Mozilla Firefox before 48.0, Firefox ESR < 45.4 and Thunderbird < 45.4 allow remote attackers to obtain sensitive information about the previously retrieved page via Resource Timing API calls.
lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html
lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html
rhn.redhat.com/errata/RHSA-2016-1912.html
www.debian.org/security/2016/dsa-3674
www.mozilla.org/security/announce/2016/mfsa2016-84.html
www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
www.securityfocus.com/bid/92260
www.securitytracker.com/id/1036508
www.ubuntu.com/usn/USN-3044-1
bugzilla.mozilla.org/show_bug.cgi?id=1254688
security.gentoo.org/glsa/201701-15
www.mozilla.org/security/advisories/mfsa2016-86/
www.mozilla.org/security/advisories/mfsa2016-88/