USN-1444-1: BackupPC vulnerability

17 May 2012

backuppc vulnerability

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

  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS

Summary

BackupPC could be made to expose sensitive information over the network.

Software Description

  • backuppc - high-performance, enterprise-grade system for backing up PCs

Details

It was discovered that BackupPC did not properly sanitize its input when processing RestoreFile error messages, resulting in a cross-site scripting (XSS) vulnerability. With cross-site scripting vulnerabilities, if a user were tricked into viewing server output during a crafted server request, a remote attacker could exploit this to modify the contents, or steal confidential data, within the same domain.

Update instructions

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

Ubuntu 12.04 LTS
backuppc - 3.2.1-2ubuntu1.1
Ubuntu 11.10
backuppc - 3.2.1-1ubuntu1.2
Ubuntu 11.04
backuppc - 3.2.0-3ubuntu4.3
Ubuntu 10.04 LTS
backuppc - 3.1.0-9ubuntu1.3
Ubuntu 8.04 LTS
backuppc - 3.0.0-4ubuntu1.4

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References