Title

The Kubernetes API Server must be set to audit log maximum backup. (Cat II impact)

Discussion

The Kubernetes API Server must set enough storage to retain logs for monitoring suspicious activity and system misconfiguration, and provide evidence for Cyber Security Investigations.

Check Content

Change to the /etc/kubernetes/manifests/ directory on the Kubernetes Master Node. Run the command: grep -i audit-log-maxbackup * If the setting "audit-log-maxbackup" is not set in the Kubernetes API Server manifest file or it is set less than "10", this is a finding.

Fix Text

Edit the Kubernetes API Server manifest file in the /etc/kubernetes/manifests directory on the Kubernetes Master Node. Set the value of "--audit-log-maxbackup" to a minimum of "10".

Additional Identifiers

Rule ID: SV-242463r712745_rule

Vulnerability ID: V-242463

Group Title: SRG-APP-000516-CTR-001335

Expert Comments

CCIs tied to check.

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