USN-3299-1: Firefox update

25 May 2017

firefox update

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 17.04
  • Ubuntu 16.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS


Firefox was updated to a new version.

Software Description

  • firefox - Mozilla Open Source web browser


Some security information preloaded in Firefox was due to expire before the next scheduled release. This update bumps the expiration times.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.04
firefox - 53.0.3+build1-0ubuntu0.17.04.2
Ubuntu 16.10
firefox - 53.0.3+build1-0ubuntu0.16.10.2
Ubuntu 16.04 LTS
firefox - 53.0.3+build1-0ubuntu0.16.04.2
Ubuntu 14.04 LTS
firefox - 53.0.3+build1-0ubuntu0.14.04.2

To update your system, please follow these instructions:

After a standard system update you need to restart Firefox to make all the necessary changes.