Kubescape is the first tool for testing if Kubernetes is deployed securely as defined in Kubernetes Hardening Guidance by to NSA and CISA Tests are configured with YAML files, making this tool easy to update as test specifications evolve.
TL;DR
Installation
To install the tool locally, run this:
curl -s https://raw.githubusercontent.com/armosec/kubescape/master/install.sh | /bin/bash
Run
To get a fast check of the security posture of your Kubernetes cluster, run this:
kubescape scan framework nsa
Status
How to build
go mod tidy && go build -o kubescape 🤪
Under the hood
Tests
Kubescape is running the following tests according to what is defined by Kubernetes Hardening Guidance by to NSA and CISA
- Non-root containers
- Immutable container filesystem
- Building secure container images
- Privileged containers
- hostPID, hostIPC privileges
- hostNetwork access
- allowedHostPaths field
- Protecting pod service account tokens
- Pods in kube-system and kube-public
- Resource policies
- Control plane hardening
- Encrypted secrets
- Anonymous Requests
Technology
Kubescape based on OPA engine: https://github.com/open-policy-agent/opa and ARMO's posture controls.
The tools retrieves Kubernetes objects from the API server and runs a set of regos snippets developed by ARMO.
The results by default printed in a pretty "console friendly" manner, but they can be retrieved in JSON format for further processing.