EtcdRemoteWriteAccessEvent(self.write_evidence))
+
+
+# Passive Hunter
+@handler.subscribe(OpenPortEvent, predicate=lambda p: p.port == ETCD_PORT)
+class EtcdRemoteAccess(Hunter):
+    """Etcd Remote Access
+    Checks for remote availability of etcd, its version, and read access to the DB
+    """
+
+    def __init__(self, event):
+        self.event = event
+        self.version_evidence = ""
+        self.keys_evidence = ""
+        self.event.protocol = "https"
+
+    def db_keys_disclosure(self):
+        config = get_config()
+        logger.debug(f"{self.event.host} Passive hunter is attempting to read etcd keys remotely")
+        try:
+            r = requests.get(
+                f"{self.event.protocol}://{self.event.host}:{ETCD_PORT}/v2/keys",
+                verify=False,
+                timeout=config.network_timeout,
+            )
+            self.keys_evidence = r.content if r.status_code == 200 and r.content != "" else False
+            return self.keys_evidence
+        except requests.exceptions.ConnectionError:
+            return False
+
+    def version_disclosure(self):
+        config = get_config()
+        logger.debug(f"Trying to check etcd version remotely at {self.event.host}")
+        try:
+            r = requests.get(
+                f"{self.event.protocol}://{self.event.host}:{ETCD_PORT}/version",
+                verify=False,
+                timeout=config.network_timeout,
+            )
+            self.version_evidence = r.content if r.status_code == 200 and r.content else False
+            return self.version_evidence
+        except requests.exceptions.ConnectionError:
+            return False
+
+    def insecure_access(self):
+        config = get_config()
+        logger.debug(f"Trying to access etcd insecurely at {self.event.host}")
+        try:
+            r = requests.get(
+                f"http://{self.event.host}:{ETCD_PORT}/version",
+                verify=False,
+                timeout=config.network_timeout,
+            )
+            return r.content if r.status_code == 200 and r.content else False
+        except requests.exceptions.ConnectionError:
+            return False
+
+    def execute(self):
+        if self.insecure_access():  # make a decision between http and https protocol
+            self.event.protocol = "http"
+        if self.version_disclosure():
+            self.publish_event(EtcdRemoteVersionDisclosureEvent(self.version_evidence))
+            if self.event.protocol == "http":
+                self.publish_event(EtcdAccessEnabledWithoutAuthEvent(self.version_evidence))
+            if self.db_keys_disclosure():
+                self.publish_event(EtcdRemoteReadAccessEvent(self.keys_evidence))

kube_hunter/modules/hunting/mounts.py

@@ -1,33 +1,62 @@
 import logging
-import json
+import re
 import uuid
 
-from ...core.events import handler
-from ...core.events.types import Event, Vulnerability
-from ...core.types import ActiveHunter, Hunter, KubernetesCluster, PrivilegeEscalation
-from .kubelet import ExposedPodsHandler, ExposedRunHandler, KubeletHandlers
+from kube_hunter.conf import get_config
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Event, Vulnerability
+from kube_hunter.core.types import (
+    ActiveHunter,
+    Hunter,
+    KubernetesCluster,
+    PrivilegeEscalation,
+)
+from kube_hunter.modules.hunting.kubelet import (
+    ExposedPodsHandler,
+    ExposedRunHandler,
+    KubeletHandlers,
+)
+
+logger = logging.getLogger(__name__)
+
 
-""" Vulnerabilities """
 class WriteMountToVarLog(Vulnerability, Event):
     """A pod can create symlinks in the /var/log directory on the host, which can lead to a root directory traveral"""
+
     def __init__(self, pods):
-        Vulnerability.__init__(self, KubernetesCluster, "Pod With Mount To /var/log", category=PrivilegeEscalation, vid="KHV047")
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            "Pod With Mount To /var/log",
+            category=PrivilegeEscalation,
+            vid="KHV047",
+        )
         self.pods = pods
-        self.evidence = "pods: {}".format(', '.join((pod["metadata"]["name"] for pod in self.pods)))
+        self.evidence = "pods: {}".format(", ".join(pod["metadata"]["name"] for pod in self.pods))
+
 
 class DirectoryTraversalWithKubelet(Vulnerability, Event):
-    """An attacker can run commands on pods with mount to /var/log, and traverse read all files on the host filesystem"""
+    """An attacker can run commands on pods with mount to /var/log,
+    and traverse read all files on the host filesystem"""
+
     def __init__(self, output):
-        Vulnerability.__init__(self, KubernetesCluster, "Root Traversal Read On The Kubelet", category=PrivilegeEscalation)
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            "Root Traversal Read On The Kubelet",
+            category=PrivilegeEscalation,
+        )
         self.output = output
-        self.evidence = "output: {}".format(self.output)
+        self.evidence = f"output: {self.output}"
+
 
 @handler.subscribe(ExposedPodsHandler)
 class VarLogMountHunter(Hunter):
     """Mount Hunter - /var/log
-    Hunt pods that have write access to host's /var/log. in such case, 
+    Hunt pods that have write access to host's /var/log. in such case,
     the pod can traverse read files on the host machine
     """
+
     def __init__(self, event):
         self.event = event
 
@@ -38,7 +67,7 @@ class VarLogMountHunter(Hunter):
                 if "Directory" in volume["hostPath"]["type"]:
                     if volume["hostPath"]["path"].startswith(path):
                         return volume
-    
+
     def execute(self):
         pe_pods = []
         for pod in self.event.pods:
@@ -47,28 +76,35 @@ class VarLogMountHunter(Hunter):
         if pe_pods:
             self.publish_event(WriteMountToVarLog(pods=pe_pods))
 
+
 @handler.subscribe(ExposedRunHandler)
 class ProveVarLogMount(ActiveHunter):
     """Prove /var/log Mount Hunter
     Tries to read /etc/shadow on the host by running commands inside a pod with host mount to /var/log
     """
+
     def __init__(self, event):
         self.event = event
-        self.base_path = "https://{host}:{port}/".format(host=self.event.host, port=self.event.port)
+        self.base_path = f"https://{self.event.host}:{self.event.port}"
 
     def run(self, command, container):
         run_url = KubeletHandlers.RUN.value.format(
             podNamespace=container["namespace"],
             podID=container["pod"],
             containerName=container["name"],
-            cmd=command
+            cmd=command,
         )
-        return self.event.session.post(self.base_path + run_url, verify=False).text
+        return self.event.session.post(f"{self.base_path}/{run_url}", verify=False).text
 
     # TODO: replace with multiple subscription to WriteMountToVarLog as well
     def get_varlog_mounters(self):
-        logging.debug("accessing /pods manually on ProveVarLogMount")
-        pods = json.loads(self.event.session.get(self.base_path + KubeletHandlers.PODS.value, verify=False).text)["items"]
+        config = get_config()
+        logger.debug("accessing /pods manually on ProveVarLogMount")
+        pods = self.event.session.get(
+            f"{self.base_path}/" + KubeletHandlers.PODS.value,
+            verify=False,
+            timeout=config.network_timeout,
+        ).json()["items"]
         for pod in pods:
             volume = VarLogMountHunter(ExposedPodsHandler(pods=pods)).has_write_mount_to(pod, "/var/log")
             if volume:
@@ -79,32 +115,44 @@ class ProveVarLogMount(ActiveHunter):
         for container in pod["spec"]["containers"]:
             for volume_mount in container["volumeMounts"]:
                 if volume_mount["name"] == mount_name:
-                    logging.debug("yielding {}".format(container))
+                    logger.debug(f"yielding {container}")
                     yield container, volume_mount["mountPath"]
 
     def traverse_read(self, host_file, container, mount_path, host_path):
         """Returns content of file on the host, and cleans trails"""
+        config = get_config()
         symlink_name = str(uuid.uuid4())
         # creating symlink to file
-        self.run("ln -s {} {}/{}".format(host_file, mount_path, symlink_name), container=container)
+        self.run(f"ln -s {host_file} {mount_path}/{symlink_name}", container)
         # following symlink with kubelet
-        path_in_logs_endpoint = KubeletHandlers.LOGS.value.format(path=host_path.strip('/var/log')+symlink_name)
-        content = self.event.session.get("{}{}".format(self.base_path, path_in_logs_endpoint), verify=False).text
+        path_in_logs_endpoint = KubeletHandlers.LOGS.value.format(
+            path=re.sub(r"^/var/log", "", host_path) + symlink_name
+        )
+        content = self.event.session.get(
+            f"{self.base_path}/{path_in_logs_endpoint}",
+            verify=False,
+            timeout=config.network_timeout,
+        ).text
         # removing symlink
-        self.run("rm {}/{}".format(mount_path, symlink_name), container=container)
+        self.run(f"rm {mount_path}/{symlink_name}", container=container)
         return content
 
     def execute(self):
         for pod, volume in self.get_varlog_mounters():
             for container, mount_path in self.mount_path_from_mountname(pod, volume["name"]):
-                logging.debug("correleated container to mount_name")
+                logger.debug("Correlated container to mount_name")
                 cont = {
                     "name": container["name"],
                     "pod": pod["metadata"]["name"],
                     "namespace": pod["metadata"]["namespace"],
                 }
                 try:
-                    output = self.traverse_read("/etc/shadow", container=cont, mount_path=mount_path, host_path=volume["hostPath"]["path"])
+                    output = self.traverse_read(
+                        "/etc/shadow",
+                        container=cont,
+                        mount_path=mount_path,
+                        host_path=volume["hostPath"]["path"],
+                    )
                     self.publish_event(DirectoryTraversalWithKubelet(output=output))
-                except Exception as x:
-                    logging.debug("could not exploit /var/log: {}".format(x))
+                except Exception:
+                    logger.debug("Could not exploit /var/log", exc_info=True)

kube_hunter/modules/hunting/proxy.py

@@ -0,0 +1,127 @@
+import logging
+import requests
+
+from enum import Enum
+
+from kube_hunter.conf import get_config
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Event, Vulnerability, K8sVersionDisclosure
+from kube_hunter.core.types import (
+    ActiveHunter,
+    Hunter,
+    KubernetesCluster,
+    InformationDisclosure,
+)
+from kube_hunter.modules.discovery.dashboard import KubeDashboardEvent
+from kube_hunter.modules.discovery.proxy import KubeProxyEvent
+
+logger = logging.getLogger(__name__)
+
+
+class KubeProxyExposed(Vulnerability, Event):
+    """All operations on the cluster are exposed"""
+
+    def __init__(self):
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            "Proxy Exposed",
+            category=InformationDisclosure,
+            vid="KHV049",
+        )
+
+
+class Service(Enum):
+    DASHBOARD = "kubernetes-dashboard"
+
+
+@handler.subscribe(KubeProxyEvent)
+class KubeProxy(Hunter):
+    """Proxy Hunting
+    Hunts for a dashboard behind the proxy
+    """
+
+    def __init__(self, event):
+        self.event = event
+        self.api_url = f"http://{self.event.host}:{self.event.port}/api/v1"
+
+    def execute(self):
+        self.publish_event(KubeProxyExposed())
+        for namespace, services in self.services.items():
+            for service in services:
+                if service == Service.DASHBOARD.value:
+                    logger.debug(f"Found a dashboard service '{service}'")
+                    # TODO: check if /proxy is a convention on other services
+                    curr_path = f"api/v1/namespaces/{namespace}/services/{service}/proxy"
+                    self.publish_event(KubeDashboardEvent(path=curr_path, secure=False))
+
+    @property
+    def namespaces(self):
+        config = get_config()
+        resource_json = requests.get(f"{self.api_url}/namespaces", timeout=config.network_timeout).json()
+        return self.extract_names(resource_json)
+
+    @property
+    def services(self):
+        config = get_config()
+        # map between namespaces and service names
+        services = dict()
+        for namespace in self.namespaces:
+            resource_path = f"{self.api_url}/namespaces/{namespace}/services"
+            resource_json = requests.get(resource_path, timeout=config.network_timeout).json()
+            services[namespace] = self.extract_names(resource_json)
+        logger.debug(f"Enumerated services [{' '.join(services)}]")
+        return services
+
+    @staticmethod
+    def extract_names(resource_json):
+        names = list()
+        for item in resource_json["items"]:
+            names.append(item["metadata"]["name"])
+        return names
+
+
+@handler.subscribe(KubeProxyExposed)
+class ProveProxyExposed(ActiveHunter):
+    """Build Date Hunter
+    Hunts when proxy is exposed, extracts the build date of kubernetes
+    """
+
+    def __init__(self, event):
+        self.event = event
+
+    def execute(self):
+        config = get_config()
+        version_metadata = requests.get(
+            f"http://{self.event.host}:{self.event.port}/version",
+            verify=False,
+            timeout=config.network_timeout,
+        ).json()
+        if "buildDate" in version_metadata:
+            self.event.evidence = "build date: {}".format(version_metadata["buildDate"])
+
+
+@handler.subscribe(KubeProxyExposed)
+class K8sVersionDisclosureProve(ActiveHunter):
+    """K8s Version Hunter
+    Hunts Proxy when exposed, extracts the version
+    """
+
+    def __init__(self, event):
+        self.event = event
+
+    def execute(self):
+        config = get_config()
+        version_metadata = requests.get(
+            f"http://{self.event.host}:{self.event.port}/version",
+            verify=False,
+            timeout=config.network_timeout,
+        ).json()
+        if "gitVersion" in version_metadata:
+            self.publish_event(
+                K8sVersionDisclosure(
+                    version=version_metadata["gitVersion"],
+                    from_endpoint="/version",
+                    extra_info="on kube-proxy",
+                )
+            )

kube_hunter/modules/hunting/secrets.py

@@ -1,29 +1,38 @@
-import json
 import logging
 import os
 
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import Vulnerability, Event
+from kube_hunter.core.types import Hunter, KubernetesCluster, AccessRisk
+from kube_hunter.modules.discovery.hosts import RunningAsPodEvent
 
-import requests
+logger = logging.getLogger(__name__)
 
-from ...core.events import handler
-from ...core.events.types import Vulnerability, Event
-from ...core.types import Hunter, KubernetesCluster, AccessRisk
-from ..discovery.hosts import RunningAsPodEvent
 
-""" Vulnerabilities """
 class ServiceAccountTokenAccess(Vulnerability, Event):
     """ Accessing the pod service account token gives an attacker the option to use the server API """
 
     def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Read access to pod's service account token",
-                               category=AccessRisk, vid="KHV050")
+        Vulnerability.__init__(
+            self,
+            KubernetesCluster,
+            name="Read access to pod's service account token",
+            category=AccessRisk,
+            vid="KHV050",
+        )
         self.evidence = evidence
 
+
 class SecretsAccess(Vulnerability, Event):
     """ Accessing the pod's secrets within a compromised pod might disclose valuable data to a potential attacker"""
 
     def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Access to pod's secrets", category=AccessRisk)
+        Vulnerability.__init__(
+            self,
+            component=KubernetesCluster,
+            name="Access to pod's secrets",
+            category=AccessRisk,
+        )
         self.evidence = evidence
 
 
@@ -35,14 +44,16 @@ class AccessSecrets(Hunter):
 
     def __init__(self, event):
         self.event = event
-        self.secrets_evidence = ''
+        self.secrets_evidence = ""
 
     def get_services(self):
-        logging.debug(self.event.host)
-        logging.debug('Passive Hunter is attempting to access pod\'s secrets directory')
+        logger.debug("Trying to access pod's secrets directory")
         # get all files and subdirectories files:
-        self.secrets_evidence = [val for sublist in [[os.path.join(i[0], j) for j in i[2]] for i in os.walk('/var/run/secrets/')] for val in sublist]
-        return True if (len(self.secrets_evidence) > 0) else False
+        self.secrets_evidence = []
+        for dirname, _, files in os.walk("/var/run/secrets/"):
+            for f in files:
+                self.secrets_evidence.append(os.path.join(dirname, f))
+        return len(self.secrets_evidence) > 0
 
     def execute(self):
         if self.event.auth_token is not None:

kube_hunter/modules/report/__init__.py

@@ -0,0 +1,2 @@
+# flake8: noqa: E402
+from kube_hunter.modules.report.factory import get_reporter, get_dispatcher

kube_hunter/modules/report/base.py

@@ -0,0 +1,70 @@
+from kube_hunter.core.types import Discovery
+from kube_hunter.modules.report.collector import (
+    services,
+    vulnerabilities,
+    hunters,
+    services_lock,
+    vulnerabilities_lock,
+)
+
+BASE_KB_LINK = "https://avd.aquasec.com/"
+FULL_KB_LINK = "https://avd.aquasec.com/kube-hunter/{vid}/"
+
+
+class BaseReporter:
+    def get_nodes(self):
+        nodes = list()
+        node_locations = set()
+        with services_lock:
+            for service in services:
+                node_location = str(service.host)
+                if node_location not in node_locations:
+                    nodes.append({"type": "Node/Master", "location": node_location})
+                    node_locations.add(node_location)
+        return nodes
+
+    def get_services(self):
+        with services_lock:
+            return [
+                {"service": service.get_name(), "location": f"{service.host}:{service.port}{service.get_path()}"}
+                for service in services
+            ]
+
+    def get_vulnerabilities(self):
+        with vulnerabilities_lock:
+            return [
+                {
+                    "location": vuln.location(),
+                    "vid": vuln.get_vid(),
+                    "category": vuln.category.name,
+                    "severity": vuln.get_severity(),
+                    "vulnerability": vuln.get_name(),
+                    "description": vuln.explain(),
+                    "evidence": str(vuln.evidence),
+                    "avd_reference": FULL_KB_LINK.format(vid=vuln.get_vid().lower()),
+                    "hunter": vuln.hunter.get_name(),
+                }
+                for vuln in vulnerabilities
+            ]
+
+    def get_hunter_statistics(self):
+        hunters_data = []
+        for hunter, docs in hunters.items():
+            if Discovery not in hunter.__mro__:
+                name, doc = hunter.parse_docs(docs)
+                hunters_data.append(
+                    {"name": name, "description": doc, "vulnerabilities": hunter.publishedVulnerabilities}
+                )
+        return hunters_data
+
+    def get_report(self, *, statistics, **kwargs):
+        report = {
+            "nodes": self.get_nodes(),
+            "services": self.get_services(),
+            "vulnerabilities": self.get_vulnerabilities(),
+        }
+
+        if statistics:
+            report["hunter_statistics"] = self.get_hunter_statistics()
+
+        return report

kube_hunter/modules/report/collector.py

@@ -0,0 +1,69 @@
+import logging
+import threading
+
+from kube_hunter.conf import get_config
+from kube_hunter.core.events import handler
+from kube_hunter.core.events.types import (
+    Event,
+    Service,
+    Vulnerability,
+    HuntFinished,
+    HuntStarted,
+    ReportDispatched,
+)
+
+logger = logging.getLogger(__name__)
+
+services_lock = threading.Lock()
+services = list()
+vulnerabilities_lock = threading.Lock()
+vulnerabilities = list()
+hunters = handler.all_hunters
+
+
+@handler.subscribe(Service)
+@handler.subscribe(Vulnerability)
+class Collector:
+    def __init__(self, event=None):
+        self.event = event
+
+    def execute(self):
+        """function is called only when collecting data"""
+        global services
+        global vulnerabilities
+        bases = self.event.__class__.__mro__
+        if Service in bases:
+            with services_lock:
+                services.append(self.event)
+            logger.info(f'Found open service "{self.event.get_name()}" at {self.event.location()}')
+        elif Vulnerability in bases:
+            with vulnerabilities_lock:
+                vulnerabilities.append(self.event)
+            logger.info(f'Found vulnerability "{self.event.get_name()}" in {self.event.location()}')
+
+
+class TablesPrinted(Event):
+    pass
+
+
+@handler.subscribe(HuntFinished)
+class SendFullReport:
+    def __init__(self, event):
+        self.event = event
+
+    def execute(self):
+        config = get_config()
+        report = config.reporter.get_report(statistics=config.statistics, mapping=config.mapping)
+        config.dispatcher.dispatch(report)
+        handler.publish_event(ReportDispatched())
+        handler.publish_event(TablesPrinted())
+
+
+@handler.subscribe(HuntStarted)
+class StartedInfo:
+    def __init__(self, event):
+        self.event = event
+
+    def execute(self):
+        logger.info("Started hunting")
+        logger.info("Discovering Open Kubernetes Services")

kube_hunter/modules/report/dispatchers.py

@@ -0,0 +1,33 @@
+import logging
+import os
+import requests
+
+logger = logging.getLogger(__name__)
+
+
+class HTTPDispatcher:
+    def dispatch(self, report):
+        logger.debug("Dispatching report via HTTP")
+        dispatch_method = os.environ.get("KUBEHUNTER_HTTP_DISPATCH_METHOD", "POST").upper()
+        dispatch_url = os.environ.get("KUBEHUNTER_HTTP_DISPATCH_URL", "https://localhost/")
+        try:
+            r = requests.request(
+                dispatch_method,
+                dispatch_url,
+                json=report,
+                headers={"Content-Type": "application/json"},
+            )
+            r.raise_for_status()
+            logger.info(f"Report was dispatched to: {dispatch_url}")
+            logger.debug(f"Dispatch responded {r.status_code} with: {r.text}")
+
+        except requests.HTTPError:
+            logger.exception(f"Failed making HTTP {dispatch_method} to {dispatch_url}, " f"status code {r.status_code}")
+        except Exception:
+            logger.exception(f"Could not dispatch report to {dispatch_url}")
+
+
+class STDOUTDispatcher:
+    def dispatch(self, report):
+        logger.debug("Dispatching report via stdout")
+        print(report)

kube_hunter/modules/report/factory.py

@@ -0,0 +1,37 @@
+import logging
+
+from kube_hunter.modules.report.json import JSONReporter
+from kube_hunter.modules.report.yaml import YAMLReporter
+from kube_hunter.modules.report.plain import PlainReporter
+from kube_hunter.modules.report.dispatchers import STDOUTDispatcher, HTTPDispatcher
+
+logger = logging.getLogger(__name__)
+
+DEFAULT_REPORTER = "plain"
+reporters = {
+    "yaml": YAMLReporter,
+    "json": JSONReporter,
+    "plain": PlainReporter,
+}
+
+DEFAULT_DISPATCHER = "stdout"
+dispatchers = {
+    "stdout": STDOUTDispatcher,
+    "http": HTTPDispatcher,
+}
+
+
+def get_reporter(name):
+    try:
+        return reporters[name.lower()]()
+    except KeyError:
+        logger.warning(f'Unknown reporter "{name}", using f{DEFAULT_REPORTER}')
+        return reporters[DEFAULT_REPORTER]()
+
+
+def get_dispatcher(name):
+    try:
+        return dispatchers[name.lower()]()
+    except KeyError:
+        logger.warning(f'Unknown dispatcher "{name}", using {DEFAULT_DISPATCHER}')
+        return dispatchers[DEFAULT_DISPATCHER]()

kube_hunter/modules/report/json.py

@@ -0,0 +1,9 @@
+import json
+
+from kube_hunter.modules.report.base import BaseReporter
+
+
+class JSONReporter(BaseReporter):
+    def get_report(self, **kwargs):
+        report = super().get_report(**kwargs)
+        return json.dumps(report)

kube_hunter/modules/report/plain.py

@@ -1,39 +1,40 @@
-from __future__ import print_function
-
 from prettytable import ALL, PrettyTable
 
-from __main__ import config
-from .collector import services, vulnerabilities, hunters, services_lock, vulnerabilities_lock
-from .base import BaseReporter
+from kube_hunter.modules.report.base import BaseReporter, BASE_KB_LINK
+from kube_hunter.modules.report.collector import (
+    services,
+    vulnerabilities,
+    hunters,
+    services_lock,
+    vulnerabilities_lock,
+)
 
-EVIDENCE_PREVIEW = 40
+EVIDENCE_PREVIEW = 100
 MAX_TABLE_WIDTH = 20
-KB_LINK = "https://github.com/aquasecurity/kube-hunter/tree/master/docs/kb"
 
 
 class PlainReporter(BaseReporter):
-
-    def get_report(self):
+    def get_report(self, *, statistics=None, mapping=None, **kwargs):
         """generates report tables"""
         output = ""
-        
+
         with vulnerabilities_lock:
             vulnerabilities_len = len(vulnerabilities)
 
         hunters_len = len(hunters.items())
-        
+
         with services_lock:
             services_len = len(services)
 
         if services_len:
             output += self.nodes_table()
-            if not config.mapping:
+            if not mapping:
                 output += self.services_table()
                 if vulnerabilities_len:
                     output += self.vulns_table()
                 else:
                     output += "\nNo vulnerabilities were found"
-                if config.statistics:
+                if statistics:
                     if hunters_len:
                         output += self.hunters_table()
                     else:
@@ -42,7 +43,6 @@ class PlainReporter(BaseReporter):
             if vulnerabilities_len:
                 output += self.vulns_table()
             output += "\nKube Hunter couldn't find any clusters"
-            # print("\nKube Hunter couldn't find any clusters. {}".format("Maybe try with --active?" if not config.active else ""))
         return output
 
     def nodes_table(self):
@@ -59,7 +59,7 @@ class PlainReporter(BaseReporter):
             if service.event_id not in id_memory:
                 nodes_table.add_row(["Node/Master", service.host])
                 id_memory.add(service.event_id)
-        nodes_ret = "\nNodes\n{}\n".format(nodes_table)
+        nodes_ret = f"\nNodes\n{nodes_table}\n"
         services_lock.release()
         return nodes_ret
 
@@ -73,12 +73,21 @@ class PlainReporter(BaseReporter):
         services_table.header_style = "upper"
         with services_lock:
             for service in services:
-                services_table.add_row([service.get_name(), "{}:{}{}".format(service.host, service.port, service.get_path()), service.explain()])
-            detected_services_ret = "\nDetected Services\n{}\n".format(services_table)
+                services_table.add_row(
+                    [service.get_name(), f"{service.host}:{service.port}{service.get_path()}", service.explain()]
+                )
+            detected_services_ret = f"\nDetected Services\n{services_table}\n"
         return detected_services_ret
 
     def vulns_table(self):
-        column_names = ["ID", "Location", "Category", "Vulnerability", "Description", "Evidence"]
+        column_names = [
+            "ID",
+            "Location",
+            "Category",
+            "Vulnerability",
+            "Description",
+            "Evidence",
+        ]
         vuln_table = PrettyTable(column_names, hrules=ALL)
         vuln_table.align = "l"
         vuln_table.max_width = MAX_TABLE_WIDTH
@@ -89,10 +98,23 @@ class PlainReporter(BaseReporter):
 
         with vulnerabilities_lock:
             for vuln in vulnerabilities:
-                evidence = str(vuln.evidence)[:EVIDENCE_PREVIEW] + "..." if len(str(vuln.evidence)) > EVIDENCE_PREVIEW else str(vuln.evidence)
-                row = [vuln.get_vid(), vuln.location(), vuln.category.name, vuln.get_name(), vuln.explain(), evidence]
+                evidence = str(vuln.evidence)
+                if len(evidence) > EVIDENCE_PREVIEW:
+                    evidence = evidence[:EVIDENCE_PREVIEW] + "..."
+                row = [
+                    vuln.get_vid(),
+                    vuln.location(),
+                    vuln.category.name,
+                    vuln.get_name(),
+                    vuln.explain(),
+                    evidence,
+                ]
                 vuln_table.add_row(row)
-        return "\nVulnerabilities\nFor further information about a vulnerability, search its ID in: \n{}\n{}\n".format(KB_LINK, vuln_table)
+        return (
+            "\nVulnerabilities\n"
+            "For further information about a vulnerability, search its ID in: \n"
+            f"{BASE_KB_LINK}\n{vuln_table}\n"
+        )
 
     def hunters_table(self):
         column_names = ["Name", "Description", "Vulnerabilities"]
@@ -107,4 +129,4 @@ class PlainReporter(BaseReporter):
         hunter_statistics = self.get_hunter_statistics()
         for item in hunter_statistics:
             hunters_table.add_row([item.get("name"), item.get("description"), item.get("vulnerabilities")])
-        return "\nHunter Statistics\n{}\n".format(hunters_table)
+        return f"\nHunter Statistics\n{hunters_table}\n"

kube_hunter/modules/report/yaml.py

@@ -1,13 +1,13 @@
 from io import StringIO
 from ruamel.yaml import YAML
-from .base import BaseReporter
-from __main__ import config
+
+from kube_hunter.modules.report.base import BaseReporter
 
 
 class YAMLReporter(BaseReporter):
-    def get_report(self):
-        report = super().get_report()
+    def get_report(self, **kwargs):
+        report = super().get_report(**kwargs)
         output = StringIO()
         yaml = YAML()
         yaml.dump(report, output)
-        return output.getvalue()
+        return output.getvalue()

kube_hunter/plugins/__init__.py

@@ -0,0 +1,23 @@
+import pluggy
+
+from kube_hunter.plugins import hookspecs
+
+hookimpl = pluggy.HookimplMarker("kube-hunter")
+
+
+def initialize_plugin_manager():
+    """
+    Initializes and loads all default and setup implementations for registered plugins
+
+    @return: initialized plugin manager
+    """
+    pm = pluggy.PluginManager("kube-hunter")
+    pm.add_hookspecs(hookspecs)
+    pm.load_setuptools_entrypoints("kube_hunter")
+
+    # default registration of builtin implemented plugins
+    from kube_hunter.conf import parser
+
+    pm.register(parser)
+
+    return pm

kube_hunter/plugins/hookspecs.py

@@ -0,0 +1,24 @@
+import pluggy
+from argparse import ArgumentParser
+
+hookspec = pluggy.HookspecMarker("kube-hunter")
+
+
+@hookspec
+def parser_add_arguments(parser: ArgumentParser):
+    """Add arguments to the ArgumentParser.
+
+    If a plugin requires an aditional argument, it should implement this hook
+    and add the argument to the Argument Parser
+
+    @param parser: an ArgumentParser, calls parser.add_argument on it
+    """
+
+
+@hookspec
+def load_plugin(args):
+    """Plugins that wish to execute code after the argument parsing
+    should implement this hook.
+
+    @param args: all parsed arguments passed to kube-hunter
+    """

mypy.ini

@@ -0,0 +1,2 @@
+[mypy]
+ignore_missing_imports = True

plugins/README.md

@@ -1,14 +0,0 @@
-# Plugins
-
-This folder contains modules that will load before any parsing of arguments by kubehunter's main module  
-
-An example for using a plugin to add an argument:
-```python
-# example.py
-from __main__ import parser
-
-parser.add_argument('--exampleflag', action="store_true", help="enables active hunting")
-```
-What we did here was just add a file to the `plugins/` folder, import the parser, and adding an argument.
-
-All plugins in this folder gets imported right after the main arguments are added, and right before they are getting parsed, so you can add an argument that will later be used in your [hunting/discovery module](../src/README.md).

plugins/__init__.py

@@ -1,7 +0,0 @@
-from os.path import dirname, basename, isfile
-import glob
-
-# dynamically importing all modules in folder
-files = glob.glob(dirname(__file__)+"/*.py")
-for module_name in (basename(f)[:-3] for f in files if isfile(f) and not f.endswith('__init__.py')):
-    exec('from .{} import *'.format(module_name))

plugins/logging_mod.py

@@ -1,5 +0,0 @@
-import logging
-
-# Suppress logging from scapy
-logging.getLogger("scapy.runtime").setLevel(logging.CRITICAL)
-logging.getLogger("scapy.loading").setLevel(logging.CRITICAL)

pyinstaller_hooks/hook-prettytable.py

@@ -0,0 +1,3 @@
+from PyInstaller.utils.hooks import collect_all
+
+datas, binaries, hiddenimports = collect_all("prettytable")

pyproject.toml

@@ -0,0 +1,32 @@
+[tool.black]
+line-length = 120
+target-version = ['py36']
+include = '\.pyi?$'
+exclude = '''
+(
+    \.eggs
+  | \.git
+  | \.hg
+  | \.mypy_cache
+  | \.tox
+  | \venv
+  | \.venv
+  | _build
+  | buck-out
+  | build
+  | dist
+  | \.vscode
+  | \.idea
+  | \.Python
+  | develop-eggs
+  | downloads
+  | eggs
+  | lib
+  | lib64
+  | parts
+  | sdist
+  | var
+  | .*\.egg-info
+  | \.DS_Store
+)
+'''

requirements-dev.txt

@@ -1,2 +1,17 @@
+-r requirements.txt
+
 flake8
-pytest
+pytest >= 2.9.1
+requests-mock >= 1.8
+coverage < 5.0
+pytest-cov
+setuptools >= 30.3.0
+setuptools_scm
+twine
+pyinstaller
+staticx
+black
+pre-commit
+flake8-bugbear
+flake8-mypy
+pluggy

requirements.txt

@@ -1,11 +1 @@
-enum34 ; python_version<='3.4'
-netaddr
-netifaces
-scapy>=2.4.3
-requests
-PrettyTable
-urllib3>=1.24.2,<1.25
-ruamel.yaml
-requests_mock
-future
-packaging
+-e .

runtest.py

@@ -1,27 +0,0 @@
-import argparse
-import pytest 
-
-parser = argparse.ArgumentParser(description='Kube-Hunter tests')
-parser.add_argument('--list', action="store_true", help="displays all tests in kubehunter (add --active flag to see active tests)")
-parser.add_argument('--interface', action="store_true", help="set hunting of all interface network interfaces")
-parser.add_argument('--pod', action="store_true", help="set hunter as an insider pod")
-parser.add_argument('--quick', action="store_true", help="Prefer quick scan (subnet 24)")
-parser.add_argument('--include-patched-versions', action="store_true", help="Don't skip patched versions when scanning")
-parser.add_argument('--cidr', type=str, help="set an ip range to scan, example: 192.168.0.0/16")
-parser.add_argument('--mapping', action="store_true", help="outputs only a mapping of the cluster's nodes")
-parser.add_argument('--remote', nargs='+', metavar="HOST", default=list(), help="one or more remote ip/dns to hunt")
-parser.add_argument('--active', action="store_true", help="enables active hunting")
-parser.add_argument('--log', type=str, metavar="LOGLEVEL", default='INFO', help="set log level, options are: debug, info, warn, none")
-parser.add_argument('--report', type=str, default='plain', help="set report type, options are: plain, yaml")
-parser.add_argument('--statistics', action="store_true", help="set hunting statistics")
-
-config = parser.parse_args()
-
-import tests
-
-def main():
-    exit(pytest.main(['.']))
-
-
-if __name__ == '__main__':
-    main()

setup.cfg

@@ -1,3 +1,60 @@
+[metadata]
+name = kube-hunter
+description = Kubernetes security weaknesses hunter for humans
+long_description = file: README.md
+long_description_content_type = text/markdown
+author = Aqua Security
+author_email = support@aquasec.com
+url = https://github.com/aquasecurity/kube-hunter
+keywords =
+    aquasec
+    hunter
+    kubernetes
+    k8s
+    security
+license_file = LICENSE
+classifiers =
+    Development Status :: 4 - Beta
+    Environment :: Console
+    License :: OSI Approved :: Apache Software License
+    Natural Language :: English
+    Operating System :: OS Independent
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3 :: Only
+    Topic :: Security
+
+[options]
+zip_safe = False
+packages = find:
+install_requires =
+    netaddr
+    netifaces
+    scapy>=2.4.3
+    requests
+    PrettyTable
+    urllib3>=1.24.3
+    ruamel.yaml
+    future
+    packaging
+    dataclasses
+    pluggy
+setup_requires =
+    setuptools>=30.3.0
+    setuptools_scm
+test_requires =
+    pytest>=2.9.1
+    coverage<5.0
+    pytest-cov
+    requests-mock
+python_requires = >=3.6
+
+[options.entry_points]
+console_scripts =
+    kube-hunter = kube_hunter.__main__:main
+
 [aliases]
 test=pytest
 
@@ -5,7 +62,7 @@ test=pytest
 [tool:pytest]
 minversion                                        = 2.9.1
 norecursedirs                                     = .venv .vscode
-addopts                                           = --cov=src
+addopts                                           = --cov=kube_hunter
 testpaths                                         = tests
 console_output_style                              = progress
 python_classes                                    = Test*
@@ -31,3 +88,10 @@ exclude_lines =
     # Don't complain if non-runnable code isn't run:
     if 0:
     if __name__ == .__main__.:
+    # Don't complain about log messages not being tested
+    logger\.
+    logging\.
+
+# Files to exclude from consideration
+omit =
+    kube_hunter/__main__.py

setup.py

@@ -0,0 +1,63 @@
+from configparser import ConfigParser
+from pkg_resources import parse_requirements
+from subprocess import check_call
+from typing import Any, List
+from setuptools import setup, Command
+
+
+class ListDependenciesCommand(Command):
+    """A custom command to list dependencies"""
+
+    description = "list package dependencies"
+    user_options: List[Any] = []
+
+    def initialize_options(self):
+        pass
+
+    def finalize_options(self):
+        pass
+
+    def run(self):
+        cfg = ConfigParser()
+        cfg.read("setup.cfg")
+        requirements = cfg["options"]["install_requires"]
+        print(requirements)
+
+
+class PyInstallerCommand(Command):
+    """A custom command to run PyInstaller to build standalone executable."""
+
+    description = "run PyInstaller on kube-hunter entrypoint"
+    user_options: List[Any] = []
+
+    def initialize_options(self):
+        pass
+
+    def finalize_options(self):
+        pass
+
+    def run(self):
+        cfg = ConfigParser()
+        cfg.read("setup.cfg")
+        command = [
+            "pyinstaller",
+            "--additional-hooks-dir",
+            "pyinstaller_hooks",
+            "--clean",
+            "--onefile",
+            "--name",
+            "kube-hunter",
+        ]
+        setup_cfg = cfg["options"]["install_requires"]
+        requirements = parse_requirements(setup_cfg)
+        for r in requirements:
+            command.extend(["--hidden-import", r.key])
+        command.append("kube_hunter/__main__.py")
+        print(" ".join(command))
+        check_call(command)
+
+
+setup(
+    use_scm_version={"fallback_version": "noversion"},
+    cmdclass={"dependencies": ListDependenciesCommand, "pyinstaller": PyInstallerCommand},
+)

src/__init__.py

@@ -1,2 +0,0 @@
-from . import core
-from . import modules

src/core/events/__init__.py

@@ -1,2 +0,0 @@
-from .handler import *
-from . import types

src/core/events/types/__init__.py

@@ -1,10 +0,0 @@
-from os.path import dirname, basename, isfile
-import glob
-
-from .common import *
-
-# dynamically importing all modules in folder
-files = glob.glob(dirname(__file__)+"/*.py")
-for module_name in (basename(f)[:-3] for f in files if isfile(f) and not f.endswith('__init__.py')):
-    if module_name != "handler":
-        exec('from .{} import *'.format(module_name))

src/modules/discovery/__init__.py

@@ -1,8 +0,0 @@
-from os.path import dirname, basename, isfile
-import glob
-
-# dynamically importing all modules in folder
-files = glob.glob(dirname(__file__)+"/*.py")
-for module_name in (basename(f)[:-3] for f in files if isfile(f) and not f.endswith('__init__.py')):
-    if not module_name.startswith('test_'):
-        exec('from .{} import *'.format(module_name))

src/modules/discovery/dashboard.py

@@ -1,34 +0,0 @@
-import json
-import logging
-
-import requests
-
-from ...core.events import handler
-from ...core.events.types import Event, OpenPortEvent, Service
-from ...core.types import Discovery
-
-
-class KubeDashboardEvent(Service, Event):
-    """A web-based Kubernetes user interface. allows easy usage with operations on the cluster"""
-    def __init__(self, **kargs):
-        Service.__init__(self, name="Kubernetes Dashboard", **kargs)     
-
-@handler.subscribe(OpenPortEvent, predicate=lambda x: x.port == 30000)
-class KubeDashboard(Discovery):
-    """K8s Dashboard Discovery
-    Checks for the existence of a Dashboard
-    """
-    def __init__(self, event):
-        self.event = event
-
-    @property
-    def secure(self):
-        logging.debug("Attempting to discover an Api server to access dashboard")
-        r = requests.get("http://{}:{}/api/v1/service/default".format(self.event.host, self.event.port))
-        if "listMeta" in r.text and len(json.loads(r.text)["errors"]) == 0:
-            return False
-        return True
-
-    def execute(self):
-        if not self.secure:
-            self.publish_event(KubeDashboardEvent())

src/modules/discovery/hosts.py

@@ -1,192 +0,0 @@
-import os
-import json
-import logging
-import socket
-import sys
-import time
-from enum import Enum
-
-import requests
-from netaddr import IPNetwork, IPAddress
-
-from __main__ import config
-from netifaces import AF_INET, ifaddresses, interfaces
-
-from ...core.events import handler
-from ...core.events.types import Event, NewHostEvent, Vulnerability
-from ...core.types import Discovery, InformationDisclosure, Azure
-
-class RunningAsPodEvent(Event):
-    def __init__(self):
-        self.name = 'Running from within a pod'
-        self.auth_token = self.get_service_account_file("token")
-        self.client_cert = self.get_service_account_file("ca.crt")
-        self.namespace = self.get_service_account_file("namespace")
-        self.kubeservicehost = os.environ.get("KUBERNETES_SERVICE_HOST", None)
-
-    # Event's logical location to be used mainly for reports.
-    def location(self):
-        location = "Local to Pod"
-        if 'HOSTNAME' in os.environ:
-            location += "(" + os.environ['HOSTNAME'] + ")"
-        
-        return location
-
-    def get_service_account_file(self, file):
-        try:
-            with open("/var/run/secrets/kubernetes.io/serviceaccount/{file}".format(file=file)) as f:
-                return f.read()
-        except IOError:
-            pass
-
-class AzureMetadataApi(Vulnerability, Event):
-    """Access to the Azure Metadata API exposes information about the machines associated with the cluster"""
-    def __init__(self, cidr):
-        Vulnerability.__init__(self, Azure, "Azure Metadata Exposure", category=InformationDisclosure, vid="KHV003")
-        self.cidr = cidr
-        self.evidence = "cidr: {}".format(cidr)
-
-class HostScanEvent(Event):
-    def __init__(self, pod=False, active=False, predefined_hosts=list()):
-        self.active = active # flag to specify whether to get actual data from vulnerabilities
-        self.predefined_hosts = predefined_hosts
-
-class HostDiscoveryHelpers:
-    @staticmethod
-    def get_cloud(host):
-        try:
-            logging.debug("Checking whether the cluster is deployed on azure's cloud")
-            # azurespeed.com provide their API via HTTP only; the service can be queried with 
-            # HTTPS, but doesn't show a proper certificate. Since no encryption is worse then
-            # any encryption, we go with the verify=false option for the time being. At least
-            # this prevents leaking internal IP addresses to passive eavesdropping.
-            # TODO: find a more secure service to detect cloud IPs
-            metadata = requests.get("https://www.azurespeed.com/api/region?ipOrUrl={ip}".format(ip=host), verify=False).text
-        except requests.ConnectionError as e:
-            logging.info("- unable to check cloud: {0}".format(e))
-            return
-        if "cloud" in metadata:
-            return json.loads(metadata)["cloud"]
-
-    # generator, generating a subnet by given a cidr
-    @staticmethod
-    def generate_subnet(ip, sn="24"):
-        logging.debug("HostDiscoveryHelpers.generate_subnet {0}/{1}".format(ip, sn))
-        subnet = IPNetwork('{ip}/{sn}'.format(ip=ip, sn=sn))
-        for ip in IPNetwork(subnet):
-            logging.debug("HostDiscoveryHelpers.generate_subnet yielding {0}".format(ip))
-            yield ip
-
-
-@handler.subscribe(RunningAsPodEvent)
-class FromPodHostDiscovery(Discovery):
-    """Host Discovery when running as pod
-    Generates ip adresses to scan, based on cluster/scan type
-    """
-    def __init__(self, event):
-        self.event = event
-
-    def execute(self):
-        # Scan any hosts that the user specified
-        if config.remote or config.cidr:
-            self.publish_event(HostScanEvent())
-        else:
-            # Discover cluster subnets, we'll scan all these hosts 
-            if self.is_azure_pod():
-                subnets, cloud = self.azure_metadata_discovery()
-            else:
-                subnets, cloud = self.traceroute_discovery()
-
-            should_scan_apiserver = False
-            if self.event.kubeservicehost:
-                should_scan_apiserver = True
-            for subnet in subnets:
-                if self.event.kubeservicehost and self.event.kubeservicehost in IPNetwork("{}/{}".format(subnet[0], subnet[1])):
-                    should_scan_apiserver = False
-                logging.debug("From pod scanning subnet {0}/{1}".format(subnet[0], subnet[1]))
-                for ip in HostDiscoveryHelpers.generate_subnet(ip=subnet[0], sn=subnet[1]):
-                    self.publish_event(NewHostEvent(host=ip, cloud=cloud))
-            if should_scan_apiserver:
-                self.publish_event(NewHostEvent(host=IPAddress(self.event.kubeservicehost), cloud=cloud))
-
-            
-    def is_azure_pod(self):
-        try:
-            logging.debug("From pod attempting to access Azure Metadata API")
-            if requests.get("http://169.254.169.254/metadata/instance?api-version=2017-08-01", headers={"Metadata":"true"}, timeout=5).status_code == 200:
-                return True
-        except requests.exceptions.ConnectionError:
-            return False
-
-   # for pod scanning
-    def traceroute_discovery(self):
-        external_ip = requests.get("http://canhazip.com").text # getting external ip, to determine if cloud cluster
-        from scapy.all import ICMP, IP, Ether, srp1
-
-        node_internal_ip = srp1(Ether() / IP(dst="google.com" , ttl=1) / ICMP(), verbose=0)[IP].src
-        return [ [node_internal_ip,"24"], ], external_ip
-
-    # querying azure's interface metadata api | works only from a pod
-    def azure_metadata_discovery(self):
-        logging.debug("From pod attempting to access azure's metadata")
-        machine_metadata = json.loads(requests.get("http://169.254.169.254/metadata/instance?api-version=2017-08-01", headers={"Metadata":"true"}).text)
-        address, subnet = "", ""
-        subnets = list()
-        for interface in machine_metadata["network"]["interface"]:
-            address, subnet = interface["ipv4"]["subnet"][0]["address"], interface["ipv4"]["subnet"][0]["prefix"]
-            logging.debug("From pod discovered subnet {0}/{1}".format(address, subnet if not config.quick else "24"))
-            subnets.append([address,subnet if not config.quick else "24"])
-
-            self.publish_event(AzureMetadataApi(cidr="{}/{}".format(address, subnet)))
-
-        return subnets, "Azure"
-
-@handler.subscribe(HostScanEvent)
-class HostDiscovery(Discovery):
-    """Host Discovery
-    Generates ip adresses to scan, based on cluster/scan type
-    """
-    def __init__(self, event):
-        self.event = event
-
-    def execute(self):
-        if config.cidr:
-            try:
-                ip, sn = config.cidr.split('/')
-            except ValueError as e:
-                logging.error("unable to parse cidr: {0}".format(e))
-                return
-            cloud = HostDiscoveryHelpers.get_cloud(ip)
-            for ip in HostDiscoveryHelpers.generate_subnet(ip, sn=sn):
-                self.publish_event(NewHostEvent(host=ip, cloud=cloud))                
-        elif config.interface:
-            self.scan_interfaces()
-        elif len(config.remote) > 0:
-            for host in config.remote:
-                self.publish_event(NewHostEvent(host=host, cloud=HostDiscoveryHelpers.get_cloud(host)))
- 
-    # for normal scanning
-    def scan_interfaces(self):
-        try:
-            logging.debug("HostDiscovery hunter attempting to get external IP address")
-            external_ip = requests.get("http://canhazip.com").text # getting external ip, to determine if cloud cluster
-        except requests.ConnectionError as e:
-            logging.debug("unable to determine local IP address: {0}".format(e))
-            logging.info("~ default to 127.0.0.1")
-            external_ip = "127.0.0.1"
-        cloud = HostDiscoveryHelpers.get_cloud(external_ip)
-        for ip in self.generate_interfaces_subnet():
-            handler.publish_event(NewHostEvent(host=ip, cloud=cloud))
-
-    # generate all subnets from all internal network interfaces
-    def generate_interfaces_subnet(self, sn='24'):
-        for ifaceName in interfaces():
-            for ip in [i['addr'] for i in ifaddresses(ifaceName).setdefault(AF_INET, [])]:
-                if not self.event.localhost and InterfaceTypes.LOCALHOST.value in ip.__str__():
-                    continue
-                for ip in HostDiscoveryHelpers.generate_subnet(ip, sn):
-                    yield ip
-                    
-# for comparing prefixes
-class InterfaceTypes(Enum):
-    LOCALHOST = "127"

src/modules/discovery/proxy.py

@@ -1,35 +0,0 @@
-import logging
-import requests
-from collections import defaultdict
-from ...core.types import Discovery
-
-from requests import get
-
-from ...core.events import handler
-from ...core.events.types import Service, Event, OpenPortEvent
-
-class KubeProxyEvent(Event, Service):
-    """proxies from a localhost address to the Kubernetes apiserver"""
-    def __init__(self):
-        Service.__init__(self, name="Kubernetes Proxy") 
-
-@handler.subscribe(OpenPortEvent, predicate=lambda x: x.port == 8001)
-class KubeProxy(Discovery):
-    """Proxy Discovery
-    Checks for the existence of a an open Proxy service
-    """
-    def __init__(self, event):
-        self.event = event
-        self.host = event.host
-        self.port = event.port or 8001
-
-    @property
-    def accesible(self):
-        logging.debug("Attempting to discover a proxy service")
-        r = requests.get("http://{host}:{port}/api/v1".format(host=self.host, port=self.port))
-        if r.status_code == 200 and "APIResourceList" in r.text:
-            return True
-
-    def execute(self):
-        if self.accesible:
-            self.publish_event(KubeProxyEvent())        

src/modules/hunting/__init__.py

@@ -1,7 +0,0 @@
-from os.path import dirname, basename, isfile
-import glob
-
-# dynamically importing all modules in folder
-files = glob.glob(dirname(__file__)+"/*.py")
-for module_name in (basename(f)[:-3] for f in files if isfile(f) and not f.endswith('__init__.py')):
-    exec('from .{} import *'.format(module_name))

src/modules/hunting/aks.py

@@ -1,77 +0,0 @@
-import json
-import logging
-
-import requests
-
-from .kubelet import ExposedRunHandler
-
-from ...core.events import handler
-from ...core.events.types import Event, Vulnerability
-from ...core.types import Hunter, ActiveHunter, IdentityTheft, Azure
-
-
-class AzureSpnExposure(Vulnerability, Event):
-    """The SPN is exposed, potentially allowing an attacker to gain access to the Azure subscription"""
-    def __init__(self, container):
-        Vulnerability.__init__(self, Azure, "Azure SPN Exposure", category=IdentityTheft, vid="KHV004")
-        self.container = container
-
-@handler.subscribe(ExposedRunHandler, predicate=lambda x: x.cloud=="Azure")
-class AzureSpnHunter(Hunter):
-    """AKS Hunting
-    Hunting Azure cluster deployments using specific known configurations
-    """
-    def __init__(self, event):
-        self.event = event
-        self.base_url = "https://{}:{}".format(self.event.host, self.event.port)
-        
-    # getting a container that has access to the azure.json file
-    def get_key_container(self):
-        logging.debug("Passive Hunter is attempting to find container with access to azure.json file")
-        raw_pods = requests.get(self.base_url + "/pods", verify=False).text
-        if "items" in raw_pods:
-            pods_data = json.loads(raw_pods)["items"]
-            for pod_data in pods_data:
-                for container in pod_data["spec"]["containers"]:
-                    for mount in container["volumeMounts"]:
-                        path = mount["mountPath"]
-                        if '/etc/kubernetes/azure.json'.startswith(path):
-                            return {
-                                "name": container["name"],                                                        
-                                "pod": pod_data["metadata"]["name"],
-                                "namespace": pod_data["metadata"]["namespace"]
-                            }
-
-    def execute(self):
-        container = self.get_key_container()
-        if container:
-            self.publish_event(AzureSpnExposure(container=container))
-
-""" Active Hunting """
-@handler.subscribe(AzureSpnExposure)
-class ProveAzureSpnExposure(ActiveHunter):
-    """Azure SPN Hunter
-    Gets the azure subscription file on the host by executing inside a container 
-    """
-    def __init__(self, event):
-        self.event = event
-        self.base_url = "https://{}:{}".format(self.event.host, self.event.port)
-
-    def run(self, command, container):
-        run_url = "{base}/run/{pod_namespace}/{pod_id}/{container_name}".format(
-            base=self.base_url,
-            pod_namespace=container["namespace"],
-            pod_id=container["pod"],
-            container_name=container["name"]
-        )
-        return requests.post(run_url, verify=False, params={'cmd': command}).text
-
-    def execute(self):
-        raw_output = self.run("cat /etc/kubernetes/azure.json", container=self.event.container)
-        if "subscriptionId" in raw_output:
-            subscription = json.loads(raw_output)
-            self.event.subscriptionId = subscription["subscriptionId"]
-            self.event.aadClientId = subscription["aadClientId"]
-            self.event.aadClientSecret = subscription["aadClientSecret"]
-            self.event.tenantId = subscription["tenantId"]     
-            self.event.evidence = "subscription: {}".format(self.event.subscriptionId)

src/modules/hunting/apiserver.py

@@ -1,580 +0,0 @@
-import logging
-import json
-import requests
-import uuid
-import copy
-
-from ...core.events import handler
-from ...core.events.types import Vulnerability, Event, K8sVersionDisclosure
-from ..discovery.apiserver import ApiServer
-from ...core.types import Hunter, ActiveHunter, KubernetesCluster
-from ...core.types import RemoteCodeExec, AccessRisk, InformationDisclosure, UnauthenticatedAccess
-
-
-""" Vulnerabilities """
-
-class ServerApiAccess(Vulnerability, Event):
-    """ The API Server port is accessible. Depending on your RBAC settings this could expose access to or control of your cluster. """
- 
-    def __init__(self, evidence, using_token):
-        if using_token:
-            name = "Access to API using service account token"
-            category = InformationDisclosure
-        else:
-            name = "Unauthenticated access to API"
-            category = UnauthenticatedAccess
-        Vulnerability.__init__(self, KubernetesCluster, name=name, category=category, vid="KHV005")
-        self.evidence = evidence
-
-class ServerApiHTTPAccess(Vulnerability, Event):
-    """ The API Server port is accessible over HTTP, and therefore unencrypted. Depending on your RBAC settings this could expose access to or control of your cluster. """
- 
-    def __init__(self, evidence):
-        name = "Insecure (HTTP) access to API"
-        category = UnauthenticatedAccess
-        Vulnerability.__init__(self, KubernetesCluster, name=name, category=category, vid="KHV006")
-        self.evidence = evidence
-
-class ApiInfoDisclosure(Vulnerability, Event):
-    def __init__(self, evidence, using_token, name):
-        if using_token: 
-            name +=" using service account token"
-        else:
-            name +=" as anonymous user"
-        Vulnerability.__init__(self, KubernetesCluster, name=name, category=InformationDisclosure, vid="KHV007")
-        self.evidence = evidence
-
-class ListPodsAndNamespaces(ApiInfoDisclosure):
-    """ Accessing pods might give an attacker valuable information"""
-
-    def __init__(self, evidence, using_token):
-        ApiInfoDisclosure.__init__(self, evidence, using_token, "Listing pods")
-
-
-class ListNamespaces(ApiInfoDisclosure):
-    """ Accessing namespaces might give an attacker valuable information """
-
-    def __init__(self, evidence, using_token):
-        ApiInfoDisclosure.__init__(self, evidence, using_token, "Listing namespaces")
-
-
-class ListRoles(ApiInfoDisclosure):
-    """ Accessing roles might give an attacker valuable information """
-
-    def __init__(self, evidence, using_token):
-        ApiInfoDisclosure.__init__(self, evidence, using_token, "Listing roles")
-
-
-class ListClusterRoles(ApiInfoDisclosure):
-    """ Accessing cluster roles might give an attacker valuable information """
-
-    def __init__(self, evidence, using_token):
-        ApiInfoDisclosure.__init__(self, evidence, using_token, "Listing cluster roles")
-
-
-class CreateANamespace(Vulnerability, Event):
-
-    """ Creating a namespace might give an attacker an area with default (exploitable) permissions to run pods in.
-    """
-    def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Created a namespace",
-                               category=AccessRisk)
-        self.evidence = evidence
-
-
-class DeleteANamespace(Vulnerability, Event):
-
-    """ Deleting a namespace might give an attacker the option to affect application behavior """
-    def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Delete a namespace",
-                               category=AccessRisk)
-        self.evidence = evidence
-
-
-class CreateARole(Vulnerability, Event):
-    """ Creating a role might give an attacker the option to harm the normal behavior of newly created pods
-     within the specified namespaces.
-    """
-
-    def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Created a role",
-                               category=AccessRisk)
-        self.evidence = evidence
-
-
-class CreateAClusterRole(Vulnerability, Event):
-    """ Creating a cluster role might give an attacker the option to harm the normal behavior of newly created pods
-     across the whole cluster
-    """
-
-    def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Created a cluster role",
-                               category=AccessRisk)
-        self.evidence = evidence
-
-
-class PatchARole(Vulnerability, Event):
-    """ Patching a role might give an attacker the option to create new pods with custom roles within the
-    specific role's namespace scope
-    """
-
-    def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Patched a role",
-                               category=AccessRisk)
-        self.evidence = evidence
-
-
-class PatchAClusterRole(Vulnerability, Event):
-    """ Patching a cluster role might give an attacker the option to create new pods with custom roles within the whole
-    cluster scope.
-    """
-
-    def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Patched a cluster role",
-                               category=AccessRisk)
-        self.evidence = evidence
-
-
-class DeleteARole(Vulnerability, Event):
-    """ Deleting a role might allow an attacker to affect access to resources in the namespace"""
-
-    def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Deleted a role",
-                               category=AccessRisk)
-        self.evidence = evidence
-
-
-class DeleteAClusterRole(Vulnerability, Event):
-    """ Deleting a cluster role might allow an attacker to affect access to resources in the cluster"""
-
-    def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Deleted a cluster role",
-                               category=AccessRisk)
-        self.evidence = evidence
-
-
-class CreateAPod(Vulnerability, Event):
-    """ Creating a new pod allows an attacker to run custom code"""
-
-    def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Created A Pod",
-                               category=AccessRisk)
-        self.evidence = evidence
-
-
-class CreateAPrivilegedPod(Vulnerability, Event):
-    """ Creating a new PRIVILEGED pod would gain an attacker FULL CONTROL over the cluster"""
-
-    def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Created A PRIVILEGED Pod",
-                               category=AccessRisk)
-        self.evidence = evidence
-
-
-class PatchAPod(Vulnerability, Event):
-    """ Patching a pod allows an attacker to compromise and control it """
-
-    def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Patched A Pod",
-                               category=AccessRisk)
-        self.evidence = evidence
-
-
-class DeleteAPod(Vulnerability, Event):
-    """ Deleting a pod allows an attacker to disturb applications on the cluster """
-
-    def __init__(self, evidence):
-        Vulnerability.__init__(self, KubernetesCluster, name="Deleted A Pod",
-                               category=AccessRisk)
-        self.evidence = evidence
-
-
-class ApiServerPassiveHunterFinished(Event):
-    def __init__(self, namespaces):
-        self.namespaces = namespaces
-
-
-# This Hunter checks what happens if we try to access the API Server without a service account token
-# If we have a service account token we'll also trigger AccessApiServerWithToken below
-@handler.subscribe(ApiServer)
-class AccessApiServer(Hunter):
-    """ API Server Hunter
-    Checks if API server is accessible
-    """
-
-    def __init__(self, event):
-        self.event = event
-        self.path = "{}://{}:{}".format(self.event.protocol, self.event.host, self.event.port)
-        self.headers = {}
-        self.with_token = False
-
-    def access_api_server(self):
-        logging.debug('Passive Hunter is attempting to access the API at {}'.format(self.path))
-        try:
-            r = requests.get("{path}/api".format(path=self.path), headers=self.headers, verify=False)
-            if r.status_code == 200 and r.content != '':
-                return r.content
-        except requests.exceptions.ConnectionError:
-            pass
-        return False
-
-    def get_items(self, path):
-        try: 
-            items = []
-            r = requests.get(path, headers=self.headers, verify=False)
-            if r.status_code ==200:
-                resp = json.loads(r.content)
-                for item in resp["items"]:
-                    items.append(item["metadata"]["name"])
-                return items
-        except (requests.exceptions.ConnectionError, KeyError):
-            pass
-        
-        return None
-
-    def get_pods(self, namespace=None):
-        pods = []
-        try:
-            if namespace is None:
-                r = requests.get("{path}/api/v1/pods".format(path=self.path),
-                               headers=self.headers, verify=False)
-            else:
-                r = requests.get("{path}/api/v1/namespaces/{namespace}/pods".format(path=self.path),
-                               headers=self.headers, verify=False)
-            if r.status_code == 200:
-                resp = json.loads(r.content)
-                for item in resp["items"]:
-                    name = item["metadata"]["name"].encode('ascii', 'ignore')
-                    namespace = item["metadata"]["namespace"].encode('ascii', 'ignore')
-                    pods.append({'name': name, 'namespace': namespace})
-
-                return pods
-        except (requests.exceptions.ConnectionError, KeyError):
-            pass
-        return None
-
-    def execute(self):
-        api = self.access_api_server()
-        if api:
-            if self.event.protocol == "http":
-                self.publish_event(ServerApiHTTPAccess(api))
-            else:
-                self.publish_event(ServerApiAccess(api, self.with_token))
-
-        namespaces = self.get_items("{path}/api/v1/namespaces".format(path=self.path))
-        if namespaces:
-            self.publish_event(ListNamespaces(namespaces, self.with_token))
-
-        roles = self.get_items("{path}/apis/rbac.authorization.k8s.io/v1/roles".format(path=self.path))
-        if roles:
-            self.publish_event(ListRoles(roles, self.with_token))
-
-        cluster_roles = self.get_items("{path}/apis/rbac.authorization.k8s.io/v1/clusterroles".format(path=self.path))
-        if cluster_roles:
-            self.publish_event(ListClusterRoles(cluster_roles, self.with_token))
-
-        pods = self.get_pods()
-        if pods:
-            self.publish_event(ListPodsAndNamespaces(pods, self.with_token))
-
-        # If we have a service account token, this event should get triggered twice - once with and once without
-        # the token
-        self.publish_event(ApiServerPassiveHunterFinished(namespaces))
-
-@handler.subscribe(ApiServer, predicate=lambda x: x.auth_token)
-class AccessApiServerWithToken(AccessApiServer):
-    """ API Server Hunter
-    Accessing the API server using the service account token obtained from a compromised pod
-    """
-
-    def __init__(self, event):
-        super(AccessApiServerWithToken, self).__init__(event)
-        assert self.event.auth_token != ''
-        self.headers = {'Authorization': 'Bearer ' + self.event.auth_token}
-        self.category = InformationDisclosure
-        self.with_token = True
-
-
-# Active Hunter
-@handler.subscribe(ApiServerPassiveHunterFinished)
-class AccessApiServerActive(ActiveHunter):
-    """API server hunter
-    Accessing the api server might grant an attacker full control over the cluster
-    """
-
-    def __init__(self, event):
-        self.event = event
-        self.path = "{}://{}:{}".format(self.event.protocol, self.event.host, self.event.port)
-
-    def create_item(self, path, name, data):
-        headers = {
-            'Content-Type': 'application/json'
-        }
-        if self.event.auth_token:
-            headers['Authorization'] = 'Bearer {token}'.format(token=self.event.auth_token)
-
-        try:
-            res = requests.post(path.format(name=name), verify=False, data=data, headers=headers)
-            if res.status_code in [200, 201, 202]: 
-                parsed_content = json.loads(res.content)
-                return parsed_content['metadata']['name']
-        except (requests.exceptions.ConnectionError, KeyError):
-            pass
-        return None
-
-    def patch_item(self, path, data):
-        headers = {
-            'Content-Type': 'application/json-patch+json'
-        }
-        if self.event.auth_token:
-            headers['Authorization'] = 'Bearer {token}'.format(token=self.event.auth_token)
-        try:
-            res = requests.patch(path, headers=headers, verify=False, data=data)
-            if res.status_code not in [200, 201, 202]: 
-                return None
-            parsed_content = json.loads(res.content)
-            # TODO is there a patch timestamp we could use?
-            return parsed_content['metadata']['namespace']
-        except (requests.exceptions.ConnectionError, KeyError):
-            pass
-        return None
-
-    def delete_item(self, path):
-        headers = {}
-        if self.event.auth_token:
-            headers['Authorization'] = 'Bearer {token}'.format(token=self.event.auth_token)
-        try:
-            res = requests.delete(path, headers=headers, verify=False)
-            if res.status_code in [200, 201, 202]: 
-                parsed_content = json.loads(res.content)
-                return parsed_content['metadata']['deletionTimestamp']
-        except (requests.exceptions.ConnectionError, KeyError):
-            pass
-        return None
-
-    def create_a_pod(self, namespace, is_privileged):
-        privileged_value = ',"securityContext":{"privileged":true}' if is_privileged else ''
-        random_name = (str(uuid.uuid4()))[0:5]
-        json_pod = \
-            """
-                {{"apiVersion": "v1",
-                "kind": "Pod",
-                "metadata": {{
-                    "name": "{random_name}"
-                }},
-                "spec": {{
-                    "containers": [
-                        {{
-                            "name": "{random_name}",
-                            "image": "nginx:1.7.9",
-                            "ports": [
-                                {{
-                                    "containerPort": 80
-                                }}
-                            ]
-                            {is_privileged_flag}
-                        }}
-                    ]
-                }}
-            }}
-            """.format(random_name=random_name, is_privileged_flag=privileged_value)
-        return self.create_item(path="{path}/api/v1/namespaces/{namespace}/pods".format(
-                                path=self.path, namespace=namespace), name=random_name, data=json_pod)
-
-    def delete_a_pod(self, namespace, pod_name):
-        delete_timestamp = self.delete_item("{path}/api/v1/namespaces/{namespace}/pods/{name}".format(
-                                          path=self.path, name=pod_name, namespace=namespace))
-        if delete_timestamp is None:
-            logging.error("Created pod {name} in namespace {namespace} but unable to delete it".format(name=pod_name, namespace=namespace))
-        return delete_timestamp
-
-    def patch_a_pod(self, namespace, pod_name):
-        data = '[{ "op": "add", "path": "/hello", "value": ["world"] }]'
-        return self.patch_item(path="{path}/api/v1/namespaces/{namespace}/pods/{name}".format(
-                                 path=self.path, namespace=namespace, name=pod_name),
-                                 data=data)
-
-    def create_namespace(self):
-        random_name = (str(uuid.uuid4()))[0:5]
-        json = '{{"kind":"Namespace","apiVersion":"v1","metadata":{{"name":"{random_str}","labels":{{"name":"{random_str}"}}}}}}'.format(random_str=random_name)
-        return self.create_item(path="{path}/api/v1/namespaces".format(path=self.path), name=random_name, data=json)
-        
-    def delete_namespace(self, namespace):
-        delete_timestamp = self.delete_item("{path}/api/v1/namespaces/{name}".format(path=self.path, name=namespace))
-        if delete_timestamp is None:
-            logging.error("Created namespace {namespace} but unable to delete it".format(namespace=namespace))
-        return delete_timestamp
-
-    def create_a_role(self, namespace):
-        name = (str(uuid.uuid4()))[0:5]
-        role = """{{
-                          "kind": "Role",
-                          "apiVersion": "rbac.authorization.k8s.io/v1",
-                          "metadata": {{
-                            "namespace": "{namespace}",
-                            "name": "{random_str}"
-                          }},
-                          "rules": [
-                            {{
-                              "apiGroups": [
-                                ""
-                              ],
-                              "resources": [
-                                "pods"
-                              ],
-                              "verbs": [
-                                "get",
-                                "watch",
-                                "list"
-                              ]
-                            }}
-                          ]
-                        }}""".format(random_str=name, namespace=namespace)
-        return self.create_item(path="{path}/apis/rbac.authorization.k8s.io/v1/namespaces/{namespace}/roles".format(
-                                path=self.path, namespace=namespace), name=name, data=role)
-        
-    def create_a_cluster_role(self):
-        name = (str(uuid.uuid4()))[0:5]
-        cluster_role = """{{
-                      "kind": "ClusterRole",
-                      "apiVersion": "rbac.authorization.k8s.io/v1",
-                      "metadata": {{
-                        "name": "{random_str}"
-                      }},
-                      "rules": [
-                        {{
-                          "apiGroups": [
-                            ""
-                          ],
-                          "resources": [
-                            "pods"
-                          ],
-                          "verbs": [
-                            "get",
-                            "watch",
-                            "list"
-                          ]
-                        }}
-                      ]
-                    }}""".format(random_str=name)
-        return self.create_item(path="{path}/apis/rbac.authorization.k8s.io/v1/clusterroles".format(
-                               path=self.path), name=name, data=cluster_role)
-
-    def delete_a_role(self, namespace, name):
-        delete_timestamp = self.delete_item("{path}/apis/rbac.authorization.k8s.io/v1/namespaces/{namespace}/roles/{role}".format(
-            path=self.path, name=namespace, role=name))
-        if delete_timestamp is None:
-            logging.error("Created role {name} in namespace {namespace} but unable to delete it".format(name=name, namespace=namespace))
-        return delete_timestamp
-
-    def delete_a_cluster_role(self, name):
-        delete_timestamp = self.delete_item("{path}/apis/rbac.authorization.k8s.io/v1/clusterroles/{role}".format(
-            path=self.path, role=name))
-        if delete_timestamp is None:
-            logging.error("Created cluster role {name} but unable to delete it".format(name=name))
-        return delete_timestamp
-
-    def patch_a_role(self, namespace, role):
-        data = '[{ "op": "add", "path": "/hello", "value": ["world"] }]'
-        return self.patch_item(path="{path}/apis/rbac.authorization.k8s.io/v1/namespaces/{namespace}/roles/{name}".format(
-                                path=self.path, name=role, namespace=namespace),
-                                data=data)
-
-    def patch_a_cluster_role(self, cluster_role):
-        data = '[{ "op": "add", "path": "/hello", "value": ["world"] }]'
-        return self.patch_item(path="{path}/apis/rbac.authorization.k8s.io/v1/clusterroles/{name}".format(
-                                path=self.path, name=cluster_role),
-                                data=data)
-
-    def execute(self):
-        # Try creating cluster-wide objects
-        namespace = self.create_namespace()
-        if namespace:
-            self.publish_event(CreateANamespace('new namespace name: {name}'.format(name=namespace)))
-            delete_timestamp = self.delete_namespace(namespace)
-            if delete_timestamp:
-                self.publish_event(DeleteANamespace(delete_timestamp))
-
-        cluster_role = self.create_a_cluster_role()
-        if cluster_role:
-            self.publish_event(CreateAClusterRole('Cluster role name:  {name}'.format(name=cluster_role)))
-
-            patch_evidence = self.patch_a_cluster_role(cluster_role)
-            if patch_evidence:
-                self.publish_event(PatchAClusterRole('Patched Cluster Role Name: {name}  Patch evidence: {patch_evidence}'.format(
-                    name=cluster_role, patch_evidence=patch_evidence)))
-
-            delete_timestamp = self.delete_a_cluster_role(cluster_role)
-            if delete_timestamp:
-                self.publish_event(DeleteAClusterRole('Cluster role {name} deletion time {delete_timestamp}'.format(
-                                                        name=cluster_role, delete_timestamp=delete_timestamp)))
-
-        #  Try attacking all the namespaces we know about
-        if self.event.namespaces:
-            for namespace in self.event.namespaces:
-                # Try creating and deleting a privileged pod
-                pod_name = self.create_a_pod(namespace, True)
-                if pod_name:
-                    self.publish_event(CreateAPrivilegedPod('Pod Name: {pod_name}  Namespace: {namespace}'.format(
-                                                    pod_name=pod_name, namespace=namespace)))
-                    delete_time = self.delete_a_pod(namespace, pod_name)
-                    if delete_time:
-                        self.publish_event(DeleteAPod('Pod Name: {pod_name}  deletion time: {delete_time}'.format(
-                                                    pod_name=pod_name, delete_evidence=delete_time)))
-                
-                # Try creating, patching and deleting an unprivileged pod
-                pod_name = self.create_a_pod(namespace, False)
-                if pod_name:
-                    self.publish_event(CreateAPod('Pod Name: {pod_name}  Namespace: {namespace}'.format(
-                                                    pod_name=pod_name, namespace=namespace)))
-
-                    patch_evidence = self.patch_a_pod(namespace, pod_name)
-                    if patch_evidence:
-                        self.publish_event(PatchAPod('Pod Name: {pod_name}  Namespace: {namespace}  Patch evidence: {patch_evidence}'.format(
-                                                        pod_name=pod_name, namespace=namespace,
-                                                        patch_evidence=patch_evidence)))
-
-                    delete_time = self.delete_a_pod(namespace, pod_name)
-                    if delete_time:
-                        self.publish_event(DeleteAPod('Pod Name: {pod_name}  Namespace: {namespace}  Delete time: {delete_time}'.format(
-                                                        pod_name=pod_name, namespace=namespace, delete_time=delete_time)))
-
-                role = self.create_a_role(namespace)
-                if role:
-                    self.publish_event(CreateARole('Role name:  {name}'.format(name=role)))
-
-                    patch_evidence = self.patch_a_role(namespace, role)
-                    if patch_evidence:
-                        self.publish_event(PatchARole('Patched Role Name: {name}  Namespace: {namespace}  Patch evidence: {patch_evidence}'.format(
-                            name=role, namespace=namespace, patch_evidence=patch_evidence)))
-
-                    delete_time = self.delete_a_role(namespace, role)
-                    if delete_time:
-                        self.publish_event(DeleteARole('Deleted role: {name}  Namespace: {namespace}  Delete time: {delete_time}'.format(
-                                                        name=role, namespace=namespace, delete_time=delete_time)))
-
-
-            #  Note: we are not binding any role or cluster role because
-            # -- in certain cases it might effect the running pod within the cluster (and we don't want to do that).
-
-@handler.subscribe(ApiServer)
-class ApiVersionHunter(Hunter):
-    """Api Version Hunter
-    Tries to obtain the Api Server's version directly from /version endpoint
-    """
-    def __init__(self, event):
-        self.event = event
-        self.path = "{}://{}:{}".format(self.event.protocol, self.event.host, self.event.port)
-        self.session = requests.Session()
-        self.session.verify = False
-        if self.event.auth_token:
-            self.session.headers.update({"Authorization": "Bearer {}".format(self.event.auth_token)})
-        
-    def execute(self):
-        if self.event.auth_token:
-            logging.debug('Passive Hunter is attempting to access the API server version end point using the pod\'s service account token on {}:{} \t'.format(self.event.host, self.event.port))
-        else:
-            logging.debug('Passive Hunter is attempting to access the API server version end point anonymously')
-        version = json.loads(self.session.get(self.path + "/version").text)["gitVersion"]
-        logging.debug("Discovered version of api server {}".format(version))
-        self.publish_event(K8sVersionDisclosure(version=version, from_endpoint="/version"))

src/modules/hunting/arp.py

@@ -1,51 +0,0 @@
-import logging
-
-from ...core.events import handler
-from ...core.events.types import Event, Vulnerability
-from ...core.types import ActiveHunter, KubernetesCluster, IdentityTheft
-
-from .capabilities import CapNetRawEnabled 
-
-from scapy.all import ARP, IP, ICMP, Ether, sr1, srp
-
-class PossibleArpSpoofing(Vulnerability, Event):
-    """A malicious pod running on the cluster could potentially run an ARP Spoof attack and perform a MITM between pods on the node."""
-    def __init__(self):
-        Vulnerability.__init__(self, KubernetesCluster, "Possible Arp Spoof", category=IdentityTheft,vid="KHV020")
-
-@handler.subscribe(CapNetRawEnabled)
-class ArpSpoofHunter(ActiveHunter):
-    """Arp Spoof Hunter
-    Checks for the possibility of running an ARP spoof attack from within a pod (results are based on the running node)
-    """
-    def __init__(self, event):
-        self.event = event
-
-    def try_getting_mac(self, ip):
-        ans = sr1(ARP(op=1, pdst=ip),timeout=2, verbose=0)  
-        return ans[ARP].hwsrc if ans else None
-
-    def detect_l3_on_host(self, arp_responses):
-        """ returns True for an existence of an L3 network plugin """
-        logging.debug("Attempting to detect L3 network plugin using ARP")
-        unique_macs = list(set(response[ARP].hwsrc for _, response in arp_responses))
-        
-        # if LAN addresses not unique
-        if len(unique_macs) == 1:
-            # if an ip outside the subnets gets a mac address
-            outside_mac = self.try_getting_mac("1.1.1.1")
-            # outside mac is the same as lan macs
-            if outside_mac == unique_macs[0]:
-                return True
-        # only one mac address for whole LAN and outside 
-        return False
-        
-    def execute(self):
-        self_ip = sr1(IP(dst="1.1.1.1", ttl=1), ICMP(), verbose=0)[IP].dst 
-        arp_responses, _ = srp(Ether(dst="ff:ff:ff:ff:ff:ff")/ARP(op=1, pdst="{}/24".format(self_ip)), timeout=3, verbose=0)
-        
-        # arp enabled on cluster and more than one pod on node
-        if len(arp_responses) > 1:
-            # L3 plugin not installed
-            if not self.detect_l3_on_host(arp_responses):
-                self.publish_event(PossibleArpSpoofing())

src/modules/hunting/capabilities.py

@@ -1,38 +0,0 @@
-import socket
-import logging
-
-from ..discovery.hosts import RunningAsPodEvent
-
-from ...core.events import handler
-from ...core.events.types import Event, Vulnerability
-from ...core.types import Hunter, AccessRisk, KubernetesCluster
-
-
-class CapNetRawEnabled(Event, Vulnerability):
-    """CAP_NET_RAW is enabled by default for pods. If an attacker manages to compromise a pod, they could potentially take advantage of this capability to perform network attacks on other pods running on the same node"""
-    def __init__(self):
-        Vulnerability.__init__(self, KubernetesCluster, name="CAP_NET_RAW Enabled", category=AccessRisk)
-    
-
-@handler.subscribe(RunningAsPodEvent)
-class PodCapabilitiesHunter(Hunter):
-    """Pod Capabilities Hunter
-    Checks for default enabled capabilities in a pod 
-    """
-    def __init__(self, event):
-        self.event = event        
-
-    def check_net_raw(self):
-        logging.debug("Passive hunter's trying to open a RAW socket")
-        try:
-            # trying to open a raw socket without CAP_NET_RAW will raise PermissionsError
-            s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_RAW)
-            s.close()
-            logging.debug("Passive hunter's closing RAW socket")
-            return True
-        except PermissionError:
-            logging.debug("CAP_NET_RAW not enabled")
-
-    def execute(self):
-        if self.check_net_raw():
-            self.publish_event(CapNetRawEnabled())

src/modules/hunting/certificates.py

@@ -1,41 +0,0 @@
-from ...core.types import Hunter, KubernetesCluster, InformationDisclosure
-from ...core.events import handler
-from ...core.events.types import Vulnerability, Event, Service
-
-import ssl
-import logging
-import base64
-import re
-
-from socket import socket
-
-email_pattern = re.compile(r"([a-z0-9]+@[a-z0-9]+\.[a-z0-9]+)")
-
-class CertificateEmail(Vulnerability, Event):
-    """Certificate includes an email address"""
-    def __init__(self, email):
-        Vulnerability.__init__(self, KubernetesCluster, "Certificate Includes Email Address", category=InformationDisclosure,khv="KHV021")
-        self.email = email
-        self.evidence = "email: {}".format(self.email)
-
-@handler.subscribe(Service)
-class CertificateDiscovery(Hunter):
-    """Certificate Email Hunting
-    Checks for email addresses in kubernetes ssl certificates
-    """
-    def __init__(self, event):
-        self.event = event
-
-    def execute(self):
-        try:
-            logging.debug("Passive hunter is attempting to get server certificate")
-            addr = (str(self.event.host), self.event.port)
-            cert = ssl.get_server_certificate(addr)
-        except ssl.SSLError:
-            # If the server doesn't offer SSL on this port we won't get a certificate
-            return
-        c = cert.strip(ssl.PEM_HEADER).strip(ssl.PEM_FOOTER)
-        certdata = base64.decodestring(c)
-        emails = re.findall(email_pattern, certdata)
-        for email in emails:
-            self.publish_event( CertificateEmail(email=email) )

src/modules/hunting/dashboard.py

@@ -1,32 +0,0 @@
-import logging
-import json
-from ...core.types import Hunter, RemoteCodeExec, KubernetesCluster
-
-import requests
-
-from ...core.events import handler
-from ...core.events.types import Vulnerability, Event
-from ..discovery.dashboard import KubeDashboardEvent
-
-class DashboardExposed(Vulnerability, Event):
-    """All operations on the cluster are exposed"""
-    def __init__(self, nodes):
-        Vulnerability.__init__(self, KubernetesCluster, "Dashboard Exposed", category=RemoteCodeExec, vid="KHV029")
-        self.evidence = "nodes: {}".format(' '.join(nodes)) if nodes else None
-
-@handler.subscribe(KubeDashboardEvent)
-class KubeDashboard(Hunter):
-    """Dashboard Hunting
-    Hunts open Dashboards, gets the type of nodes in the cluster
-    """
-    def __init__(self, event):
-        self.event = event
-
-    def get_nodes(self):
-        logging.debug("Passive hunter is attempting to get nodes types of the cluster")
-        r = requests.get("http://{}:{}/api/v1/node".format(self.event.host, self.event.port))
-        if r.status_code == 200 and "nodes" in r.text:
-            return list(map(lambda node: node["objectMeta"]["name"], json.loads(r.text)["nodes"]))
-        
-    def execute(self):
-        self.publish_event(DashboardExposed(nodes=self.get_nodes()))        

src/modules/hunting/etcd.py

@@ -1,128 +0,0 @@
-import logging
-
-import requests
-
-from ...core.events import handler
-from ...core.events.types import Vulnerability, Event, OpenPortEvent
-from ...core.types import ActiveHunter, Hunter, KubernetesCluster, InformationDisclosure, RemoteCodeExec, \
-    UnauthenticatedAccess, AccessRisk
-
-
-""" Vulnerabilities """
-class EtcdRemoteWriteAccessEvent(Vulnerability, Event):
-    """Remote write access might grant an attacker full control over the kubernetes cluster"""
-
-    def __init__(self, write_res):
-        Vulnerability.__init__(self, KubernetesCluster, name="Etcd Remote Write Access Event", category=RemoteCodeExec, vid="KHV031")
-        self.evidence = write_res
-
-
-class EtcdRemoteReadAccessEvent(Vulnerability, Event):
-    """Remote read access might expose to an attacker cluster's possible exploits, secrets and more."""
-
-    def __init__(self, keys):
-        Vulnerability.__init__(self, KubernetesCluster,  name="Etcd Remote Read Access Event", category=AccessRisk, vid="KHV032")
-        self.evidence = keys
-
-
-class EtcdRemoteVersionDisclosureEvent(Vulnerability, Event):
-    """Remote version disclosure might give an attacker a valuable data to attack a cluster"""
-
-    def __init__(self, version):
-
-        Vulnerability.__init__(self, KubernetesCluster, name="Etcd Remote version disclosure",
-                               category=InformationDisclosure, vid="KHV033")
-        self.evidence = version
-
-
-class EtcdAccessEnabledWithoutAuthEvent(Vulnerability, Event):
-    """Etcd is accessible using HTTP (without authorization and authentication), it would allow a potential attacker to
-     gain access to the etcd"""
-
-    def __init__(self, version):
-        Vulnerability.__init__(self, KubernetesCluster,  name="Etcd is accessible using insecure connection (HTTP)",
-                               category=UnauthenticatedAccess, vid="KHV034")
-        self.evidence = version
-
-
-# Active Hunter
-@handler.subscribe(OpenPortEvent, predicate=lambda p: p.port == 2379)
-class EtcdRemoteAccessActive(ActiveHunter):
-    """Etcd Remote Access
-    Checks for remote write access to etcd- will attempt to add a new key to the etcd DB"""
-
-    def __init__(self, event):
-        self.event = event
-        self.write_evidence = ''
-
-    def db_keys_write_access(self):
-        logging.debug("Active hunter is attempting to write keys remotely on host " + self.event.host)
-        data = {
-            'value': 'remotely written data'
-        }
-        try:
-            r = requests.post("{protocol}://{host}:{port}/v2/keys/message".format(host=self.event.host, port=2379,
-                                                                                  protocol=self.protocol), data=data)
-            self.write_evidence = r.content if r.status_code == 200 and r.content != '' else False
-            return self.write_evidence
-        except requests.exceptions.ConnectionError:
-            return False
-
-    def execute(self):
-        if self.db_keys_write_access():
-            self.publish_event(EtcdRemoteWriteAccessEvent(self.write_evidence))
-
-
-# Passive Hunter
-@handler.subscribe(OpenPortEvent, predicate=lambda p: p.port == 2379)
-class EtcdRemoteAccess(Hunter):
-    """Etcd Remote Access
-    Checks for remote availability of etcd, its version, and read access to the DB
-    """
-
-    def __init__(self, event):
-        self.event = event
-        self.version_evidence = ''
-        self.keys_evidence = ''
-        self.protocol = 'https'
-
-    def db_keys_disclosure(self):
-        logging.debug(self.event.host + " Passive hunter is attempting to read etcd keys remotely")
-        try:
-            r = requests.get(
-                "{protocol}://{host}:{port}/v2/keys".format(protocol=self.protocol, host=self.event.host, port=2379),
-                verify=False)
-            self.keys_evidence = r.content if r.status_code == 200 and r.content != '' else False
-            return self.keys_evidence
-        except requests.exceptions.ConnectionError:
-            return False
-
-    def version_disclosure(self):
-        logging.debug(self.event.host + " Passive hunter is attempting to check etcd version remotely")
-        try:
-            r = requests.get(
-                "{protocol}://{host}:{port}/version".format(protocol=self.protocol, host=self.event.host, port=2379),
-                verify=False)
-            self.version_evidence = r.content if r.status_code == 200 and r.content != '' else False
-            return self.version_evidence
-        except requests.exceptions.ConnectionError:
-            return False
-
-    def insecure_access(self):
-        logging.debug(self.event.host + " Passive hunter is attempting to access etcd insecurely")
-        try:
-            r = requests.get("http://{host}:{port}/version".format(host=self.event.host, port=2379), verify=False)
-            return r.content if r.status_code == 200 and r.content != '' else False
-        except requests.exceptions.ConnectionError:
-            return False
-
-    def execute(self):
-        if self.insecure_access():  # make a decision between http and https protocol
-            self.protocol = 'http'
-        if self.version_disclosure():
-            self.publish_event(EtcdRemoteVersionDisclosureEvent(self.version_evidence))
-            if self.protocol == 'http':
-                self.publish_event(EtcdAccessEnabledWithoutAuthEvent(self.version_evidence))
-            if self.db_keys_disclosure():
-                self.publish_event(EtcdRemoteReadAccessEvent(self.keys_evidence))
-

src/modules/hunting/kubelet.py

@@ -1,427 +0,0 @@
-import json
-import logging
-from enum import Enum
-
-import re
-import requests
-import urllib3
-
-from __main__ import config
-from ...core.events import handler
-from ...core.events.types import Vulnerability, Event, K8sVersionDisclosure
-from ..discovery.kubelet import ReadOnlyKubeletEvent, SecureKubeletEvent
-from ...core.types import Hunter, ActiveHunter, KubernetesCluster, Kubelet, InformationDisclosure, RemoteCodeExec, AccessRisk
-urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
-
-
-""" Vulnerabilities """
-class ExposedPodsHandler(Vulnerability, Event):
-    """An attacker could view sensitive information about pods that are bound to a Node using the /pods endpoint"""
-    def __init__(self, pods):
-        Vulnerability.__init__(self, Kubelet, "Exposed Pods", category=InformationDisclosure)    
-        self.pods = pods
-        self.evidence = "count: {}".format(len(self.pods))
-
-
-class AnonymousAuthEnabled(Vulnerability, Event):
-    """The kubelet is misconfigured, potentially allowing secure access to all requests on the kubelet, without the need to authenticate"""
-    def __init__(self):
-        Vulnerability.__init__(self, Kubelet, "Anonymous Authentication", category=RemoteCodeExec, vid="KHV036")
-
-
-class ExposedContainerLogsHandler(Vulnerability, Event):
-    """Output logs from a running container are using the exposed /containerLogs endpoint"""
-    def __init__(self):
-        Vulnerability.__init__(self, Kubelet, "Exposed Container Logs", category=InformationDisclosure, vid="KHV037")    
-
-
-class ExposedRunningPodsHandler(Vulnerability, Event):
-    """Outputs a list of currently running pods, and some of their metadata, which can reveal sensitive information"""
-    def __init__(self, count):
-        Vulnerability.__init__(self, Kubelet, "Exposed Running Pods", category=InformationDisclosure, vid="KHV038")    
-        self.count = count
-        self.evidence = "{} running pods".format(self.count)
-
-
-class ExposedExecHandler(Vulnerability, Event):
-    """An attacker could run arbitrary commands on a container"""
-    def __init__(self):
-        Vulnerability.__init__(self, Kubelet, "Exposed Exec On Container", category=RemoteCodeExec, vid="KHV039")    
-
-
-class ExposedRunHandler(Vulnerability, Event):
-    """An attacker could run an arbitrary command inside a container"""
-    def __init__(self):
-        Vulnerability.__init__(self, Kubelet, "Exposed Run Inside Container", category=RemoteCodeExec, vid="KHV040")    
-
-
-class ExposedPortForwardHandler(Vulnerability, Event):
-    """An attacker could set port forwarding rule on a pod"""
-    def __init__(self):
-        Vulnerability.__init__(self, Kubelet, "Exposed Port Forward", category=RemoteCodeExec, vid="KHV041")    
-
-
-class ExposedAttachHandler(Vulnerability, Event):
-    """Opens a websocket that could enable an attacker to attach to a running container"""
-    def __init__(self):
-        Vulnerability.__init__(self, Kubelet, "Exposed Attaching To Container", category=RemoteCodeExec, vid="KHV042")    
-
-
-class ExposedHealthzHandler(Vulnerability, Event):
-    """By accessing the open /healthz handler, an attacker could get the cluster health state without authenticating"""
-    def __init__(self, status):
-        Vulnerability.__init__(self, Kubelet, "Cluster Health Disclosure", category=InformationDisclosure, vid="KHV043")    
-        self.status = status
-        self.evidence = "status: {}".format(self.status)
-
-
-class PrivilegedContainers(Vulnerability, Event):
-    """A Privileged container exist on a node. could expose the node/cluster to unwanted root operations"""
-    def __init__(self, containers):
-        Vulnerability.__init__(self, KubernetesCluster, "Privileged Container", category=AccessRisk, vid="KHV044")
-        self.containers = containers
-        self.evidence = "pod: {}, container: {}, count: {}".format(containers[0][0], containers[0][1], len(containers))
-
-
-class ExposedSystemLogs(Vulnerability, Event):
-    """System logs are exposed from the /logs endpoint on the kubelet"""
-    def __init__(self):
-        Vulnerability.__init__(self, Kubelet, "Exposed System Logs", category=InformationDisclosure, vid="KHV045")
-
-
-class ExposedKubeletCmdline(Vulnerability, Event):
-    """Commandline flags that were passed to the kubelet can be obtained from the pprof endpoints"""
-    def __init__(self, cmdline):
-        Vulnerability.__init__(self, Kubelet, "Exposed Kubelet Cmdline", category=InformationDisclosure, vid="KHV046")
-        self.cmdline = cmdline
-        self.evidence = "cmdline: {}".format(self.cmdline)
-
-
-""" Enum containing all of the kubelet handlers """
-class KubeletHandlers(Enum):
-    PODS = "pods"                                                                                 # GET
-    CONTAINERLOGS = "containerLogs/{pod_namespace}/{pod_id}/{container_name}"                        # GET
-    RUNNINGPODS = "runningpods"                                                                   # GET
-    EXEC = "exec/{pod_namespace}/{pod_id}/{container_name}?command={cmd}&input=1&output=1&tty=1"     # GET -> WebSocket
-    RUN = "run/{pod_namespace}/{pod_id}/{container_name}?cmd={cmd}"                                  # POST, For legacy reasons, it uses different query param than exec.
-    PORTFORWARD = "portForward/{pod_namespace}/{pod_id}?port={port}"                                # GET/POST
-    ATTACH = "attach/{pod_namespace}/{pod_id}/{container_name}?command={cmd}&input=1&output=1&tty=1" # GET -> WebSocket
-    LOGS = "logs/{path}"                                                                          # GET
-    PPROF_CMDLINE = "debug/pprof/cmdline"                                                         # GET
-    
-    
-""" dividing ports for seperate hunters """
-@handler.subscribe(ReadOnlyKubeletEvent)
-class ReadOnlyKubeletPortHunter(Hunter):
-    """Kubelet Readonly Ports Hunter
-    Hunts specific endpoints on open ports in the readonly Kubelet server
-    """
-    def __init__(self, event):
-        self.event = event
-        self.path = "http://{}:{}/".format(self.event.host, self.event.port)
-        self.pods_endpoint_data = ""
-
-    def get_k8s_version(self):
-        logging.debug("Passive hunter is attempting to find kubernetes version")
-        metrics = requests.get(self.path + "metrics").text
-        for line in metrics.split("\n"):
-            if line.startswith("kubernetes_build_info"):
-                for info in line[line.find('{') + 1: line.find('}')].split(','):
-                    k, v = info.split("=")
-                    if k == "gitVersion":
-                        return v.strip("\"")
-    
-    # returns list of tuples of Privileged container and their pod. 
-    def find_privileged_containers(self):
-        logging.debug("Passive hunter is attempting to find privileged containers and their pods")
-        privileged_containers = list()
-        if self.pods_endpoint_data:
-            for pod in self.pods_endpoint_data["items"]:
-                for container in pod["spec"]["containers"]:
-                    if "securityContext" in container and "privileged" in container["securityContext"] and container["securityContext"]["privileged"]:
-                        privileged_containers.append((pod["metadata"]["name"], container["name"]))
-        return privileged_containers if len(privileged_containers) > 0 else None
-    
-    def get_pods_endpoint(self):
-        logging.debug("Attempting to find pods endpoints")
-        response = requests.get(self.path + "pods")
-        if "items" in response.text:
-            return json.loads(response.text)
-
-    def check_healthz_endpoint(self):
-        r = requests.get(self.path + "healthz", verify=False)
-        return r.text if r.status_code == 200 else False
-
-    def execute(self):
-        self.pods_endpoint_data = self.get_pods_endpoint()
-        k8s_version = self.get_k8s_version()
-        privileged_containers = self.find_privileged_containers()
-        healthz = self.check_healthz_endpoint()
-        if k8s_version:
-            self.publish_event(K8sVersionDisclosure(version=k8s_version, from_endpoint="/metrics", extra_info="on the Kubelet"))
-        if privileged_containers:
-            self.publish_event(PrivilegedContainers(containers=privileged_containers))
-        if healthz:
-            self.publish_event(ExposedHealthzHandler(status=healthz))
-        if self.pods_endpoint_data:
-            self.publish_event(ExposedPodsHandler(pods=self.pods_endpoint_data["items"]))
-
-
-@handler.subscribe(SecureKubeletEvent)        
-class SecureKubeletPortHunter(Hunter):
-    """Kubelet Secure Ports Hunter
-    Hunts specific endpoints on an open secured Kubelet
-    """
-    class DebugHandlers(object):    
-        """ all methods will return the handler name if successful """
-        def __init__(self, path, pod, session=None):
-            self.path = path
-            self.session = session if session else requests.Session()
-            self.pod = pod
-            
-        # outputs logs from a specific container
-        def test_container_logs(self):
-            logs_url = self.path + KubeletHandlers.CONTAINERLOGS.value.format(
-                pod_namespace=self.pod["namespace"],
-                pod_id=self.pod["name"],
-                container_name=self.pod["container"]
-            )
-            return self.session.get(logs_url, verify=False).status_code == 200
-        
-        # need further investigation on websockets protocol for further implementation
-        def test_exec_container(self):
-            # opens a stream to connect to using a web socket
-            headers={"X-Stream-Protocol-Version": "v2.channel.k8s.io"}
-            exec_url = self.path + KubeletHandlers.EXEC.value.format(
-                pod_namespace=self.pod["namespace"],
-                pod_id=self.pod["name"],
-                container_name=self.pod["container"],
-                cmd = ""
-            )
-            return "/cri/exec/" in self.session.get(exec_url, headers=headers, allow_redirects=False ,verify=False).text
-
-        # need further investigation on websockets protocol for further implementation
-        def test_port_forward(self):
-            headers = {
-                "Upgrade": "websocket",  
-                "Connection": "Upgrade",
-                "Sec-Websocket-Key": "s",
-                "Sec-Websocket-Version": "13",
-                "Sec-Websocket-Protocol": "SPDY"
-
-            }
-            pf_url = self.path + KubeletHandlers.PORTFORWARD.value.format(
-                pod_namespace=self.pod["namespace"],
-                pod_id=self.pod["name"],
-                port=80
-            )
-            self.session.get(pf_url, headers=headers, verify=False, stream=True).status_code == 200
-            #TODO: what to return?
-
-        # executes one command and returns output
-        def test_run_container(self):
-            run_url = self.path + KubeletHandlers.RUN.value.format(
-                pod_namespace='test',
-                pod_id='test',
-                container_name='test',
-                cmd = ""
-            )
-            # if we get a Method Not Allowed, we know we passed Authentication and Authorization.
-            return self.session.get(run_url, verify=False).status_code == 405
-
-        # returns list of currently running pods
-        def test_running_pods(self):
-            pods_url = self.path + KubeletHandlers.RUNNINGPODS.value
-            r = self.session.get(pods_url, verify=False)
-            return json.loads(r.text) if r.status_code == 200 else False
-
-        # need further investigation on the differences between attach and exec
-        def test_attach_container(self):
-            # headers={"X-Stream-Protocol-Version": "v2.channel.k8s.io"}
-            attach_url = self.path + KubeletHandlers.ATTACH.value.format(
-                pod_namespace=self.pod["namespace"],
-                pod_id=self.pod["name"],
-                container_name=self.pod["container"],
-                cmd = ""
-            )
-            return "/cri/attach/" in self.session.get(attach_url, allow_redirects=False ,verify=False).text
-
-        # checks access to logs endpoint
-        def test_logs_endpoint(self):
-            logs_url = self.session.get(self.path + KubeletHandlers.LOGS.value.format(
-                path=""
-            )).text
-            return "<pre>" in logs_url
-
-        # returns the cmd line used to run the kubelet
-        def test_pprof_cmdline(self):
-            cmd = self.session.get(self.path + KubeletHandlers.PPROF_CMDLINE.value, verify=False)
-            return cmd.text if cmd.status_code == 200 else None
-            
-
-    def __init__(self, event):
-        self.event = event
-        self.session = requests.Session()
-        if self.event.secure:
-            self.session.headers.update({"Authorization": "Bearer {}".format(self.event.auth_token)})
-            # self.session.cert = self.event.client_cert
-        # copy session to event
-        self.event.session = self.session
-        self.path = "https://{}:{}/".format(self.event.host, 10250)
-        self.kubehunter_pod = {"name": "kube-hunter", "namespace": "default", "container": "kube-hunter"}
-        self.pods_endpoint_data = ""
-
-    def get_pods_endpoint(self):
-        response = self.session.get(self.path + "pods", verify=False)
-        if "items" in response.text:
-            return json.loads(response.text)
-
-    def check_healthz_endpoint(self):
-        r = requests.get(self.path + "healthz", verify=False)
-        return r.text if r.status_code == 200 else False
-
-    def execute(self):
-        if self.event.anonymous_auth:
-            self.publish_event(AnonymousAuthEnabled())
-
-        self.pods_endpoint_data = self.get_pods_endpoint()
-        healthz = self.check_healthz_endpoint() 
-        if self.pods_endpoint_data:
-            self.publish_event(ExposedPodsHandler(pods=self.pods_endpoint_data["items"]))
-        if healthz:
-            self.publish_event(ExposedHealthzHandler(status=healthz)) 
-        self.test_handlers()
-
-    def test_handlers(self):
-        # if kube-hunter runs in a pod, we test with kube-hunter's pod        
-        pod = self.kubehunter_pod if config.pod else self.get_random_pod()
-        if pod:
-            debug_handlers = self.DebugHandlers(self.path, pod=pod, session=self.session)
-            try:
-                # TODO: use named expressions, introduced in python3.8
-                running_pods = debug_handlers.test_running_pods()
-                if running_pods:
-                    self.publish_event(ExposedRunningPodsHandler(count=len(running_pods["items"])))            
-                cmdline = debug_handlers.test_pprof_cmdline()
-                if cmdline:
-                    self.publish_event(ExposedKubeletCmdline(cmdline=cmdline))
-                if debug_handlers.test_container_logs():
-                    self.publish_event(ExposedContainerLogsHandler())
-                if debug_handlers.test_exec_container():
-                    self.publish_event(ExposedExecHandler())      
-                if debug_handlers.test_run_container():
-                    self.publish_event(ExposedRunHandler())
-                if debug_handlers.test_port_forward():
-                    self.publish_event(ExposedPortForwardHandler()) # not implemented            
-                if debug_handlers.test_attach_container():
-                    self.publish_event(ExposedAttachHandler())
-                if debug_handlers.test_logs_endpoint():
-                    self.publish_event(ExposedSystemLogs())
-            except Exception as ex:
-                logging.debug(str(ex))
-        else:
-            pass # no pod to check on.
-
-    # trying to get a pod from default namespace, if doesn't exist, gets a kube-system one
-    def get_random_pod(self):
-        if self.pods_endpoint_data: 
-            pods_data = self.pods_endpoint_data["items"]
-            # filter running kubesystem pod
-            is_default_pod = lambda pod: pod["metadata"]["namespace"] == "default" and pod["status"]["phase"] == "Running"        
-            is_kubesystem_pod = lambda pod: pod["metadata"]["namespace"] == "kube-system" and pod["status"]["phase"] == "Running"
-            pod_data = next((pod_data for pod_data in pods_data if is_default_pod(pod_data)), None)
-            if not pod_data:
-                pod_data = next((pod_data for pod_data in pods_data if is_kubesystem_pod(pod_data)), None)
-            
-            if pod_data:
-                container_data = next((container_data for container_data in pod_data["spec"]["containers"]), None)
-                if container_data:
-                    return {
-                        "name": pod_data["metadata"]["name"],
-                        "container": container_data["name"],
-                        "namespace": pod_data["metadata"]["namespace"]
-                    }
-
-@handler.subscribe(ExposedRunHandler)
-class ProveRunHandler(ActiveHunter):
-    """Kubelet Run Hunter
-    Executes uname inside of a random container
-    """
-    def __init__(self, event):
-        self.event = event
-        self.base_path = "https://{host}:{port}/".format(host=self.event.host, port=self.event.port)
-       
-    def run(self, command, container):
-        run_url = KubeletHandlers.RUN.value.format(
-            pod_namespace=container["namespace"],
-            pod_id=container["pod"],
-            container_name=container["name"],
-            cmd=command
-        )
-        return self.event.session.post(self.base_path + run_url, verify=False).text
-
-    def execute(self):
-        pods_raw = self.event.session.get(self.base_path + KubeletHandlers.PODS.value, verify=False).text
-        if "items" in pods_raw:
-            pods_data = json.loads(pods_raw)['items']
-            for pod_data in pods_data:
-                container_data = next((container_data for container_data in pod_data["spec"]["containers"]), None)
-                if container_data:
-                    output = self.run("uname -a", container={
-                        "namespace": pod_data["metadata"]["namespace"],
-                        "pod": pod_data["metadata"]["name"],
-                        "name": container_data["name"]                    
-                    })
-                    if output and "exited with" not in output:
-                        self.event.evidence = "uname -a: " + output
-                        break
-
-@handler.subscribe(ExposedContainerLogsHandler)
-class ProveContainerLogsHandler(ActiveHunter):
-    """Kubelet Container Logs Hunter
-    Retrieves logs from a random container 
-    """
-    def __init__(self, event):
-        self.event = event
-        protocol = "https" if self.event.port == 10250 else "http"
-        self.base_url = "{protocol}://{host}:{port}/".format(protocol=protocol, host=self.event.host, port=self.event.port)
-
-    def execute(self):
-        pods_raw = self.event.session.get(self.base_url + KubeletHandlers.PODS.value, verify=False).text
-        if "items" in pods_raw:
-            pods_data = json.loads(pods_raw)['items']
-            for pod_data in pods_data:
-                container_data = next((container_data for container_data in pod_data["spec"]["containers"]), None)
-                if container_data:
-                    output = requests.get(self.base_url + KubeletHandlers.CONTAINERLOGS.value.format(
-                        pod_namespace=pod_data["metadata"]["namespace"],
-                        pod_id=pod_data["metadata"]["name"],
-                        container_name=container_data["name"]
-                    ), verify=False)
-                    if output.status_code == 200 and output.text:
-                        self.event.evidence = "{}: {}".format(
-                            container_data["name"],
-                            output.text.encode('utf-8')
-                        )
-                        return
-
-@handler.subscribe(ExposedSystemLogs)
-class ProveSystemLogs(ActiveHunter):
-    """Kubelet System Logs Hunter
-    Retrieves commands from host's system audit
-    """
-    def __init__(self, event):
-        self.event = event
-        self.base_url = "https://{host}:{port}/".format(host=self.event.host, port=self.event.port)
-
-    def execute(self):
-        audit_logs = self.event.session.get(self.base_url + KubeletHandlers.LOGS.value.format(
-            path="audit/audit.log"
-        ), verify=False).text
-        logging.debug("accessed audit log of host: {}".format(audit_logs[:10]))
-        # iterating over proctitles and converting them into readable strings
-        proctitles = list()
-        for proctitle in re.findall(r"proctitle=(\w+)", audit_logs):
-            proctitles.append(bytes.fromhex(proctitle).decode('utf-8').replace("\x00", " "))
-        self.event.proctitles = proctitles
-        self.event.evidence = "audit log: {}".format('; '.join(proctitles))

src/modules/hunting/proxy.py

@@ -1,93 +0,0 @@
-import logging
-from enum import Enum
-
-import requests
-import json
-
-from ...core.events import handler
-from ...core.events.types import Event, Vulnerability, K8sVersionDisclosure
-from ...core.types import ActiveHunter, Hunter, KubernetesCluster, InformationDisclosure
-from ..discovery.dashboard import KubeDashboardEvent
-from ..discovery.proxy import KubeProxyEvent
-
-""" Vulnerabilities """
-class KubeProxyExposed(Vulnerability, Event):
-    """All operations on the cluster are exposed"""
-    def __init__(self):
-        Vulnerability.__init__(self, KubernetesCluster, "Proxy Exposed", category=InformationDisclosure, vid="KHV049")
-
-class Service(Enum):
-    DASHBOARD = "kubernetes-dashboard"
-
-@handler.subscribe(KubeProxyEvent)
-class KubeProxy(Hunter):
-    """Proxy Hunting
-    Hunts for a dashboard behind the proxy 
-    """
-    def __init__(self, event):
-        self.event = event
-        self.api_url = "http://{host}:{port}/api/v1".format(host=self.event.host, port=self.event.port)
-
-    def execute(self):
-        self.publish_event(KubeProxyExposed())
-        for namespace, services in self.services.items():
-            for service in services:
-                if service == Service.DASHBOARD.value:
-                    logging.debug(service)
-                    curr_path = "api/v1/namespaces/{ns}/services/{sv}/proxy".format(ns=namespace,sv=service) # TODO: check if /proxy is a convention on other services
-                    self.publish_event(KubeDashboardEvent(path=curr_path, secure=False))
-
-    @property
-    def namespaces(self):
-        resource_json = requests.get(self.api_url + "/namespaces").json()
-        return self.extract_names(resource_json)
-
-    @property
-    def services(self):
-        # map between namespaces and service names
-        services = dict()
-        for namespace in self.namespaces:
-            resource_path = "/namespaces/{ns}/services".format(ns=namespace)
-            resource_json = requests.get(self.api_url + resource_path).json()
-            services[namespace] = self.extract_names(resource_json)
-        logging.debug(services)
-        return services
-
-    @staticmethod
-    def extract_names(resource_json):
-        names = list()
-        for item in resource_json["items"]:
-            names.append(item["metadata"]["name"])
-        return names
-
-@handler.subscribe(KubeProxyExposed)
-class ProveProxyExposed(ActiveHunter):
-    """Build Date Hunter
-    Hunts when proxy is exposed, extracts the build date of kubernetes
-    """
-    def __init__(self, event):
-        self.event = event
-
-    def execute(self):
-        version_metadata = json.loads(requests.get("http://{host}:{port}/version".format(
-            host=self.event.host,
-            port=self.event.port,
-        ), verify=False).text)
-        if "buildDate" in version_metadata:
-            self.event.evidence = "build date: {}".format(version_metadata["buildDate"])
-
-@handler.subscribe(KubeProxyExposed)
-class K8sVersionDisclosureProve(ActiveHunter):
-    """K8s Version Hunter
-    Hunts Proxy when exposed, extracts the version
-    """
-    def __init__(self, event):
-        self.event = event
-
-    def execute(self):
-        version_metadata = json.loads(requests.get("http://{host}:{port}/version".format(
-            host=self.event.host,
-            port=self.event.port,
-        ), verify=False).text)
-        if "gitVersion" in version_metadata:
-            self.publish_event(K8sVersionDisclosure(version=version_metadata["gitVersion"], from_endpoint="/version", extra_info="on the kube-proxy"))

src/modules/report/__init__.py

@@ -1,7 +0,0 @@
-from os.path import dirname, basename, isfile
-import glob
-
-# dynamically importing all modules in folder
-files = glob.glob(dirname(__file__)+"/*.py")
-for module_name in (basename(f)[:-3] for f in files if isfile(f) and not f.endswith('__init__.py')):
-    exec('from .{} import *'.format(module_name))

src/modules/report/base.py

@@ -1,59 +0,0 @@
-from .collector import services, vulnerabilities, hunters, services_lock, vulnerabilities_lock
-from src.core.types import Discovery
-from __main__ import config
-
-
-class BaseReporter(object):
-    def get_nodes(self):
-        nodes = list()
-        node_locations = set()
-        with services_lock:
-            for service in services:
-                node_location = str(service.host)
-                if node_location not in node_locations:
-                    nodes.append({"type": "Node/Master", "location": str(service.host)})
-                    node_locations.add(node_location)
-        return nodes
-
-    def get_services(self):
-        with services_lock:
-            services_data = [{"service": service.get_name(),
-                     "location": "{}:{}{}".format(service.host, service.port, service.get_path()),
-                     "description": service.explain()}
-                    for service in services]
-        return services_data
-
-    def get_vulnerabilities(self):
-        with vulnerabilities_lock:
-            vulnerabilities_data = [{"location": vuln.location(),
-                     "vid": vuln.get_vid(),
-                     "category": vuln.category.name,
-                     "severity": vuln.get_severity(),
-                     "vulnerability": vuln.get_name(),
-                     "description": vuln.explain(),
-                     "evidence": str(vuln.evidence),
-                     "hunter": vuln.hunter.get_name()}
-                    for vuln in vulnerabilities]
-        return vulnerabilities_data
-
-    def get_hunter_statistics(self):
-        hunters_data = list()
-        for hunter, docs in hunters.items():
-            if not Discovery in hunter.__mro__:
-                name, doc = hunter.parse_docs(docs)
-                hunters_data.append({"name": name, "description": doc, "vulnerabilities": hunter.publishedVulnerabilities})
-        return hunters_data
-
-    def get_report(self):
-        report = {
-            "nodes": self.get_nodes(),
-            "services": self.get_services(),
-            "vulnerabilities": self.get_vulnerabilities()
-        }
-
-        if config.statistics:
-            report["hunter_statistics"] = self.get_hunter_statistics()
-
-        report["kburl"] = "https://aquasecurity.github.io/kube-hunter/kb/{vid}"
-
-        return report

src/modules/report/collector.py

@@ -1,95 +0,0 @@
-import logging
-
-from __main__ import config
-from src.core.events import handler
-from src.core.events.types import Event, Service, Vulnerability, HuntFinished, HuntStarted, ReportDispatched
-import threading
-
-
-global services_lock
-services_lock = threading.Lock()
-services = list()
-
-global vulnerabilities_lock
-vulnerabilities_lock = threading.Lock()
-vulnerabilities = list()
-
-hunters = handler.all_hunters
-
-def console_trim(text, prefix=' '):
-    a = text.split(" ")
-    b = a[:]
-    total_length = 0
-    count_of_inserts = 0
-    for index, value in enumerate(a):
-        if (total_length + (len(value) + len(prefix))) >= 80:
-            b.insert(index + count_of_inserts, '\n')
-            count_of_inserts += 1
-            total_length = 0
-        else:
-            total_length += len(value) + len(prefix)
-    return '\n'.join([prefix + line.strip(' ') for line in ' '.join(b).split('\n')])
-
-
-def wrap_last_line(text, prefix='| ', suffix='|_'):
-    lines = text.split('\n')
-    lines[-1] = lines[-1].replace(prefix, suffix, 1)
-    return '\n'.join(lines)
-
-
-@handler.subscribe(Service)
-@handler.subscribe(Vulnerability)
-class Collector(object):
-    def __init__(self, event=None):
-        self.event = event
-
-    def execute(self):
-        """function is called only when collecting data"""
-        global services
-        global vulnerabilities
-        bases = self.event.__class__.__mro__
-        if Service in bases:
-            with services_lock:
-                services.append(self.event)
-            import datetime
-            logging.info("|\n| {name}:\n|   type: open service\n|   service: {name}\n|_  location: {location}".format(
-                name=self.event.get_name(),
-                location=self.event.location(),
-                time=datetime.time()
-            ))
-
-        elif Vulnerability in bases:
-            with vulnerabilities_lock:
-                vulnerabilities.append(self.event)
-            logging.info(
-                "|\n| {name}:\n|   type: vulnerability\n|   location: {location}\n|   description: \n{desc}".format(
-                    name=self.event.get_name(),
-                    location=self.event.location(),
-                    desc=wrap_last_line(console_trim(self.event.explain(), '|     '))
-                ))
-
-
-class TablesPrinted(Event):
-    pass
-
-
-@handler.subscribe(HuntFinished)
-class SendFullReport(object):
-    def __init__(self, event):
-        self.event = event
-
-    def execute(self):
-        report = config.reporter.get_report()
-        config.dispatcher.dispatch(report)
-        handler.publish_event(ReportDispatched())
-        handler.publish_event(TablesPrinted())
-
-
-@handler.subscribe(HuntStarted)
-class StartedInfo(object):
-    def __init__(self, event):
-        self.event = event
-
-    def execute(self):
-        logging.info("~ Started")
-        logging.info("~ Discovering Open Kubernetes Services...")

src/modules/report/dispatchers.py

@@ -1,55 +0,0 @@
-import logging
-import os
-import requests
-from __main__ import config
-
-
-class HTTPDispatcher(object):
-    def dispatch(self, report):
-        logging.debug('Dispatching report via http')
-        dispatch_method = os.environ.get(
-            'KUBEHUNTER_HTTP_DISPATCH_METHOD',
-            'POST'
-        ).upper()
-        dispatch_url = os.environ.get(
-            'KUBEHUNTER_HTTP_DISPATCH_URL',
-            'https://localhost/'
-        )
-        try:
-            r = requests.request(
-                dispatch_method,
-                dispatch_url,
-                json=report,
-                headers={'Content-Type': 'application/json'}
-            )
-            r.raise_for_status()
-            logging.info('\nReport was dispatched to: {url}'.format(url=dispatch_url))
-            logging.debug(
-                "\tResponse Code: {status}\n\tResponse Data:\n{data}".format(
-                    status=r.status_code,
-                    data=r.text
-                )
-            )
-        except requests.HTTPError as e:
-            # specific http exceptions
-            logging.error(
-                "\nCould not dispatch report using HTTP {method} to {url}\nResponse Code: {status}".format(
-                    status=r.status_code,
-                    url=dispatch_url,
-                    method=dispatch_method
-                )
-            )
-        except Exception as e:
-            # default all exceptions
-            logging.error("\nCould not dispatch report using HTTP {method} to {url} - {error}".format(
-                method=dispatch_method,
-                url=dispatch_url,
-                error=e
-            ))
-
-class STDOUTDispatcher(object):
-    def dispatch(self, report):
-        logging.debug('Dispatching report via stdout')
-        if config.report == "plain":
-            logging.info("\n{div}".format(div="-" * 10))
-        print(report)