CIS-1.1.13 - Ensure that the admin.conf file permissions are set to 600

Ensure that the admin.conf file permissions are set to 600

Note: to enable this control run Kubescape with host sensor (see here)

Framework

CIS

Severity

High

Description of the the issue

The admin.conf is the administrator kubeconfig file defining various settings for the administration of the cluster. This file contains private key and respective certificate allowed to fully manage the cluster. You should restrict its file permissions to maintain the integrity and confidentiality of the file. The file should be readable and writable by only the administrators on the system.

Related resources

What does this control test

Ensure that the admin.conf file has permissions of 600.

How to check it manually

Run the following command (based on the file location on your system) on the Control Plane node. For example,

stat -c %a /etc/kubernetes/admin.conf

Verify that the permissions are 600 or more restrictive.

Remediation

Run the below command (based on the file location on your system) on the Control Plane node. For example,

chmod 600 /etc/kubernetes/admin.conf

Impact Statement

None.

Default Value

By default, admin.conf has permissions of 600.

Example

No example