cyberstrikeus 4.1.4 If proxy kubeconfig file exists ensure ownership is set to root:root (Manual)
Profile Applicability
- Level 1 - Worker Node
Description
If kube-proxy is running, ensure that the file ownership of its kubeconfig file is set to root:root.
Rationale
The kubeconfig file for kube-proxy controls various parameters for the kube-proxy service in the worker node. You should set its file ownership to maintain the integrity of the file. The file should be owned by root:root.
Impact
None
Audit
Find the kubeconfig file being used by kube-proxy by running the following command:
ps -ef | grep kube-proxy
If kube-proxy is running, get the kubeconfig file location from the --kubeconfig parameter.
To perform the audit:
Run the below command (based on the file location on your system) on the each worker node. For example,
stat -c %U:%G <path><filename>
Verify that the ownership is set to root:root.
Remediation
Run the below command (based on the file location on your system) on the each worker node. For example,
chown root:root <proxy kubeconfig file>
Default Value
By default, proxy file ownership is set to root:root.
References
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 5.4 Restrict Administrator Privileges to Dedicated Administrator Accounts | x | x | x |
| v7 | 4 Controlled Use of Administrative Privileges |