[USN-4020-1] Firefox vulnerability

Chris Coulson chris.coulson at canonical.com
Wed Jun 19 17:37:47 UTC 2019

Ubuntu Security Notice USN-4020-1
June 19, 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


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 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

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


Package Information:
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