USN-2571-1: Firefox vulnerability

24 April 2015

firefox vulnerability

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

  • Ubuntu 15.04
  • Ubuntu 14.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


Firefox could be made to crash or run programs as your login if it opened a malicious website.

Software Description

  • firefox - Mozilla Open Source web browser


Robert Kaiser discovered a use-after-free during plugin initialization in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash or execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-2706)

Update instructions

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

Ubuntu 15.04
firefox - 37.0.2+build1-0ubuntu0.15.04.1
Ubuntu 14.10
firefox - 37.0.2+build1-0ubuntu0.14.10.1
Ubuntu 14.04 LTS
firefox - 37.0.2+build1-0ubuntu0.14.04.1
Ubuntu 12.04 LTS
firefox - 37.0.2+build1-0ubuntu0.12.04.1

To update your system, please follow these instructions:

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