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Ubuntu Security Notice USN-1402-1

Ubuntu Security Notice USN-1402-1
Posted Mar 23, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1402-1 - It was discovered that libpng did not properly process compressed chunks. 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.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2011-3045
SHA-256 | e84d90e1c69359be1947a51a2d22c92b27e8318bec589093735d640f38245bf1

Ubuntu Security Notice USN-1402-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1402-1
March 22, 2012

libpng vulnerability
============================================================================

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

- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

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

Software Description:
- libpng: PNG (Portable Network Graphics) file library

Details:

It was discovered that libpng did not properly process compressed chunks.
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.

Update instructions:

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

Ubuntu 11.10:
libpng12-0 1.2.46-3ubuntu1.2

Ubuntu 11.04:
libpng12-0 1.2.44-1ubuntu3.3

Ubuntu 10.10:
libpng12-0 1.2.44-1ubuntu0.3

Ubuntu 10.04 LTS:
libpng12-0 1.2.42-1ubuntu2.4

Ubuntu 8.04 LTS:
libpng12-0 1.2.15~beta5-3ubuntu0.6

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

References:
http://www.ubuntu.com/usn/usn-1402-1
CVE-2011-3045

Package Information:
https://launchpad.net/ubuntu/+source/libpng/1.2.46-3ubuntu1.2
https://launchpad.net/ubuntu/+source/libpng/1.2.44-1ubuntu3.3
https://launchpad.net/ubuntu/+source/libpng/1.2.44-1ubuntu0.3
https://launchpad.net/ubuntu/+source/libpng/1.2.42-1ubuntu2.4
https://launchpad.net/ubuntu/+source/libpng/1.2.15~beta5-3ubuntu0.6
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