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.