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Ubuntu: 2183-2: dpkg vulnerability Print E-mail
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Posted by Benjamin D. Thomas   
Ubuntu A malicious source package could write files outside the unpack directory.
Ubuntu Security Notice USN-2183-2
May 01, 2014

dpkg vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS
- Ubuntu 13.10
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS


A malicious source package could write files outside the unpack directory.

Software Description:
- dpkg: Debian package management system


USN-2183-1 fixed a vulnerability in dpkg. Javier Serrano Polo discovered
that the fix introduced a vulnerability in releases with an older version
of the patch utility. This update fixes the problem.

Original advisory details:

 Jakub Wilk discovered that dpkg incorrectly certain paths and symlinks 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 versions:

Ubuntu 14.04 LTS:
  libdpkg-perl                    1.17.5ubuntu5.2

Ubuntu 13.10:
  libdpkg-perl                    1.16.12ubuntu1.2

Ubuntu 12.10:
  libdpkg-perl                    1.16.7ubuntu6.2

Ubuntu 12.04 LTS:

Ubuntu 10.04 LTS:

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


Package Information:

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