C-0100 - Ensure that the Container Network Interface file permissions are set to 600 or more restrictive

Prerequisites

Run Kubescape with host sensor (see here)

Framework

cis-v1.23-t1.0.1

Severity

Medium

Description of the the issue

Container Network Interface provides various networking options for overlay networking. You should consult their documentation and restrict their respective file permissions to maintain the integrity of those files. Those files should be writable by only the administrators on the system.

Related resources

What does this control test

Ensure that the Container Network Interface files have 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 Control Plane node. For example,

stat -c %a <path/to/cni/files>

Verify that the permissions are 600 or more restrictive.

Remediation