Kubernetes API Server must disable basic authentication to protect information in transit.

Kubernetes basic authentication sends and receives request containing username, uid, groups, and other fields over a clear text HTTP communication. Basic authentication does not provide any security mechanisms using encryption standards. PKI certificate-based authentication must be set over a secure channel to ensure confidentiality and integrity. Basic authentication must not be set in the manifest file.

Change to the /etc/kubernetes/manifests/ directory on the Kubernetes Control Plane. Run the command: grep -i basic-auth-file *

If "basic-auth-file" is set in the Kubernetes API server manifest file this is a finding.

Edit the Kubernetes API Server manifest file in the /etc/kubernetes/manifests directory on the Kubernetes Control Plane. Remove the setting "--basic-auth-file".