=========================================================================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

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

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

References:
  https://ubuntu.com/security/notices/USN-4020-1
  CVE-2019-11707

Package Information:
 
https://launchpad.net/ubuntu/+source/firefox/67.0.3+build1-0ubuntu0.19.04.1
 
https://launchpad.net/ubuntu/+source/firefox/67.0.3+build1-0ubuntu0.18.10.1
 
https://launchpad.net/ubuntu/+source/firefox/67.0.3+build1-0ubuntu0.18.04.1
 
https://launchpad.net/ubuntu/+source/firefox/67.0.3+build1-0ubuntu0.16.04.1