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Date: Tue, 30 Jan 2007 02:14:53 +0100
From: Uwe Hermann <>
Subject: [DRUPAL-SA-2007-005] Drupal 4.7.6 / 5.1 fixes arbitrary code execution issue

Drupal security advisory                                  DRUPAL-SA-2007-005
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
Versions affected
- Drupal 4.7.x versions before Drupal 4.7.6
- Drupal 5.x versions before Drupal 5.1

- If you are running Drupal 4.7.x then upgrade to Drupal 4.7.6.
- If you are running Drupal 5.x then upgrade to Drupal 5.1.

- To patch Drupal 4.7.5 use
- To patch Drupal 5.0 use

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.

Reported by
The Drupal security team.

The security contact for Drupal can be reached at security at
or using the form at

// Uwe Hermann, on behalf of the Drupal Security Team.
--  | |

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