Provide references for CVE-2013-4521.
Where can I find more information about CVE-2013-4521?
References are available at: https://bugzilla.redhat.com/show_bug.cgi?id=1027052, http://doc.nuxeo.com/display/public/ADMINDOC58/Nuxeo+Security+Hotfixes, https://github.com/nuxeo/richfaces/commit/6cbad2a6dcb70d3e33a6ce5879b1a3ad79eb1aec.