Mozilla Firefox before 47.0 allows remote attackers to spoof permission notifications via a crafted web site that rapidly triggers permission requests, as demonstrated by the microphone permission or the geolocation permission.
https://bugzilla.mozilla.org/show_bug.cgi?id=1248329
http://www.ubuntu.com/usn/USN-2993-1
http://www.securitytracker.com/id/1036057
http://www.mozilla.org/security/announce/2016/mfsa2016-57.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00014.html