Ubuntu 16.04 LTS USN-2993-1 Critical Firefox Memory Issue

ubuntu

June 9, 2016

Firefox could be made to crash or run programs as your login if it opened a malicious website.

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:

Christian Holler, Gary Kwong, Jesse Ruderman, Tyson Smith, Timothy Nikkel,

Sylvestre Ledru, Julian Seward, Olli Pettay, Karl Tomlinson, Christoph

Diehl, Julian Hector, Jan de Mooij, Mats Palmgren, and Tooru Fujisawa

discovered multiple memory safety issues in Firefox. If a user were

tricked in to opening a specially crafted website, an attacker could

potentially exploit these to cause a denial of service via application

crash, or execute arbitrary code. (CVE-2016-2815, CVE-2016-2818)

A buffer overflow was discovered when parsing HTML5 fragments in some

circumstances. If a user were tricked in to opening a specially crafted

website, an attacker could potentially exploit this to cause a denial of

service via application crash, or execute arbitrary code. (CVE-2016-2819)

A use-after-free was d...

Read the Full Advisory

Topics Covered

security advisory denial of service critical firefox memory issue ubuntu

Update Instructions

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

Ubuntu 16.04 LTS:
  firefox                         47.0+build3-0ubuntu0.16.04.1

Ubuntu 15.10:
  firefox                         47.0+build3-0ubuntu0.15.10.1

Ubuntu 14.04 LTS:
  firefox                         47.0+build3-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
  firefox                         47.0+build3-0ubuntu0.12.04.1

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