Description

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.

Mitigation

We recommend upgrading to a version of this component that is not vulnerable to this specific issue. If upgrading is not feasible, follow the workaround(s) stated on the reference pages.

Reference(s):
[https://wiki.shibboleth.net/confluence/display/SHIB2/20150225+Security+Advisory+Examples](https://wiki.shibboleth.net/confluence/display/SHIB2/20150225+Security+Advisory+Examples)
[https://shibboleth.net/community/advisories/secadv_20150225.txt](https://shibboleth.net/community/advisories/secadv_20150225.txt)

Related links:

• http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-1796

• https://issues.shibboleth.net/jira/browse/JXT-116

• https://shibboleth.net/community/advisories/secadv_20150225.txt

• https://wiki.shibboleth.net/confluence/display/SHIB2/20150225+Security+Advisory+Examples

• https://bugzilla.redhat.com/show_bug.cgi?id=1196619