CVEvulnerability

CVE-2021-3636

4.6 MEDIUM Published 2021-07-30 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-07-30
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.6 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CVSS 2.0 ([email protected])
4.1 MEDIUM — AV:A/AC:L/Au:S/C:P/I:P/A:N
Weaknesses
CWE-287, CWE-295

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 configurations

• redhat openshift (< 4.8)

Related

Weakness · CWE (2)

  • CWE-287 Improper Authentication weakness
  • CWE-295 Improper Certificate Validation weakness

References