Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4 and Thunderbird < 45.4 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
https://www.mozilla.org/security/advisories/mfsa2016-88/
https://www.mozilla.org/security/advisories/mfsa2016-86/
https://security.gentoo.org/glsa/201701-15
https://bugzilla.mozilla.org/show_bug.cgi?id=1294407
https://bugzilla.mozilla.org/show_bug.cgi?id=1294095
https://bugzilla.mozilla.org/show_bug.cgi?id=1293347
https://bugzilla.mozilla.org/show_bug.cgi?id=1289280
https://bugzilla.mozilla.org/show_bug.cgi?id=1288780
https://bugzilla.mozilla.org/show_bug.cgi?id=1288588
https://bugzilla.mozilla.org/show_bug.cgi?id=1288555
https://bugzilla.mozilla.org/show_bug.cgi?id=1287204
https://bugzilla.mozilla.org/show_bug.cgi?id=1277213
http://www.securitytracker.com/id/1036852
http://www.securityfocus.com/bid/93049
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
http://www.mozilla.org/security/announce/2016/mfsa2016-85.html
http://www.debian.org/security/2016/dsa-3690
http://www.debian.org/security/2016/dsa-3674