Project: Drupal core Version: 4.7.x, 5.x Date: 2007-Jan-29 Security risk: Highy critical Exploitable from: Remote Vulnerability: Arbitrary code execution
Previews on comments were not passed through normal form validation routines, enabling users with the 'post comments' permission and access to more than one input filter to execute arbitrary code. By default, anonymous and authenticated users have access to only one input format.
Immediate workarounds include: disabling the comment module, revoking the 'post comments' permission for all users or limiting access to one input format.
If you are running Drupal 5.x then upgrade to Drupal 5.1. http://ftp.osuosl.org/pub/drupal/files/projects/drupal-5.1.tar.gz
To patch Drupal 4.7.5 use http://drupal.org/files/sa-2007-005/SA-2007-005-4.7.5.patch.
Please note that the patches only contain changes related to this advisory, and do not fix bugs that were solved in 4.7.6 or 5.1.
The Drupal security team.
The security contact for Drupal can be reached at security at drupal.org or using the form at http://drupal.org/contact.
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