cis-ocp-v160-1-1-16

name	cis-ocp-v160-1.1.16
description	Ensure that the Scheduler kubeconfig file ownership is set to root:root (Manual)
category	cis-openshift
version	1.6.0
author	cyberstrike-official
tags	["cis","openshift","kubernetes","redhat","control-plane","master-node-config-files","scheduler","kubeconfig","file-ownership"]
cis_id	1.1.16
cis_benchmark	CIS Red Hat OpenShift Container Platform Benchmark v1.6.0
tech_stack	["kubernetes","openshift","redhat"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

CIS Red Hat OpenShift Container Platform Benchmark v1.6.0 - Control 1.1.16

Profile Applicability

• Level: 1

Description

Ensure that the kubeconfig file ownership is set to root:root.

Rationale

You should set the kubeconfig file ownership to maintain the integrity of the file. The file should be owned by root:root.

Impact

None.

Audit Procedure

The kubeconfig file for kube-scheduler is stored in the ConfigMap scheduler-kubeconfig in the namespace openshift-kube-scheduler. The file kubeconfig is referenced in the pod via hostpath and is stored in /etc/kubernetes/static-pod-resources/configmaps/scheduler-kubeconfig/kubeconfig with ownership root:root. Run the following command.

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/configmaps/scheduler-kubeconfig/kubeconfig
 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, scheduler-kubeconfig/kubeconfig file ownership is set to root:root.

References

1. https://docs.openshift.com/container-platform/latest/operators/operator-reference.html#cluster-kube-scheduler-operator_red-hat-operators
2. https://docs.openshift.com/container-platform/latest/nodes/scheduling/nodes-scheduler-about.html
3. https://kubernetes.io/docs/concepts/scheduling-eviction/kube-scheduler/