Details
Ensure that if the kubelet refers to a configuration file with the –config argument, that file is owned by root:root.
Rationale:
The kubelet reads various parameters, including security settings, from a config file specified by the –config argument. If this file is specified you should restrict its file permissions to maintain the integrity of the file. The file should be owned by root:root.
Impact:
None
Solution
Run the following command (using the config file location identied in the Audit step)
chown root:root /etc/kubernetes/kubelet.conf
Default Value:
By default, /var/lib/kubelet/config.yaml file as set up by kubeadm is owned by root:root.
Supportive Information
The following resource is also helpful.
This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Unix.