Ubuntu Security Notice USN-639-1
2nd September, 2008
tiff vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 8.04 LTS
- Ubuntu 7.10
- Ubuntu 7.04
- Ubuntu 6.06 LTS
Software description
- tiff
Details
Drew Yao discovered that the TIFF library did not correctly validate LZW
compressed TIFF images. If a user or automated system were tricked into
processing a malicious image, a remote attacker could execute arbitrary
code or cause an application linked against libtiff to crash, leading
to a denial of service.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 8.04 LTS:
- libtiff4 3.8.2-7ubuntu3.1
- Ubuntu 7.10:
- libtiff4 3.8.2-7ubuntu2.1
- Ubuntu 7.04:
- libtiff4 3.8.2-6ubuntu1
- Ubuntu 6.06 LTS:
- libtiff4 3.7.4-1ubuntu3.3
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the
necessary changes.