USN-843-1: BackupPC vulnerability

6 October 2009

backuppc vulnerability

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

  • Ubuntu 9.04
  • Ubuntu 8.10
  • Ubuntu 8.04 LTS

Software Description

  • backuppc


It was discovered that BackupPC did not restrict normal users from setting the ClientNameAlias parameter. An authenticated user could exploit this to gain access to unauthorized hosts. This update fixed the issue by preventing normal users from modifying the ClientNameAlias configuration parameter.

Update instructions

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

Ubuntu 9.04
backuppc - 3.1.0-4ubuntu1.1
Ubuntu 8.10
backuppc - 3.1.0-3ubuntu2.1
Ubuntu 8.04 LTS
backuppc - 3.0.0-4ubuntu1.1

To update your system, please follow these instructions:

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