CVE-2018-5116

Published: 23 January 2018

WebExtensions with the "ActiveTab" permission are able to access frames hosted within the active tab even if the frames are cross-origin. Malicious extensions can inject frames from arbitrary origins into the loaded page and then interact with them, bypassing same-origin user expectations with this permission. This vulnerability affects Firefox < 58.

Priority

Medium

CVSS 3 base score: 9.8

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
Upstream
Released (58.0)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (59.0.1+build1-0ubuntu1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (58.0+build6-0ubuntu0.16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [58.0+build6-0ubuntu0.14.04.1])