============================================================================
Ubuntu Security Notice USN-2205-1
May 06, 2014

tiff vulnerabilities
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS
- Ubuntu 13.10
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

LibTIFF could be made to crash or run programs as your login if it opened a
specially crafted file.

Software Description:
- tiff: Tag Image File Format (TIFF) library

Details:

Pedro Ribeiro discovered that LibTIFF incorrectly handled certain
malformed images when using the gif2tiff tool. If a user or automated
system were tricked into opening a specially crafted GIF image, a remote
attacker could crash the application, leading to a denial of service, or
possibly execute arbitrary code with user privileges. This issue only
affected Ubuntu 10.04 LTS, Ubunu 12.04 LTS, Ubuntu 12.10 and Ubuntu 13.10.
(CVE-2013-4231)

Pedro Ribeiro discovered that LibTIFF incorrectly handled certain
malformed images when using the tiff2pdf tool. If a user or automated
system were tricked into opening a specially crafted TIFF image, a remote
attacker could crash the application, leading to a denial of service, or
possibly execute arbitrary code with user privileges. This issue only
affected Ubuntu 10.04 LTS, Ubunu 12.04 LTS, Ubuntu 12.10 and Ubuntu 13.10.
(CVE-2013-4232)

Murray McAllister discovered that LibTIFF incorrectly handled certain
malformed images when using the gif2tiff tool. If a user or automated
system were tricked into opening a specially crafted GIF image, a remote
attacker could crash the application, leading to a denial of service, or
possibly execute arbitrary code with user privileges. (CVE-2013-4243)

Huzaifa Sidhpurwala discovered that LibTIFF incorrectly handled certain
malformed images when using the gif2tiff tool. If a user or automated
system were tricked into opening a specially crafted GIF image, a remote
attacker could crash the application, leading to a denial of service, or
possibly execute arbitrary code with user privileges. This issue only
affected Ubuntu 10.04 LTS, Ubunu 12.04 LTS, Ubuntu 12.10 and Ubuntu 13.10.
(CVE-2013-4244)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.04 LTS:
  libtiff5                        4.0.3-7ubuntu0.1

Ubuntu 13.10:
  libtiff5                        4.0.2-4ubuntu3.1

Ubuntu 12.10:
  libtiff5                        4.0.2-1ubuntu2.3

Ubuntu 12.04 LTS:
  libtiff4                        3.9.5-2ubuntu1.6

Ubuntu 10.04 LTS:
  libtiff4                        3.9.2-2ubuntu0.14

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-2205-1
  CVE-2013-4231, CVE-2013-4232, CVE-2013-4243, CVE-2013-4244

Package Information:
  https://launchpad.net/ubuntu/+source/tiff/4.0.3-7ubuntu0.1
  https://launchpad.net/ubuntu/+source/tiff/4.0.2-4ubuntu3.1
  https://launchpad.net/ubuntu/+source/tiff/4.0.2-1ubuntu2.3
  https://launchpad.net/ubuntu/+source/tiff/3.9.5-2ubuntu1.6
  https://launchpad.net/ubuntu/+source/tiff/3.9.2-2ubuntu0.14