[Security-news] SA-CORE-2011-002 - Drupal core - Access bypass

[security-news at drupal.org]

  * Advisory ID: DRUPAL-SA-CORE-2011-002
  * Project: Drupal core [1]
  * Version: 7.x
  * Date: 2011-JUNE-29
  * Security risk: Highly critical [2]
  * Exploitable from: Remote
  * Vulnerability: Access bypass

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

.... Access bypass in node listings

Listings showing nodes but not JOINing the node table show all nodes
regardless of restrictions imposed by the node_access system. In core, this
affects the taxonomy and the forum subsystem.

Note that fixing this issue in contributed modules requires a
backwards-compatible API change for modules listing nodes. See
http://drupal.org/node/1204572 [3] for more details.

This issue affects Drupal 7.x only.

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

  * Drupal 7.0, 7.1 and 7.2.

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

Install the latest version:

  * If you are running Drupal 7.x then upgrade to Drupal 7.3 or 7.4.

The Security Team has released both a pure security update without other bug
fixes and a security update combined with other bug fixes and improvements.
You can choose to either only include the security update for an immediate
fix (which might require less quality assurance and testing) or more fixes
and improvements alongside the security fixes by choosing between Drupal 7.3
and Drupal 7.4. Read the announcement [4] for more information.

See also the Drupal core [5] project page.

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

  * The access bypass was reported independently by numerous people, including
    Sascha Grossenbacher [6], Khaled Alhourani [7], and Ben Ford [8].

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

  * The access bypass was fixed by Károly Négyesi [9], member 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/drupal
[2] http://drupal.org/security-team/risk-levels
[3] http://drupal.org/node/1204572
[4] http://drupal.org/drupal-7.4
[5] http://drupal.org/project/drupal
[6] http://drupal.org/user/214652
[7] http://drupal.org/user/265439
[8] http://drupal.org/user/12534
[9] http://drupal.org/user/9446
[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