Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Openshift | < 4.8 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1978621ExploitIssue TrackingPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=1978621ExploitIssue TrackingPatch
FAQ
What is CVE-2021-3636?
CVE-2021-3636 is a vulnerability with a CVSS score of 4.6 (MEDIUM). 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 ...
How severe is CVE-2021-3636?
CVE-2021-3636 has been rated MEDIUM with a CVSS base score of 4.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3636?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Openshift.