Applications using libtiff can trigger buffer overflows through
TIFFGetField() when processing TIFF images with unknown tags.
For Debian 7 Wheezy, these problems have been fixed in version
3.9.6-11+deb7u2.
We recommend that you upgrade your tiff3 packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: <https://wiki.debian.org/LTS>