Ubuntu Security Notice USN-986-1
20th September, 2010
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.04 LTS
- Ubuntu 9.10
- Ubuntu 9.04
- Ubuntu 8.04 LTS
- Ubuntu 6.06 LTS
bzip2 could be made to run programs as your login if it opened a specially crafted file.
- bzip2 - high-quality block-sorting file compressor - utilities
An integer overflow was discovered in bzip2. If a user or automated system
were tricked into decompressing a crafted bz2 file, an attacker could cause
bzip2 or any application linked against libbz2 to crash or possibly execute
code as the user running the program.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 10.04 LTS:
- bzip2 1.0.5-4ubuntu0.1
- libbz2-1.0 1.0.5-4ubuntu0.1
- Ubuntu 9.10:
- bzip2 1.0.5-3ubuntu0.1
- libbz2-1.0 1.0.5-3ubuntu0.1
- Ubuntu 9.04:
- bzip2 1.0.5-1ubuntu1.1
- libbz2-1.0 1.0.5-1ubuntu1.1
- Ubuntu 8.04 LTS:
- bzip2 1.0.4-2ubuntu4.1
- libbz2-1.0 1.0.4-2ubuntu4.1
- Ubuntu 6.06 LTS:
- bzip2 1.0.3-0ubuntu2.2
- libbz2-1.0 1.0.3-0ubuntu2.2
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.