USN-1249-1: BackupPC vulnerabilities

27 October 2011

backuppc vulnerabilites

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

  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.10
  • 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 backup browser 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. This issue did not affect Ubuntu 11.10. (CVE-2011-3361)

Jamie Strandboge discovered that BackupPC did not properly sanitize its input when processing log file viewer error messages, resulting in cross-site scripting (XSS) vulnerabilities.

Update instructions

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

Ubuntu 11.10
backuppc - 3.2.1-1ubuntu1.1
Ubuntu 11.04
backuppc - 3.2.0-3ubuntu4.2
Ubuntu 10.10
backuppc - 3.1.0-9ubuntu2.2
Ubuntu 10.04 LTS
backuppc - 3.1.0-9ubuntu1.2
Ubuntu 8.04 LTS
backuppc - 3.0.0-4ubuntu1.3

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