Details

Restrict kubelet nodes to reading only objects associated with them.

Rationale:

The Node authorization mode only allows kubelets to read Secret, ConfigMap, PersistentVolume, and PersistentVolumeClaim objects associated with their nodes.

Impact:

None

Solution

Edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml on the master node and set the –authorization-mode parameter to a value that includes Node.

–authorization-mode=Node,RBAC

Default Value:

By default, Node authorization is not enabled.

Supportive Information

The following resource is also helpful.

• https://workbench.cisecurity.org/files/3371

This security hardening control applies to the following category of controls within NIST 800-53: Access Control.This control applies to the following type of system Unix.

References

• 800-53|AC-6
• CSCv6|9.1
• CSCv7|9.2

Source

• Tenable.com/audits