Mozilla Firefox before 43.0 does not properly restrict the availability of IFRAME Resource Timing API times, which allows remote attackers to bypass the Same Origin Policy and obtain sensitive information via crafted JavaScript code that leverages history.back and performance.getEntries calls, a related issue to CVE-2015-1300.
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174083.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174253.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00089.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00091.html
http://lists.opensuse.org/opensuse-updates/2015-12/msg00104.html
http://lists.opensuse.org/opensuse-updates/2016-02/msg00007.html
http://lists.opensuse.org/opensuse-updates/2016-02/msg00008.html
http://www.mozilla.org/security/announce/2015/mfsa2015-136.html
http://www.securityfocus.com/bid/79280
http://www.securitytracker.com/id/1034426
http://www.ubuntu.com/usn/USN-2833-1
https://bugzilla.mozilla.org/show_bug.cgi?id=1185256