Ubuntu Security Notice USN-909-1
11th March, 2010
dpkg vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 9.10
- Ubuntu 9.04
- Ubuntu 8.10
- Ubuntu 8.04 LTS
- Ubuntu 6.06 LTS
Software description
- dpkg
Details
William Grant discovered that dpkg-source did not safely apply diffs
when unpacking source packages. If a user or an automated system were
tricked into unpacking a specially crafted source package, a remote
attacker could modify files outside the target unpack directory, leading
to a denial of service or potentially gaining access to the system.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 9.10:
- dpkg-dev 1.15.4ubuntu2.1
- Ubuntu 9.04:
- dpkg-dev 1.14.24ubuntu1.1
- Ubuntu 8.10:
- dpkg-dev 1.14.20ubuntu6.3
- Ubuntu 8.04 LTS:
- dpkg-dev 1.14.16.6ubuntu4.1
- Ubuntu 6.06 LTS:
- dpkg-dev 1.13.11ubuntu7.1
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.