Debian Security Advisory DSA 2828-1 (drupal6 - several vulnerabilities)

Summary
Multiple vulnerabilities have been discovered in Drupal, a fully-featured content management framework: vulnerabilities due to optimistic cross-site request forgery protection, insecure pseudo random number generation, code execution and incorrect security token validation. In order to avoid the remote code execution vulnerability, it is recommended to create a .htaccess file (or an equivalent configuration directive in case you are not using Apache to serve your Drupal sites) in each of your sites' files directories (both public and private, in case you have both configured). Please refer to the NEWS file provided with this update and the upstream advisory at drupal.org/SA-CORE-2013-003 for further information.
Solution
For the oldstable distribution (squeeze), these problems have been fixed in version 6.29-1. We recommend that you upgrade your drupal6 packages.
Insight
Drupal is a dynamic web site platform which allows an individual or community of users to publish, manage and organize a variety of content, Drupal integrates many popular features of content management systems, weblogs, collaborative tools and discussion-based community software into one easy-to-use package.
Affected
drupal6 on Debian Linux
Detection
This check tests the installed software version using the apt package manager.
References