# Cis K8S V1110 4.1.4

> If proxy kubeconfig file exists ensure ownership is set to root:root (Manual)

- Skill: `cyberstrikeus/cis-k8s-v1110-4-1-4` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-k8s-v1110-4-1-4`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-k8s-v1110-4-1-4/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector CAUTION)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: DevOps & Infra
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/cis-k8s-v1110-4-1-4

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# 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:

```bash
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,

```bash
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,

```bash
chown root:root <proxy kubeconfig file>
```

## Default Value

By default, `proxy` file ownership is set to `root:root`.

## References

1. [https://kubernetes.io/docs/admin/kube-proxy/](https://kubernetes.io/docs/admin/kube-proxy/)

## 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                             |      |      |      |