[USN-1417-1] libpng vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Thu Apr 5 18:32:56 UTC 2012

Ubuntu Security Notice USN-1417-1
April 05, 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


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


It was discovered that libpng incorrectly handled certain memory
operations. 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                      1.2.46-3ubuntu1.3

Ubuntu 11.04:
  libpng12-0                      1.2.44-1ubuntu3.4

Ubuntu 10.10:
  libpng12-0                      1.2.44-1ubuntu0.4

Ubuntu 10.04 LTS:
  libpng12-0                      1.2.42-1ubuntu2.5

Ubuntu 8.04 LTS:
  libpng12-0                      1.2.15~beta5-3ubuntu0.7

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


Package Information:

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