[Security-news] SA-CONTRIB-2014-010 Services - Access Bypass and Privilege Escalation

[security-news at drupal.org]

View online: https://drupal.org/node/2189509

   * Advisory ID: DRUPAL-SA-CONTRIB-2014-010
   * Project: Services [1] (third-party module)
   * Version: 7.x
   * Date: 2014-February-05
   * Security risk: Highly critical [2]
   * Exploitable from: Remote
   * Vulnerability: Access bypass

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

The Services module enables you to expose an API to third party systems using
REST, XML-RPC or other protocols.

.... User update access bypass vulnerability

An authenticated user is able to assign additional roles to themselves, which
means they can escalate their privileges by assigning an administrative role.

This vulnerability is mitigated by the fact that the user must be able to log
in on the site, the update operation on the user resource configuration must
be enabled, and a site must have an role with more permissions than the
authenticated user.

.... Comment access bypass vulnerability

As an authenticated user an attacker with the permission to post comments is
able to update other users' comments.

This vulnerability is mitigated by the fact that the update operation on the
comment resource configuration must be enabled.


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

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

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

   * Services 7.x-3.x versions prior to 7.x-3.6.

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

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

Install the latest version:

   * If you use the Services module for Drupal 7.x, upgrade to Services 
7.x-3.7
     [5]

Also see the Services [6] project page.

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

   * The User update access bypass vulnerability was reported by Fredrik 
Lassen
     [7].
   * The Comment access bypass vulnerability was reported by wedge [8].

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

   * The User update access bypass vulnerability was fixed by Fredrik Lassen
     [9].
   * The Comment access bypass vulnerability was fixed by Kyle Browning [10],
     the module maintainer.

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

   * Klaus Purer [11] of the Drupal Security Team
   * Balazs Dianiska [12] a 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 [13].

Learn more about the Drupal Security team and their policies [14], writing
secure code for Drupal [15], and securing your site [16].

Follow the Drupal Security Team on Twitter at
https://twitter.com/drupalsecurity [17]


[1] http://drupal.org/project/services
[2] http://drupal.org/security-team/risk-levels
[3] http://cve.mitre.org/
[4] http://drupal.org/project/services
[5] https://drupal.org/node/2186581
[6] http://drupal.org/project/services
[7] https://drupal.org/user/243377
[8] https://drupal.org/user/11442
[9] https://drupal.org/user/243377
[10] https://drupal.org/user/211387
[11] http://drupal.org/user/262198
[12] http://drupal.org/user/58645
[13] http://drupal.org/contact
[14] http://drupal.org/security-team
[15] http://drupal.org/writing-secure-code
[16] http://drupal.org/security/secure-configuration
[17] https://twitter.com/drupalsecurity