[Trisquel-security] [USN-1417-1] libpng vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Thu Apr 5 20:32:56 CEST 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:

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: This is a digitally signed message part
URL: <http://listas.trisquel.info/pipermail/trisquel-security/attachments/20120405/182f37d1/attachment.pgp>
-------------- next part --------------
ubuntu-security-announce mailing list
ubuntu-security-announce at lists.ubuntu.com
Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce

More information about the Trisquel-security mailing list