what you don't know can hurt you

Drupal Webform CiviCRM Integration 7.x Access Bypass

Drupal Webform CiviCRM Integration 7.x Access Bypass
Posted Nov 8, 2012
Authored by Coleman Watts | Site drupal.org

Drupal Webform CiviCRM Integration third party module version 7.x suffers from an access bypass vulnerability.

tags | advisory, bypass
MD5 | e6312abeaf2d7e5b7f02dd814102d61c

Drupal Webform CiviCRM Integration 7.x Access Bypass

Change Mirror Download
View online: http://drupal.org/node/1834868

* Advisory ID: DRUPAL-SA-CONTRIB-2012-161
* Project: Webform CiviCRM Integration [1] (third-party module)
* Version: 7.x
* Date: 2012-November-07
* Security risk: Moderately critical [2]
* Exploitable from: Remote
* Vulnerability: Access bypass

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

Webform CiviCRM integration allows you to expose contact data via Webforms.
Depending on what fields you have exposed in your form, this may include
personal information such as birthdate, phone number, email address, etc.
Proper permission settings are important to keep this information from prying
eyes.
Each "existing contact" on a webform has a setting to enforce CiviCRM
permissions -- this setting should rarely be disabled, and only done so by
admins who know what they're doing. Unfortunately some circumstances may have
led this setting to be incorrectly disabled by the admin:

* In version 3.0 - 3.1 of this module, "Enforce Permissions" was not on by
default, and needed to be manually selected by the admin. This was fixed
in 3.2.
* In versions 3.0 - 3.2, the current user could not be autofilled for normal
unprivledged users. This may have led some admins to disable the "Enforce
Permissions" setting, a dangerous workaround.
* In versions 3.0 - 3.3, autofilling a contact via the url with a checksum
did not work for anonymous users unless the "Enforce Permissions" setting
was disabled.

Version 3.4 includes an update script which will automatically set "Enforce
Permissions" for all existing contacts to /true/. Once you have upgraded, you
may wish to review your webforms and ensure that autofilling contacts works
as expected, especially for anonymous users. In a few rare cases where you
have established access control through some other means, disabling "Enforce
Permissions" may be necessary and you will need to do so manually.

CVE: Requested

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

* Webform CiviCRM Integration 7.x-3.0 to 7.x-3.3

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

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

Install the latest version:

* If you use Webform CiviCRM Integration version 3.x, upgrade to version 3.4
[4]

Also see the Webform CiviCRM Integration [5] project page.

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

* Coleman Watts [6] the module maintainer

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

* Coleman Watts [7] the module maintainer

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

* Greg Knaddison [8] 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 [9].

Learn more about the Drupal Security team and their policies [10], writing
secure code for Drupal [11], and securing your site [12].


[1] http://drupal.org/project/webform_civicrm
[2] http://drupal.org/security-team/risk-levels
[3] http://drupal.org/project/webform_civicrm
[4] http://drupal.org/node/1833974
[5] http://drupal.org/project/webform_civicrm
[6] http://drupal.org/user/639856
[7] http://drupal.org/user/639856
[8] http://drupal.org/user/36762
[9] http://drupal.org/contact
[10] http://drupal.org/security-team
[11] http://drupal.org/writing-secure-code
[12] http://drupal.org/security/secure-configuration

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