Mozilla Firefox is vulnerable to use-after-free vulnerability. This occurs when flushing and resizing layout because the “PressShell” object has been freed while still in use which results in a potentially exploitable crash during these operations.
www.securityfocus.com/bid/101832
www.securitytracker.com/id/1039803
access.redhat.com/errata/RHSA-2017:3247
access.redhat.com/errata/RHSA-2017:3372
access.redhat.com/security/updates/classification/#critical
bugzilla.mozilla.org/show_bug.cgi?id=1406750
bugzilla.mozilla.org/show_bug.cgi?id=1412252
lists.debian.org/debian-lts-announce/2017/11/msg00018.html
lists.debian.org/debian-lts-announce/2017/12/msg00001.html
www.debian.org/security/2017/dsa-4035
www.debian.org/security/2017/dsa-4061
www.debian.org/security/2017/dsa-4075
www.mozilla.org/en-US/security/advisories/mfsa2017-25/
www.mozilla.org/security/advisories/mfsa2017-24/
www.mozilla.org/security/advisories/mfsa2017-25/
www.mozilla.org/security/advisories/mfsa2017-26/