CVE-2018-10894: Improper Certificate Validation

May 13, 2022 (updated July 21, 2023)

It was found that SAML authentication in Keycloak 3.4.3.Final incorrectly authenticated expired certificates. A malicious user could use this to access unauthorized data or possibly conduct further attacks.

References

access.redhat.com/errata/RHSA-2018:3592
access.redhat.com/errata/RHSA-2018:3593
access.redhat.com/errata/RHSA-2018:3595
access.redhat.com/errata/RHSA-2019:0877
bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10894
github.com/advisories/GHSA-xvv8-8wh9-9fh2
nvd.nist.gov/vuln/detail/CVE-2018-10894

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