Moodle has a database activity export permission issue where the export function of the database activity module exports all entries even those from groups the user does not belong to
https://security-tracker.debian.org/tracker/CVE-2012-1155
https://moodle.org/mod/forum/discuss.php?d=198621
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-1155
http://lists.fedoraproject.org/pipermail/package-announce/2012-May/081047.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-May/080712.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-April/078210.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-April/078209.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-April/077635.html