Mozilla Firefox before 30.0 and Thunderbird through 24.6 on OS X do not ensure visibility of the cursor after interaction with a Flash object and a DIV element, which makes it easier for remote attackers to conduct clickjacking attacks via JavaScript code that produces a fake cursor image.
https://security.gentoo.org/glsa/201504-01
https://bugzilla.mozilla.org/show_bug.cgi?id=995603
http://www.securitytracker.com/id/1030388
http://www.securityfocus.com/bid/67967
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://www.mozilla.org/security/announce/2014/mfsa2014-50.html
http://secunia.com/advisories/59486
http://secunia.com/advisories/59387
http://secunia.com/advisories/59171
http://lists.opensuse.org/opensuse-updates/2014-07/msg00001.html
http://lists.opensuse.org/opensuse-updates/2014-06/msg00040.html