Description
The (1) HttpResource and (2) FileBackedHttpResource implementations in Shibboleth Identity Provider (IdP) before 2.4.1 and OpenSAML Java 2.6.2 do not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
Remediation
References
http://secunia.com/advisories/60816
http://shibboleth.net/community/advisories/secadv_20140813.txt
https://bugzilla.redhat.com/show_bug.cgi?id=1131823
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