| name | cis-k8s-v1120-1.2.13 |
| description | Ensure that the admission control plugin NamespaceLifecycle is set (Automated) |
| category | cis-k8s |
| version | 1.12.0 |
| author | cyberstrike-official |
| tags | ["cis","kubernetes","control-plane","api-server","admission-control","namespace-lifecycle"] |
| cis_id | 1.2.13 |
| cis_benchmark | CIS Kubernetes Benchmark v1.12.0 |
| tech_stack | ["kubernetes"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
1.2.13 Ensure that the admission control plugin NamespaceLifecycle is set (Automated)
Profile Applicability
Description
Reject creating objects in a namespace that is undergoing termination.
Rationale
Setting admission control policy to NamespaceLifecycle ensures that objects cannot be created in non-existent namespaces, and that namespaces undergoing termination are not used for creating the new objects. This is recommended to enforce the integrity of the namespace termination process and also for the availability of the newer objects.
Impact
None
Audit
Run the following command on the Control Plane node:
ps -ef | grep kube-apiserver
Verify that the --disable-admission-plugins argument is set to a value that does not include NamespaceLifecycle.
Remediation
Edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml on the Control Plane node and set the --disable-admission-plugins parameter to ensure it does not include NamespaceLifecycle.
Default Value
By default, NamespaceLifecycle is set.
References
- https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/
- https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/#namespacelifecycle
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|
| v8 | 4 Secure Configuration of Enterprise Assets and Software | | | |
| v7 | 5.1 Establish Secure Configurations | * | * | * |
