CVE-2017-7843

Published: 11 June 2018

When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely. IndexedDB should not be available in Private Browsing mode and this stored data will persist across multiple private browsing mode sessions because it is not cleared when exiting. This vulnerability affects Firefox ESR < 52.5.2 and Firefox < 57.0.1.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
Upstream
Released (57.0.1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (57.0.1+build2-0ubuntu1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (57.0.1+build2-0ubuntu0.16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [57.0.1+build2-0ubuntu0.14.04.1])