Title

The Kubernetes kubelet service must have file permissions set to 644 or more restrictive. (Cat II impact)

Discussion

The Kubernetes kubeadm.conf contains sensitive information regarding the cluster nodes configuration. If this file can be modified, the Kubernetes Platform Plane would be degraded or compromised for malicious intent. Many of the security settings within the document are implemented through this file.

Check Content

Review the permissions of the Kubernetes kubelet by using the command: stat -c %a /usr/bin/kubeadm If any of the files have permissions more permissive than "644", this is a finding.

Fix Text

Change the permissions of Kubeadm to "644" by executing the command: chown 644 /usr/bin/kubeadm

Additional Identifiers

Rule ID: SV-242455r712721_rule

Vulnerability ID: V-242455

Group Title: SRG-APP-000516-CTR-001325

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.