It was found in OpenShift before version 4.8 that the generated certificate for the in-cluster Service CA incorrectly included additional certificates. The Service CA is automatically mounted into all pods allowing them to safely connect to trusted in-cluster services that present certificates signed by the trusted Service CA. The incorrect inclusion of additional CAs in this certificate would allow an attacker that compromises any of the additional CAs to masquerade as a trusted in-cluster service.

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PT-2021-3729 · Red Hat · Openshift

Name of the Vulnerable Software and Affected Versions: OpenShift versions prior to 4.8 Description: The issue is related to the generated certificate for the in-cluster Service CA in OpenShift, which incorrectly includes additional certificates. This allows an attacker that compromises any of the...