[Security-news] SA-CONTRIB-2010-065 - Content Construction Kit (CCK) - Access Bypass

[security-news at drupal.org]

  * Advisory ID: DRUPAL-SA-CONTRIB-2010-065
  * Project: Content Construction Kit (CCK) (third-party module)
  * Version: 5.x, 6.x
  * Date: 2010-June-16
  * Security risk: Less Critical
  * Exploitable from: Remote
  * Vulnerability: Access Bypass

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

The Content Construction Kit (CCK) project is a set of modules that allows
you to add custom fields to nodes using a web browser. The CCK "Node
Reference" module can be configured to display referenced nodes as hidden,
title, teaser or full view. Node access was not checked when displaying these
which could expose view access on controlled nodes to unprivileged users. In
addition, Node Reference provides a backend URL that is used for asynchronous
requests by the "autocomplete" widget to locate nodes the user can reference.
This was not checking that the user had field level access to the source
field, allowing direct queries to the backend URL to return node titles and
IDs which the user would otherwise be unable to access. Note that as Drupal 5
CCK does not have any field access control functionality, this issue only
applies to the Drupal 6 version.
-------- VERSIONS AFFECTED  
---------------------------------------------------

  * Content Construction Kit (CCK) module for Drupal 5.x versions prior to
    5.x-1.11
  * Content Construction Kit (CCK) module for Drupal 6.x versions prior to
    6.x-2.7

Drupal core is not affected. If you do not use the contributed Content
Construction Kit (CCK) [1] module, together with any node or field access
module there is nothing you need to do.
-------- SOLUTION  
------------------------------------------------------------

Install the latest version:
  * If you use the Content Construction Kit (CCK) module for Drupal 5.x
    upgrade to Content Construction Kit (CCK) 5.x-1.11 [2]
  * If you use the Content Construction Kit (CCK) module for Drupal 6.x
    upgrade to Content Construction Kit (CCK) 6.x-2.7 [3]

See also the Content Construction Kit (CCK) project page [4].
-------- REPORTED BY  
---------------------------------------------------------

  * recrit [5]
  * Marc Ferran (markus_petrux) [6], module co-maintainer

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

  * Yves Chedemois (yched) [7], module co-maintainer
  * Marc Ferran (markus_petrux) [8], module co-maintainer
  * Karen Stevenson (KarenS) [9], module co-maintainer

-------- CONTACT  
-------------------------------------------------------------

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

[1] http://drupal.org/project/cck
[2] http://drupal.org/node/828986
[3] http://drupal.org/node/828988
[4] http://drupal.org/project/cck
[5] http://drupal.org/user/452914
[6] http://drupal.org/user/39593
[7] http://drupal.org/user/39567
[8] http://drupal.org/user/39593
[9] http://drupal.org/user/45874
[10] http://drupal.org/security-team