Cis Ocp V170 1.1.6

---
name: cis-ocp-v170-1.1.6
description: "Ensure that the scheduler pod specification file ownership is set to root:root (Manual)"
category: cis-openshift
version: "1.7.0"
author: cyberstrike-official
tags: [cis, openshift, kubernetes, redhat, control-plane, master-node, config-files]
cis_id: "1.1.6"
cis_benchmark: "CIS Red Hat OpenShift Container Platform Benchmark v1.7.0"
tech_stack: [kubernetes, openshift, redhat]
cwe_ids: []
chains_with: []
prerequisites: []
severity_boost: {}
---

# CIS Red Hat OpenShift Container Platform Benchmark v1.7.0 - Control 1.1.6

## Profile Applicability

- **Level:** 1

## Description

Ensure that the scheduler pod specification file ownership is set to `root:root`.

## Rationale

The scheduler pod specification file controls various parameters that set the behavior of the `kube-scheduler` service in the master 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-scheduler is deployed as a static pod and its pod specification file is created on control plane nodes at /etc/kubernetes/manifests/kube-scheduler-pod.yaml. It is mounted via hostpath to the kube-controller-manager pods via /etc/kubernetes/static-pod-resources/kube-scheduler-pod.yaml with ownership `root:root`.

Run the following command.

```bash
#Verify openshift-kube-scheduler ownership
for i in $(oc get pods -n openshift-kube-scheduler -l app=openshift-kube-scheduler -o name)
 do
  oc exec -n openshift-kube-scheduler $i -- \
  stat -c %U:%G /etc/kubernetes/static-pod-resources/kube-scheduler-pod.yaml
 done
```

Verify that the ownership is set to `root:root`.

## Remediation

No remediation required; file permissions are managed by the operator.

## Default Value

By default, in OpenShift 4, `kube-scheduler-pod.yaml` file ownership is set to `root:root`.

## References

1. https://docs.openshift.com/container-platform/latest/architecture/control-plane.html#defining-masters_control-plane
2. https://docs.openshift.com/container-platform/latest/operators/operator-reference.html#cluster-kube-scheduler-operator_red-hat-operators
3. https://docs.openshift.com/container-platform/latest/nodes/scheduling/nodes-scheduler-about.html
4. https://kubernetes.io/docs/reference/command-line-tools-reference/kube-scheduler/

## 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)