cis-ocp-v180-4.1.4

DevOps & Security

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

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CIS Red Hat OpenShift Container Platform Benchmark v1.8.0 - 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:

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

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)