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


Finding ID Version Rule ID IA Controls Severity
V-245542 CNTR-K8-002620 SV-245542r864033_rule High
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.
Kubernetes Security Technical Implementation Guide 2022-12-02


Check Text ( C-48817r863943_chk )
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.
Fix Text (F-48772r863944_fix)
Edit the Kubernetes API Server manifest file in the /etc/kubernetes/manifests directory on the Kubernetes Control Plane. Remove the setting "--basic-auth-file".