USN-506-1: tar vulnerability

28 August 2007

tar vulnerability

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

  • Ubuntu 7.04
  • Ubuntu 6.10
  • Ubuntu 6.06 LTS

Software Description

  • tar


Dmitry V. Levin discovered that tar did not correctly detect the “..” file path element when unpacking archives. If a user or an automated system were tricked into unpacking a specially crafted tar file, arbitrary files could be overwritten with user privileges.

Update instructions

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

Ubuntu 7.04
tar - 1.16-2ubuntu0.1
Ubuntu 6.10
tar - 1.15.91-2ubuntu0.4
Ubuntu 6.06 LTS
tar - 1.15.1-2ubuntu2.2

To update your system, please follow these instructions:

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