Ubuntu Security Notice USN-1367-4
February 17, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.10
- Ubuntu 10.04 LTS
Xulrunner based applications could be made to crash or run programs as your
login if they opened a specially crafted file.
- xulrunner-1.9.2: Mozilla Gecko runtime environment
USN-1367-1 fixed vulnerabilities in libpng. This provides the corresponding
update for Xulrunner.
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)
The problem can be corrected by updating your system to the following
Ubuntu 10.04 LTS:
After a standard system update you need to restart any application based on
Xulrunner such as Yelp or Conkeror to make all the necessary changes.