CVE-2020-6820

Published: 03 April 2020

Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.

Priority

High

CVSS 3 base score: 8.1

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
Upstream
Released (74.0.1)
Ubuntu 20.10 (Groovy Gorilla)
Released (75.0+build3-0ubuntu1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (75.0+build3-0ubuntu1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (74.0.1+build1-0ubuntu0.18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (74.0.1+build1-0ubuntu0.16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

thunderbird
Launchpad, Ubuntu, Debian
Upstream
Released (68.7.0)
Ubuntu 20.10 (Groovy Gorilla)
Released (1:68.7.0+build1-0ubuntu1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (1:68.7.0+build1-0ubuntu1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (1:68.7.0+build1-0ubuntu0.18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (1:68.7.0+build1-0ubuntu0.16.04.2)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist