Exploit the possiblities

Drupal Node Access User Reference 6.x / 7.x Access Bypass

Drupal Node Access User Reference 6.x / 7.x Access Bypass
Posted May 30, 2013
Authored by Jamie Wiseman | Site drupal.org

Drupal Node Access User Reference third party modules versions 6.x and 7.x suffer from an access bypass vulnerability.

tags | advisory, bypass
MD5 | 618adebc62c83879438923175160e9c4

Drupal Node Access User Reference 6.x / 7.x Access Bypass

Change Mirror Download
View online: http://drupal.org/node/2007122

* Advisory ID: DRUPAL-SA-CONTRIB-2013-049
* Project: Node access user reference [1] (third-party module)
* Version: 6.x, 7.x
* Date: 2013-May-29
* Security risk: Moderately critical [2]
* Exploitable from: Remote
* Vulnerability: Access bypass

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

This module allows different access permissions to be given to authors,
referenced users and non-referenced users.

When an author has created content containing a user reference field (with
author update/delete grants enabled) and the author's user account is later
deleted, content created by them can be edited by anonymous users.


-------- CVE IDENTIFIER(S) ISSUED
--------------------------------------------

* /A CVE identifier [3] will be requested, and added upon issuance, in
accordance with Drupal Security Team processes./

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

* nodeaccess_userreference 6.x-3.x versions prior to 6.x-3.5.
* nodeaccess_userreference 7.x-3.x versions prior to 7.x-3.10.

Drupal core is not affected. If you do not use the contributed Node access
user reference [4] module, there is nothing you need to do.

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

Install the latest version:

* If you use the nodeaccess_userreference module for Drupal 6.x, upgrade to
nodeaccess_userreference 6.x-3.5 [5]
* If you use the nodeaccess_userreference module for Drupal 7.x, upgrade to
nodeaccess_userreference 7.x-3.10 [6]

Also see the Node access user reference [7] project page.

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

* Jamie Wiseman [8]

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

* Jamie Wiseman [9]
* Dan Smith [10] provisional member of the Drupal Security Team
* Chris Hales [11] and Greg Knaddison [12] of the Drupal Security Team

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

* Dan Smith [13] provisional 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 [14].

Learn more about the Drupal Security team and their policies [15], writing
secure code for Drupal [16], and securing your site [17].


[1] http://drupal.org/project/nodeaccess_userreference
[2] http://drupal.org/security-team/risk-levels
[3] http://cve.mitre.org/
[4] http://drupal.org/project/nodeaccess_userreference
[5] http://drupal.org/node/2007072
[6] http://drupal.org/node/2007078
[7] http://drupal.org/project/nodeaccess_userreference
[8] http://drupal.org/user/16327
[9] http://drupal.org/user/16327
[10] http://drupal.org/user/241220
[11] http://drupal.org/user/347249
[12] http://drupal.org/user/36762
[13] http://drupal.org/user/241220
[14] http://drupal.org/contact
[15] http://drupal.org/security-team
[16] http://drupal.org/writing-secure-code
[17] http://drupal.org/security/secure-configuration

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