Ubuntu: 4032-1 Critical Security Issue with Firefox Sandbox Escape

ubuntu

June 24, 2019

A sandbox escape was discovered in Firefox.

Summary

A sandbox escape was discovered in Firefox.

Software Description:

- firefox: Mozilla Open Source web browser

Details:

It was discovered that a sandboxed child process could open arbitrary web

content in the parent process via the Prompt:Open IPC message. When

combined with another vulnerability, an attacker could potentially exploit

this to execute arbitrary code.

Topics Covered

security advisory code execution Ubuntu firefox sandbox escape 2019

Update Instructions

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

Ubuntu 19.04:
  firefox                         67.0.4+build1-0ubuntu0.19.04.1

Ubuntu 18.10:
  firefox                         67.0.4+build1-0ubuntu0.18.10.1

Ubuntu 18.04 LTS:
  firefox                         67.0.4+build1-0ubuntu0.18.04.1

Ubuntu 16.04 LTS:
  firefox                         67.0.4+build1-0ubuntu0.16.04.1

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