Open source software security

Drupal Data Module Multiple Vulnerabilities

9 February 2011

Description of Vulnerability:

Drupal (http://drupal.org) is a robust content management system (CMS) written in PHP and MySQL. The Drupal Data module (http://drupal.org/project/data) "helps you model, manage and query related sets of tables. It offers an administration interface and a low level API for manipulating tables and accessing their contents."

The Data module contains multiple Cross Site Scripting (XSS) vulnerabilities because it fails to sanitize table descriptions, field names or labels before display. This results in multiple stored XSS as well as DOM based XSS vulnerabilities. Drupal site users with the ability to create or edit tables using the Data module could inject arbitrary HTML into administrative pages. CVE-2011-2714 has been assigned to this issue.

The Data module also contains numerous SQL injection vulnerabilities because it fails to sanitize values for table names or column names before invoking SQL statements. This allows users with the ability to create or edit tables managed by the Data module to perform SQL injection attacks. CVE-2011-2715 has been assigned to this issue.

Systems affected:

Drupal 6.20 with Data 6.x-1.0-alpha14 was tested and shown to be vulnerable.

Impact

User could inject arbitrary scripts into pages affecting site users. This could result in administrative account compromise leading to web server process compromise. A more likely scenario would be for an attacker to inject hidden content (such as iframes, applets, or embedded objects) that would attack client browsers in an attempt to compromise site users' machines. This vulnerability could also be used to launch cross site request forgery (XSRF) attacks against the site that could have other unexpected consequences.

SQL injection could be used to expose password hashes of site users, add or alter existing users, reset passwords, or inject arbitrary content into the Drupal site. SQL injection can also be used to inject arbitrary code (PHP and scripts) into the Drupal database that could later be executed with the privileges of the web server.

Mitigating factors:

In order to exploit this vulnerability the attacker must have credentials to an authorized account that has been assigned the permissions to administer or edit in the Data module. This could be accomplished via social engineering, brute force password guessing, or abuse or legitimate credentials.

Vendor response:

Drupal security team does not handle issues with pre-release versions of modules (such as alpha or dev). These issues were reported in the module's public issue queue (http://drupal.org/node/1056470).