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The Kubernetes admin.conf must have file permissions set to 644 or more restrictive.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-242460 | CNTR-K8-003270 | SV-242460r712736_rule | Medium |
| Description |
|---|
| The Kubernetes conf files contain the arguments and settings for the Master Node services. These services are controller and scheduler. If these files can be changed, the scheduler will be implementing the changes immediately. |
| STIG | Date |
|---|---|
| Kubernetes Security Technical Implementation Guide | 2021-04-14 |
Details
| Check Text ( C-45735r712734_chk ) |
|---|
| Review the permissions of the Kubernetes config files by using the command: stat -c %a /etc/kubernetes/admin.conf stat -c %a /etc/kubernetes/scheduler.conf stat -c %a /etc/kubernetes/controller-manager.conf If any of the files are have permissions more permissive than "644", this is a finding. |
| Fix Text (F-45693r712735_fix) |
|---|
| Change the permissions of the conf files to "644" by executing the command: chmod 644 /etc/kubernetes/admin.conf chmod 644 /etc/kubernetes/scheduler.conf chmod 644 /etc/kubernetes/controller-manager.conf |