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Category:   Application (Forum/Board/Portal)  >   Drupal Vendors:   drupal.org
Drupal Bugs Let Remote Users Conduct Cross-Site Scripting Attacks and Remote Authenticated Users Download the Configuration File and Modify Certain Settings
SecurityTracker Alert ID:  1036886
SecurityTracker URL:  http://securitytracker.com/id/1036886
CVE Reference:   CVE-2016-7570, CVE-2016-7571, CVE-2016-7572   (Links to External Site)
Updated:  Oct 5 2016
Original Entry Date:  Sep 23 2016
Impact:   Disclosure of authentication information, Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, Modification of system information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 8.x
Description:   Several vulnerabilities were reported in Drupal. A remote authenticated user can modify comment visibility settings. A remote authenticated user can obtain the configuration file. A remote user can conduct cross-site scripting attacks.

The software does not properly filter HTML code from user-supplied input before displaying the input in an HTTP exception [CVE-2016-7571]. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the Drupal software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A remote authenticated user without 'Administer comments' privileges can set comment visibility on nodes for which they have edit permissions [CVE-2016-7570].

A remote authenticated user without administrative permissions can download a full configuration export via the 'system.temporary' route [CVE-2016-7572].

Quintus Maximus, Kier Heyl, Ivan, and Anton Shubkin reported these vulnerabilities.

Impact:   A remote authenticated user can modify comment visibility settings.

A remote authenticated user can obtain the configuration file.

A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Drupal software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

Solution:   The vendor has issued a fix (8.1.10).

The vendor advisory is available at:

https://www.drupal.org/SA-CORE-2016-004

Vendor URL:  www.drupal.org/SA-CORE-2016-004 (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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