V-245542—Kubernetes API Server must disable basic authentication to protect information in transit.

CAT I - High

CNTR-K8-002620

>Control Description

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.

>Check Content

Change to the /etc/kubernetes/manifests/ directory on the Kubernetes Control Plane.

$grep -i basic-auth-file *

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

>Remediation

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

>CCI References

CCI-002448

Control Correlation Identifiers (CCIs) map STIG findings to NIST 800-53 controls.

>Cross-Framework Mappings

NIST SP 800-53 r5

via DISA CCI List

SC-12

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