V-242460—The Kubernetes admin kubeconfig must have file permissions set to 644 or more restrictive.
CAT II - Medium
CNTR-K8-003270
>Control Description
The Kubernetes admin kubeconfig files contain the arguments and settings for the Control Plane services. These services are controller and scheduler. If these files can be changed, the scheduler will be implementing the changes immediately.
>Check Content
Review the permissions of the Kubernetes config files by using the command: stat -c %a /etc/kubernetes/admin.conf stat -c %a /etc/kubernetes/scheduler.conf stat -c %a /etc/kubernetes/controller-manager.conf If any of the files are have permissions more permissive than "644", this is a finding.
>Remediation
Change the permissions of the conf files to "644" by executing the command: chmod 644 /etc/kubernetes/admin.conf chmod 644 /etc/kubernetes/scheduler.conf chmod 644 /etc/kubernetes/controller-manager.conf
>CCI References
Control Correlation Identifiers (CCIs) map STIG findings to NIST 800-53 controls.
>Cross-Framework Mappings
NIST SP 800-53 r5
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