View online: http://drupal.org/node/1782832

  * Advisory ID: DRUPAL-SA-CONTRIB-2012-141
  * Project: Mass Contact [1] (third-party module)
  * Version: 6.x
  * Date: 2012-September-12
  * Security risk: Moderately critical [2]
  * Exploitable from: Remote
  * Vulnerability: Access bypass

-------- DESCRIPTION  
---------------------------------------------------------

This module allows anyone with permission to send a single message to
multiple users of a site, using its roles functionality.

The module doesn't sufficiently check permissions after the form has been
submitted.

This vulnerability is mitigated by the fact that an attacker must use a tool
of some kind (like the Tamper Data Firefox add-on) to intercept the form
submission request in order to modify the settings.

CVE: Requested

-------- VERSIONS AFFECTED  
---------------------------------------------------

  * Mass Contact 6.x-1.x versions prior to 6.x-1.2.

Drupal core is not affected. If you do not use the contributed Mass Contact
[3] module, there is nothing you need to do.

-------- SOLUTION  
------------------------------------------------------------

Install the latest version:

  * If you use the Mass Contact module for Drupal 6.x, upgrade to Mass Contact
    6.x-1.2 [4]

Also see the Mass Contact [5] project page.

-------- REPORTED BY  
---------------------------------------------------------

  * Michael Orlitzky [6]

-------- FIXED BY  
------------------------------------------------------------

  * Michael Orlitzky [7]
  * Jason Flatt [8] the module maintainer

-------- COORDINATED BY  
------------------------------------------------------

  * Greg Knaddison [9] of the Drupal Security Team

-------- CONTACT AND MORE INFORMATION  
----------------------------------------

The Drupal security team can be reached at security at drupal.org or via the
contact form at http://drupal.org/contact [10].

Learn more about the Drupal Security team and their policies [11], writing
secure code for Drupal [12], and securing your site [13].


[1] http://drupal.org/project/mass_contact
[2] http://drupal.org/security-team/risk-levels
[3] http://drupal.org/project/mass_contact
[4] http://drupal.org/node/1782766
[5] http://drupal.org/project/mass_contact
[6] http://drupal.org/user/1731656
[7] http://drupal.org/user/1731656
[8] http://drupal.org/user/4649
[9] http://drupal.org/user/36762
[10] http://drupal.org/contact
[11] http://drupal.org/security-team
[12] http://drupal.org/writing-secure-code
[13] http://drupal.org/security/secure-configuration