The following tiff updates has been released for Debian GNU/Linux 7 LTS:

DLA 1346-1: tiff security update
DLA 1347-1: tiff3 security update

DLA 1346-1: tiff security update

Package : tiff
Version : 4.0.2-6+deb7u19
CVE ID : CVE-2018-7456
Debian Bug : 891288

A NULL Pointer Dereference was discovered in the TIFFPrintDirectory
function (tif_print.c) when using the tiffinfo tool to print crafted
TIFF information. This vulnerability could be leveraged by remote
attackers to cause a crash of the application.

For Debian 7 "Wheezy", these problems have been fixed in version
4.0.2-6+deb7u19.

We recommend that you upgrade your tiff 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

DLA 1347-1: tiff3 security update

Package : tiff3
Version : 3.9.6-11+deb7u10
CVE ID : CVE-2018-7456
Debian Bug : 891288

A NULL Pointer Dereference was discovered in the TIFFPrintDirectory
function (tif_print.c) when using the tiffinfo tool to print crafted
TIFF information. This vulnerability could be leveraged by remote
attackers to cause a crash of the application.

For Debian 7 "Wheezy", these problems have been fixed in version
3.9.6-11+deb7u10.

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