Cis Gke V190 4.6.3

4.6.3 Apply Security Context to Pods and Containers (Manual)

Profile Applicability

• Level 2

Description

Apply Security Context to Pods and Containers.

Rationale

A security context defines the operating system security settings (uid, gid, capabilities, SELinux role, etc..) applied to a container. When designing containers and pods, make sure that the security context is configured for pods, containers, and volumes. A security context is a property defined in the deployment yaml. It controls the security parameters that will be assigned to the pod/container/volume. There are two levels of security context: pod level security context, and container level security context.

Impact

If you incorrectly apply security contexts, there may be issues running the pods.

Audit

Review the pod definitions in the cluster and verify that the security contexts have been defined as appropriate.

Remediation

Follow the Kubernetes documentation and apply security contexts to your pods. For a suggested list of security contexts, you may refer to the CIS Google Container-Optimized OS Benchmark.

Default Value

By default, no security contexts are automatically applied to pods.

References

1. https://kubernetes.io/docs/concepts/workloads/pods/
2. https://kubernetes.io/docs/concepts/containers/
3. https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
4. https://learn.cisecurity.org/benchmarks

CIS Controls