USN-1367-2: Firefox vulnerability

Releases

• Ubuntu 11.10
• Ubuntu 11.04
• Ubuntu 10.10
• Ubuntu 10.04

Packages

• 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)

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

• 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.

References

• CVE-2011-3026
• https://launchpad.net/bugs/933293

Related notices

• USN-1367-1: libpng, libpng12-0
• USN-1367-3: thunderbird
• USN-1367-4: xulrunner-1.9.2