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The Kubernetes API Server must have file permissions set to 644 or more restrictive.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-242458 | CNTR-K8-003250 | SV-242458r712730_rule | Medium |
| Description |
|---|
| The Kubernetes manifests are those files that contain the arguments and settings for the Master Node services. These services are etcd, the API Server, controller, proxy, and scheduler. If these files can be changed, the scheduler will be implementing the changes immediately. Many of the security settings within the document are implemented through these manifests. |
| STIG | Date |
|---|---|
| Kubernetes Security Technical Implementation Guide | 2021-04-14 |
Details
| Check Text ( C-45733r712728_chk ) |
|---|
| Review the permissions of the Kubernetes Kubelet by using the command: stat -c %a /etc/kubernetes/manifests/* If any of the files are have permissions more permissive than "644", this is a finding. |
| Fix Text (F-45691r712729_fix) |
|---|
| Change the permissions of the manifest files to "root: root" by executing the command: chown root:root /etc/kubernetes/manifests/* |