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openshift: Injected service-ca.crt incorrectly contains additional internal CAs

🗓️ 27 Jul 2021 22:36:55Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 3 Views

OpenShift before 4.8 injects service-ca.crt with extra internal CAs, risking impersonation.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
ibm		Security Bulletin: Red Hat OpenShift on IBM Cloud is affected by an OpenShift security vulnerability (CVE-2021-3636)
17 Nov 202115:55
–ibm
attackerkb		CVE-2021-3636
30 Jul 202120:15
–attackerkb
bdu_fstec		The vulnerability of the OpenShift container application platform, related to errors in verifying certificate authenticity, allows a perpetrator to disguise themselves as a reliable service within the cluster.
9 Aug 202100:00
–bdu_fstec
cnnvd		Red Hat OpenShift 授权问题漏洞
14 Jul 202100:00
–cnnvd
cnvd		Red Hat OpenShift has unexplained holes
15 Jul 202100:00
–cnvd
cve		CVE-2021-3636
30 Jul 202119:27
–cve
cvelist		CVE-2021-3636
30 Jul 202119:27
–cvelist
euvd		EUVD-2021-26937
7 Oct 202500:30
–euvd
mscve		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.
15 Apr 202407:00
–mscve
nvd		CVE-2021-3636
30 Jul 202120:15
–nvd
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7x86_64openshift-hyperkube4.8.0-202107161820.p0.git.051ac4f.assembly.stream.el7openshift-hyperkube-4.8.0-202107161820.p0.git.051ac4f.assembly.stream.el7.x86_64.rpm
Red Hat Enterprise Linux8ppc64leopenshift-hyperkube4.8.0-202107161820.p0.git.051ac4f.assembly.stream.el8openshift-hyperkube-4.8.0-202107161820.p0.git.051ac4f.assembly.stream.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xopenshift-hyperkube4.8.0-202107161820.p0.git.051ac4f.assembly.stream.el8openshift-hyperkube-4.8.0-202107161820.p0.git.051ac4f.assembly.stream.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64openshift-hyperkube4.8.0-202107161820.p0.git.051ac4f.assembly.stream.el8openshift-hyperkube-4.8.0-202107161820.p0.git.051ac4f.assembly.stream.el8.x86_64.rpm

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28 Jun 2026 08:51Current
5.7Medium risk
Vulners AI Score5.7
CVSS 24.1
CVSS 3.14.6
EPSS0.00284
CWE-295
OpenShiftservice certificate authorityextra internal authoritiesin cluster servicesimpersonation risk
3