USN-909-1: dpkg vulnerability

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


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:
Ubuntu 6.06 LTS:
dpkg-dev 1.13.11ubuntu7.1

To update your system, please follow these instructions:

In general, a standard system upgrade is sufficient to effect the
necessary changes.