Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 improperly control the ability of a web worker to create a WebSocket object, which allows remote attackers to bypass intended mixed-content restrictions via crafted JavaScript code.Referenceshttps://bugzilla.mozilla.org/show_bug.cgi?id=1204269http://www.securitytracker.com/id/1034069http://www.debian.org/security/2015/dsa-3410http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.htmlhttps://security.gentoo.org/glsa/201512-10http://www.securityfocus.com/bid/77411http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00021.htmlhttp://www.mozilla.org/security/announce/2015/mfsa2015-132.htmlhttp://lists.opensuse.org/opensuse-updates/2015-12/msg00037.htmlhttp://rhn.redhat.com/errata/RHSA-2015-2519.htmlhttp://www.ubuntu.com/usn/USN-2785-1http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00013.htmlhttp://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlhttp://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.htmlhttp://rhn.redhat.com/errata/RHSA-2015-1982.htmlhttp://www.ubuntu.com/usn/USN-2819-1http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00015.htmlhttp://www.debian.org/security/2015/dsa-3393http://lists.opensuse.org/opensuse-updates/2015-12/msg00049.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-11/msg00020.html