CVE-2016-5284

Published: 22 September 2016

Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 rely on unintended expiration dates for Preloaded Public Key Pinning, which allows man-in-the-middle attackers to spoof add-on updates by leveraging possession of an X.509 server certificate for addons.mozilla.org signed by an arbitrary built-in Certification Authority.

Priority

Medium

CVSS 3 base score: 7.4

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
Upstream
Released (49.0)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (49.0+build4-0ubuntu0.16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [49.0+build4-0ubuntu0.14.04.1])
thunderbird
Launchpad, Ubuntu, Debian
Upstream
Released (45.4.0)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (1:45.4.0+build1-0ubuntu0.16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [1:45.4.0+build1-0ubuntu0.14.04.1])