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V-242446

CAT II (Medium)

The Kubernetes conf files must be owned by root.

Rule ID

SV-242446r961863_rule

STIG

Kubernetes Security Technical Implementation Guide

Version

V2R6

CCIs

CCI-000366

Discussion

The Kubernetes conf 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. Many of the security settings within the document are implemented through this file.

Check Content

Review the Kubernetes conf files by using the command:

stat -c %U:%G /etc/kubernetes/admin.conf | grep -v root:root
stat -c %U:%G /etc/kubernetes/scheduler.conf | grep -v root:root
stat -c %U:%G /etc/kubernetes/controller-manager.conf | grep -v root:root

If the command returns any non root:root file permissions, this is a finding.

Fix Text

Change the ownership of the conf files to root: root by executing the command:

chown root:root /etc/kubernetes/admin.conf 
chown root:root /etc/kubernetes/scheduler.conf 
chown root:root /etc/kubernetes/controller-manager.conf