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Ubuntu Security Notice USN-1367-3

Ubuntu Security Notice USN-1367-3
Posted Feb 18, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1367-3 - USN-1367-1 fixed vulnerabilities in libpng. This provides the corresponding update for Thunderbird. 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. Various other issues were also addressed.

tags | advisory, denial of service, vulnerability
systems | linux, ubuntu
advisories | CVE-2011-3026, CVE-2011-3026
SHA-256 | 6966e3d1946b7a96f0eca6511609d84fb0c94cafc8206a00eaf8b00ac8ded35d

Ubuntu Security Notice USN-1367-3

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1367-3
February 17, 2012

thunderbird vulnerability
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS

Summary:

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

Software Description:
- thunderbird: Mozilla Open Source mail and newsgroup client

Details:

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

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 11.04:
thunderbird 3.1.19+build1+nobinonly-0ubuntu0.11.04.1

Ubuntu 10.10:
thunderbird 3.1.19+build1+nobinonly-0ubuntu0.10.10.1

Ubuntu 10.04 LTS:
thunderbird 3.1.19+build1+nobinonly-0ubuntu0.10.04.1

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

References:
http://www.ubuntu.com/usn/usn-1367-3
http://www.ubuntu.com/usn/usn-1367-1
CVE-2011-3026, https://launchpad.net/bugs/933399

Package Information:
https://launchpad.net/ubuntu/+source/thunderbird/3.1.19+build1+nobinonly-0ubuntu0.11.04.1
https://launchpad.net/ubuntu/+source/thunderbird/3.1.19+build1+nobinonly-0ubuntu0.10.10.1
https://launchpad.net/ubuntu/+source/thunderbird/3.1.19+build1+nobinonly-0ubuntu0.10.04.1
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