cis-ocp-vm-v100-1-5

DevOps & Security

Enforce the use of trusted registries using TLS (Automated)

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CIS 1.5 — Enforce the use of trusted registries using TLS

Profile Applicability

Level 1

Description

Transport Layer Security (TLS) is a cryptographic protocol used in this context to protect data in transit. Restricting operations to the use of trusted registries ensures the use of approved container images.

Rationale

By only pulling container images from trusted registries, organizations can reduce the risk of introducing unknown vulnerabilities or malicious software into their systems. This helps ensure that their applications and systems remain secure and stable.

Impact

Enforcing trusted container image registries limits which container images users are able to deploy and manage. This restriction may also limit the use of some platforms and/or tools.

Audit Procedure

Use the following command to view any insecure registries:

$ oc get hyperconverged kubevirt-hyperconverged -n openshift-cnv -ojsonpath='{.spec.storageImport.insecureRegistries}'

Verify no registries are returned.

Remediation

Do not allow connections to insecure registries from hyperconverged resources. The cluster administrator can remove any insecure registry:

$ oc patch hyperconverged kubevirt-hyperconverged -n openshift-cnv --type='json' -p='[
{"op": "remove", "path": "/spec/storageImport/insecureRegistries"},
]'

Default Value

TLS is enabled by default. No insecure registries are configured or enabled by default. The result of the command should be empty.

References

CIS Redhat OpenShift Virtual Machine Extension Benchmark v1.0.0, Section 1.5

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v8	3.10 Encrypt Sensitive Data in Transit	N	Y	Y
v7	14.4 Encrypt All Sensitive Information in Transit	N	Y	Y

MITRE ATT&CK Mappings

Tactic	Technique
Initial Access	T1195 Supply Chain Compromise
Credential Access	T1040 Network Sniffing

Profile

Level 1 - OpenShift Virtualization