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CVE-2017-7801

Published: 10 August 2017

A use-after-free vulnerability can occur while re-computing layout for a "marquee" element during window resizing where the updated style object is freed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

Priority

Medium

CVSS 3 base score: 9.8

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
Upstream
Released (55.0)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (55.0.2+build1-0ubuntu4)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (55.0.1+build2-0ubuntu0.16.04.2)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [55.0.1+build2-0ubuntu0.14.04.2])
mozjs38
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(code not present)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

thunderbird
Launchpad, Ubuntu, Debian
Upstream
Released (52.3.0)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (1:52.4.0+build1-0ubuntu2)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (1:52.3.0+build1-0ubuntu0.16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [1:52.3.0+build1-0ubuntu0.14.04.1])