Ubuntu 11.10: USN-1500-1 Critical: OpenSSL Security Update

ubuntu

March 22, 2012

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

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.

Topics Covered

security advisory denial of service Ubuntu moderate severity libpng

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.