CVE-2015-1796: Improper Certificate Validation in Shibboleth Identity Provider and OpenSAML

May 17, 2022 (updated July 6, 2022)

The PKIX trust engines in Shibboleth Identity Provider before 2.4.4 and OpenSAML Java (OpenSAML-J) before 2.6.5 trust candidate X.509 credentials when no trusted names are available for the entityID, which allows remote attackers to impersonate an entity via a certificate issued by a shibmd:KeyAuthority trust anchor.

References

rhn.redhat.com/errata/RHSA-2015-1176.html
rhn.redhat.com/errata/RHSA-2015-1177.html
github.com/advisories/GHSA-78fq-w796-q537
nvd.nist.gov/vuln/detail/CVE-2015-1796
shibboleth.net/community/advisories/secadv_20150225.txt

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