USN-290-1: awstats vulnerability

8 June 2006

awstats vulnerability

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

  • Ubuntu 6.06 LTS
  • Ubuntu 5.10
  • Ubuntu 5.04

Software Description


Hendrik Weimer discovered a privilege escalation vulnerability in awstats. By supplying the ‘configdir’ CGI parameter and setting it to an attacker-controlled directory (such as an FTP account, /tmp, or similar), an attacker could execute arbitrary shell commands with the privileges of the web server (user ‘www-data’).

This update disables the ‘configdir’ parameter by default. If all local user accounts can be trusted, it can be reenabled by running awstats with the AWSTATS_ENABLE_CONFIG_DIR environment variable set to a nonempty value.

Update instructions

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

Ubuntu 6.06 LTS
awstats - 6.5-1ubuntu1.1
Ubuntu 5.10
awstats - 6.4-1ubuntu1.2
Ubuntu 5.04
awstats - 6.3-1ubuntu0.3

To update your system, please follow these instructions:

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