Ubuntu 16.04 LTS USN-2936-1 Critical: Firefox Application Crash Risk

ubuntu

April 27, 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, Tyson Smith, Phil Ringalda, Gary Kwong, Jesse Ruderman,

Mats Palmgren, Carsten Book, Boris Zbarsky, David Bolter, Randell Jesup,

Andrew McCreight, and Steve Fink 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 with the

privileges of the user invoking Firefox. (CVE-2016-2804, CVE-2016-2806,

CVE-2016-2807)

An invalid write was discovered when using the JavaScript .watch() method 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 w...

Read the Full Advisory

Topics Covered

security advisory code execution Ubuntu web security application crash Firefox browser exploits

Update Instructions

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

Ubuntu 16.04 LTS:
  firefox                         46.0+build5-0ubuntu0.16.04.2

Ubuntu 15.10:
  firefox                         46.0+build5-0ubuntu0.15.10.2

Ubuntu 14.04 LTS:
  firefox                         46.0+build5-0ubuntu0.14.04.2

Ubuntu 12.04 LTS:
  firefox                         46.0+build5-0ubuntu0.12.04.2

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