USN-4020-1: Firefox vulnerability

19 June 2019

firefox vulnerability

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

  • Ubuntu 19.04
  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS

Summary

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

Details

A type confusion bug was discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could exploit this by causing a denial of service, or executing arbitrary code.

Update instructions

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

Ubuntu 19.04
firefox - 67.0.3+build1-0ubuntu0.19.04.1
Ubuntu 18.10
firefox - 67.0.3+build1-0ubuntu0.18.10.1
Ubuntu 18.04 LTS
firefox - 67.0.3+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS
firefox - 67.0.3+build1-0ubuntu0.16.04.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References