tiff - buffer overflow

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.