Provide references for CVE-2011-4593.
Where can I find more information about CVE-2011-4593?
References are available at: https://bugzilla.redhat.com/show_bug.cgi?id=761248, http://git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=e94113a859015a4a80b9397957b8fc4044e2951f, http://moodle.org/mod/forum/discuss.php?d=191762.