Ubuntu 11.10: USN-1367-2 Moderate: Firefox Code Execution Risk

ubuntu

February 17, 2012

Firefox could be made to crash or run programs as your login if it opened a specially crafted file.

Summary

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

specially crafted file.

Software Description:

- firefox: Mozilla Open Source web browser

Details:

USN-1367-1 fixed vulnerabilities in libpng. This provides the corresponding

update for Firefox.

Original advisory details:

Jueri Aedla discovered that libpng did not properly verify the size used

when allocating memory during chunk decompression. If a user or automated

system using libpng were tricked into opening a specially crafted image,

an attacker could exploit this to cause a denial of service or execute

code with the privileges of the user invoking the program. (CVE-2011-3026)

Topics Covered

security advisory denial of service software update code execution Ubuntu Firefox

Update Instructions

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

Ubuntu 11.10:
  firefox                         10.0.2+build1-0ubuntu0.11.10.1

Ubuntu 11.04:
  firefox                         10.0.2+build1-0ubuntu0.11.04.1

Ubuntu 10.10:
  firefox                         10.0.2+build1-0ubuntu0.10.10.1

Ubuntu 10.04 LTS:
  firefox                         10.0.2+build1-0ubuntu0.10.04.1

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