USN-986-1: bzip2 vulnerability

Publication date

20 September 2010

Overview

bzip2 could be made to run programs as your login if it opened a specially crafted file.


Packages

  • bzip2 - high-quality block-sorting file compressor - utilities

Details

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.

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.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
9.10 karmic bzip2 –  1.0.5-3ubuntu0.1
libbz2-1.0 –  1.0.5-3ubuntu0.1
9.04 jaunty bzip2 –  1.0.5-1ubuntu1.1
libbz2-1.0 –  1.0.5-1ubuntu1.1
8.04 hardy bzip2 –  1.0.4-2ubuntu4.1
libbz2-1.0 –  1.0.4-2ubuntu4.1
6.06 dapper bzip2 –  1.0.3-0ubuntu2.2
libbz2-1.0 –  1.0.3-0ubuntu2.2
10.04 lucid bzip2 –  1.0.5-4ubuntu0.1
libbz2-1.0 –  1.0.5-4ubuntu0.1

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