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CVE-2017-7793

Published: 2 October 2017

A use-after-free vulnerability can occur in the Fetch API when the worker or the associated window are freed when still in use, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.

Priority

Medium

CVSS 3 base score: 9.8

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
artful
Released (56.0+build6-0ubuntu1)
bionic
Released (56.0+build6-0ubuntu1)
precise Does not exist

trusty Does not exist
(trusty was released [56.0+build6-0ubuntu0.14.04.1])
upstream
Released (56.0)
xenial
Released (56.0+build6-0ubuntu0.16.04.1)
zesty
Released (56.0+build6-0ubuntu0.17.04.1)
thunderbird
Launchpad, Ubuntu, Debian
artful
Released (1:52.4.0+build1-0ubuntu2)
bionic
Released (1:52.4.0+build1-0ubuntu2)
precise Does not exist

trusty Does not exist
(trusty was released [1:52.4.0+build1-0ubuntu0.14.04.2])
upstream
Released (52.4.0)
xenial
Released (1:52.4.0+build1-0ubuntu0.16.04.2)
zesty
Released (1:52.4.0+build1-0ubuntu0.17.04.2)