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V-242466

CAT II (Medium)

The Kubernetes PKI CRT must have file permissions set to 644 or more restrictive.

Rule ID

SV-242466r961863_rule

STIG

Kubernetes Security Technical Implementation Guide

Version

V2R6

CCIs

CCI-000366

Discussion

The Kubernetes PKI directory contains all certificates (.crt files) supporting secure network communications in the Kubernetes Control Plane. If these files can be modified, data traversing within the architecture components would become unsecure and compromised.

Check Content

Review the permissions of the Kubernetes PKI cert files by using the command:

sudo find /etc/kubernetes/pki/* -name "*.crt" | xargs stat -c '%n %a'

If any of the files have permissions more permissive than "644", this is a finding.

Fix Text

Change the ownership of the cert files to "644" by executing the command: 

find /etc/kubernetes/pki -name "*.crt" | xargs chmod 644