USN-2538-1: Firefox vulnerabilities

22 March 2015

firefox vulnerabilities

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

  • 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


A flaw was discovered in the implementation of typed array bounds checking in the Javascript just-in-time compilation. If a user were tricked in to opening a specially crafted website, an attacked could exploit this to execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2015-0817)

Mariusz Mlynski discovered a flaw in the processing of SVG format content navigation. If a user were tricked in to opening a specially crafted website, an attacker could exploit this to run arbitrary script in a privileged context. (CVE-2015-0818)

Update instructions

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

Ubuntu 14.10
firefox - 36.0.4+build1-0ubuntu0.14.10.1
Ubuntu 14.04 LTS
firefox - 36.0.4+build1-0ubuntu0.14.04.1
Ubuntu 12.04 LTS
firefox - 36.0.4+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.