The Kubernetes etcd must have file permissions set to 644 or more restrictive.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-242459 | CNTR-K8-003260 | SV-242459r961863_rule | CCI-000366 | medium |
| Description | ||||
| The Kubernetes etcd key-value store provides a way to store data to the Control Plane. If these files can be changed, data to API object and Control Plane would be compromised. | ||||
| STIG | Date | |||
| Kubernetes Security Technical Implementation Guide | 2025-05-16 | |||
Details
Check Text (C-242459r961863_chk)
Review the permissions of the Kubernetes etcd by using the command:
ls -AR /var/lib/etcd/*
If any of the files have permissions more permissive than "644", this is a finding.
Fix Text (F-45692r918199_fix)
Change the permissions of the manifest files to "644" by executing the command:
chmod -R 644 /var/lib/etcd/*