Shibboleth SP software crashes on well-formed but invalid XML.
The Service Provider software contains a code path with an uncaught exception that can be triggered by an unauthenticated attacker by supplying well-formed but schema-invalid XML in the form of SAML metadata or SAML protocol messages. The result is a crash and so causes a denial of service. You must rebuild opensaml and shibboleth with xmltooling-1.5.5 or later. The easiest way to do so is to update the whole chain including shibboleth-2.5.5 an opensaml2.5.5. URL: http://shibboleth.net/community/advisories/secadv_20150721.txt Security: CVE-2015-2684 Approved by: ports-secteam
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