USN-1631-1: LibTIFF vulnerabilities

Ubuntu Security Notice USN-1631-1

15th November, 2012

tiff vulnerabilities

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

  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 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

It was discovered that LibTIFF incorrectly handled certain malformed images
using the PixarLog compression format. 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. (CVE-2012-4447)

Huzaifa S. Sidhpurwala discovered that the ppm2tiff tool incorrectly
handled certain malformed PPM images. If a user or automated system were
tricked into opening a specially crafted PPM image, a remote attacker could
crash the application, leading to a denial of service, or possibly execute
arbitrary code with user privileges. (CVE-2012-4564)

Update instructions

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

Ubuntu 12.10:
libtiff5 4.0.2-1ubuntu2.1
Ubuntu 12.04 LTS:
libtiff4 3.9.5-2ubuntu1.3
Ubuntu 11.10:
libtiff4 3.9.5-1ubuntu1.4
Ubuntu 10.04 LTS:
libtiff4 3.9.2-2ubuntu0.11
Ubuntu 8.04 LTS:
libtiff4 3.8.2-7ubuntu3.14

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2012-4447, CVE-2012-4564