Thunderbird, Firefox ESR and Firefox are vulnerable to use-after-free vulnerability. A remote unauthenticated attacker could cause a system hang by exploiting the vulnerable component DOM Node Handler
when script uses mutation events to append DOM nodes.
www.securityfocus.com/bid/104560
www.securitytracker.com/id/1041193
access.redhat.com/errata/RHSA-2018:2112
access.redhat.com/errata/RHSA-2018:2113
access.redhat.com/errata/RHSA-2018:2251
access.redhat.com/errata/RHSA-2018:2252
access.redhat.com/security/updates/classification/#critical
bugzilla.mozilla.org/show_bug.cgi?id=1464784
lists.debian.org/debian-lts-announce/2018/06/msg00014.html
lists.debian.org/debian-lts-announce/2018/07/msg00013.html
security.gentoo.org/glsa/201810-01
security.gentoo.org/glsa/201811-13
usn.ubuntu.com/3705-1/
usn.ubuntu.com/3714-1/
www.debian.org/security/2018/dsa-4235
www.debian.org/security/2018/dsa-4244
www.mozilla.org/en-US/security/advisories/mfsa2018-16/
www.mozilla.org/security/advisories/mfsa2018-15/
www.mozilla.org/security/advisories/mfsa2018-16/
www.mozilla.org/security/advisories/mfsa2018-17/
www.mozilla.org/security/advisories/mfsa2018-18/
www.mozilla.org/security/advisories/mfsa2018-19/