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V-242460

CAT II (Medium)

The Kubernetes admin kubeconfig must have file permissions set to 644 or more restrictive.

Rule ID

SV-242460r961863_rule

STIG

Kubernetes Security Technical Implementation Guide

Version

V2R6

CCIs

CCI-000366

Discussion

The Kubernetes admin kubeconfig files contain the arguments and settings for the Control Plane services. These services are controller and scheduler. If these files can be changed, the scheduler will be implementing the changes immediately.

Check Content

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

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