Debian DSA-2561-1 Warning: libtiff Memory Corruption Risk

It was discovered that a buffer overflow in libtiff's parsing of files
using PixarLog compression could lead to the execution of arbitrary
code.

For the stable distribution (squeeze), this problem has been fixed in
version 3.9.4-5+squeeze6.

For the testing distribution (wheezy) and the unstable distribution
sid), this problem has been fixed in version 3.9.6-9 of the tiff3
source package and in version 4.0.2-4 of the tiff source package.

We recommend that you upgrade your tiff packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/