A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.
www.securityfocus.com/bid/105460
www.securitytracker.com/id/1041770
access.redhat.com/errata/RHSA-2018:2881
access.redhat.com/errata/RHSA-2018:2884
bugzilla.mozilla.org/show_bug.cgi?id=1493900
security.gentoo.org/glsa/201810-01
usn.ubuntu.com/3778-1/
www.debian.org/security/2018/dsa-4310
www.mozilla.org/security/advisories/mfsa2018-24/