Cis Ocp Vm V100 1 6

CIS 1.6 — Restrict patching operations in the annotations for Hyperconverged

Profile Applicability

• Level 1

Description

The kubevirt-hyperconverged (HCO) object provides a mechanism to customize OpenShift Virtualization components through the control of patching operations. Although this approach itself does not inherently introduce security risks, enabling experimental features may have unintended consequences and might not be officially supported. It is essential to weigh the benefits of using these options against any potential security implications before proceeding.

Rationale

Cloud administrators should not patch OpenShift Virtualization objects, but rather configure the OpenShift Virtualization options available in HCO.

Impact

Restrictions to patching operations may prevent the use of experimental features not yet supported or considered insecure.

Audit Procedure

Ensure there are no patching operations for the Openshift Virtualization component:

$ oc get hyperconverged kubevirt-hyperconverged -n openshift-cnv -o jsonpath='{.metadata.annotations}'| jq '.|has("kubevirt.kubevirt.io/jsonpatch")'

$ oc get hyperconverged kubevirt-hyperconverged -n openshift-cnv -o jsonpath='{.metadata.annotations}'| jq '.|has("containerizeddataimporter.kubevirt.io/jsonpatch")'

$ oc get hyperconverged kubevirt-hyperconverged -n openshift-cnv -o jsonpath='{.metadata.annotations}'| jq '.|has("networkaddonsconfigs.kubevirt.io/jsonpatch")'

$ oc get hyperconverged kubevirt-hyperconverged -n openshift-cnv -o jsonpath='{.metadata.annotations}'| jq '.|has("ssp.kubevirt.io/jsonpatch")'

All the commands should return an empty string.

Remediation

The annotations should be removed from the Hyperconverged. For example, by directly editing the object with oc edit hyperconverged kubevirt-hyperconverged -n openshift-cnv or by removing the annotation with the annotate command. Example:

$ oc annotate --overwrite -n openshift-cnv hco kubevirt-hyperconverged 'containerizeddataimporter.kubevirt.io/jsonpatch-'

Default Value

None of the annotations should be set and the result of the commands should always be false.

References

• CIS Redhat OpenShift Virtual Machine Extension Benchmark v1.0.0, Section 1.6

CIS Controls

MITRE ATT&CK Mappings

Profile

• Level 1 - OpenShift Virtualization