Vulnerability · Published Jul 30, 2021 · Assigned by redhat
CVE-2021-3636
Medium 4.6
In plain English
A medium-severity improper certificate validation in openshift. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
Weakness: CWE-295
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1978621 x_refsource_MISC