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.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1796
Reference (s):
- BID:75370
- URL: http://www.securityfocus.com/bid/75370
- https://shibboleth.net/community/advisories/secadv_20150225.txt
- REDHAT:RHSA-2015:1176
- URL: http://rhn.redhat.com/errata/RHSA-2015-1176.html