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		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	2024-08-22

Details

Check Text (C-45734r918198_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/*