Cis Ocp V190 4.1.4

---
name: cis-ocp-v190-4.1.4
description: "If proxy kubeconfig file exists ensure ownership is set to root:root (Manual)"
category: cis-openshift
version: "1.9.0"
author: cyberstrike-official
tags: [cis, openshift, kubernetes, redhat, worker-nodes, worker-node-config-files]
cis_id: "4.1.4"
cis_benchmark: "CIS Red Hat OpenShift Container Platform Benchmark v1.9.0"
tech_stack: [kubernetes, openshift, redhat]
cwe_ids: []
chains_with: []
prerequisites: []
severity_boost: {}
---

# CIS Red Hat OpenShift Container Platform Benchmark v1.9.0 - Control 4.1.4

## Profile Applicability

- **Level:** 1

## 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 Procedure

In OpenShift 4, the `kube-proxy` runs within the `sdn` pods, which copies the `kubeconfig` from a configmap to the container at `/tmp/kubeconfig`, with root:root ownership.

Run the following command:

```bash
for i in $(oc get pods -n openshift-sdn -l app=sdn -oname)
do
    oc exec -n openshift-sdn $i -- \
      stat -Lc %U:%G /config/kube-proxy-config.yaml
done
```

Verify that the `kube-proxy-config.yaml` file has ownership root:root.

## Remediation

None required. The configuration is managed by OpenShift operators.

## Default Value

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

## References

1. https://docs.openshift.com/container-platform/4.5/networking/openshift_sdn/configuring-kube-proxy.html
2. https://kubernetes.io/docs/reference/command-line-tools-reference/kube-proxy/

## CIS Controls

| Controls Version | Control                                                                   | IG 1 | IG 2 | IG 3 |
| ---------------- | ------------------------------------------------------------------------- | ---- | ---- | ---- |
| v8               | 5.4 Restrict Administrator Privileges to Dedicated Administrator Accounts | \*   | \*   | \*   |
| v7               | 4.3 Ensure the Use of Dedicated Administrative Accounts                   | \*   | \*   | \*   |

## MITRE ATT&CK Mappings

| Techniques / Sub-techniques | Tactics        | Mitigations |
| --------------------------- | -------------- | ----------- |
| T1083, T1222                | TA0005, TA0007 | M1026       |

## Profile

**Level 1** (Manual)