C-0170 - If the kubelet config.yaml configuration file is being used validate permissions set to 600 or more restrictive
Prerequisites
Run Kubescape with host sensor (see here)
Framework
cis-v1.23-t1.0.1
Severity
High
Description of the the issue
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 writable by only the administrators on the system.
Related resources
What does this control test
Ensure that if the kubelet refers to a configuration file with the --config
argument, that file has permissions of 600 or more restrictive.
How to check it manually
Run the below command (based on the file location on your system) on the each worker node. For example,
stat -c %a /var/lib/kubelet/config.yaml
Verify that the permissions are 600
or more restrictive.
Remediation
Run the following command (using the config file location identied in the Audit step)
chmod 600 /var/lib/kubelet/config.yaml
Impact Statement
None
Default Value
By default, the /var/lib/kubelet/config.yaml file as set up by kubeadm
has permissions of 600.
Example
No example
Updated 3 days ago