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Ensure that the Kubernetes PKI key file permissions are set to 600 (Manual)
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Showing SKILL.md
| name | cis-k8s-v1120-1.1.21 |
| description | Ensure that the Kubernetes PKI key file permissions are set to 600 (Manual) |
| category | cis-k8s |
| version | 1.12.0 |
| author | cyberstrike-official |
| tags | ["cis","kubernetes","control-plane","config-files","pki","keys","permissions","level1"] |
| cis_id | 1.1.21 |
| cis_benchmark | CIS Kubernetes Benchmark v1.12.0 |
| tech_stack | ["kubernetes"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Ensure that Kubernetes PKI key files have permissions of 600.
Kubernetes makes use of a number of key files as part of the operation of its components. The permissions on these files should be set to 600 to protect their integrity and confidentiality.
None
Run the below command (based on the file location on your system) on the Control Plane node. For example,
stat -c '%a' /etc/kubernetes/pki/*.key
Verify that the permissions are 600 or more restrictive.
or
ls -l /etc/kubernetes/pki/*.key
Verify that the permissions are -rw------
Run the below command (based on the file location on your system) on the Control Plane node. For example,
chmod -R 600 /etc/kubernetes/pki/*.key
By default, the keys used by Kubernetes are set to have permissions of 600
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 5.4 Restrict Administrator Privileges to Dedicated Administrator Accounts | * | * | * |
| v7 | 4 Controlled Use of Administrative Privileges |