CVE-2015-3350 in Todo Filter Module
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability in the Todo Filter module before 6.x-1.1 and 7.x-1.x before 7.x-1.1 for Drupal allows remote attackers to hijack the authentication of arbitrary users for requests that toggle a task via unspecified vectors.
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Analysis
by VulDB Data Team • 03/19/2019
The CVE-2015-3350 vulnerability represents a critical cross-site request forgery flaw within the Todo Filter module for Drupal platforms. This vulnerability affects versions prior to 6.x-1.1 and 7.x-1.x before 7.x-1.1, creating a significant security risk for Drupal websites that utilize this module. The flaw enables remote attackers to manipulate authenticated users' sessions by tricking them into executing unintended actions through maliciously crafted requests. The vulnerability specifically targets the task toggling functionality within the Todo Filter module, allowing attackers to hijack user authentication and perform unauthorized operations on behalf of legitimate users.
The technical implementation of this CSRF vulnerability stems from the absence of proper validation mechanisms for request authenticity within the Todo Filter module's task management functions. When users navigate to pages containing the Todo Filter module, the application fails to implement adequate anti-CSRF tokens or other session validation measures. This omission creates a pathway for attackers to craft malicious requests that appear legitimate to the Drupal application, as they can leverage existing user sessions and authentication contexts. The vulnerability operates through unspecified vectors that typically involve embedding malicious links or forms within compromised websites or email attachments that automatically submit requests to the vulnerable Drupal instance.
The operational impact of this vulnerability extends beyond simple data manipulation, as it provides attackers with persistent access to user accounts and their associated privileges. Successful exploitation allows threat actors to toggle tasks within the Todo Filter module, potentially leading to unauthorized modifications of user data, task assignments, or other critical functionality. This capability enables attackers to perform actions such as marking tasks as complete, deleting tasks, or modifying task priorities without proper authorization. The vulnerability's remote nature means that attackers can exploit it from anywhere on the internet, making it particularly dangerous for web applications that handle sensitive user information or business-critical task management data.
Organizations affected by this vulnerability should implement immediate mitigations including upgrading to patched versions of the Todo Filter module, specifically versions 6.x-1.1 and 7.x-1.1 or later. Security teams must also consider implementing additional protective measures such as cross-site request forgery tokens throughout the application, enforcing strict session management protocols, and conducting comprehensive security audits of all third-party modules. The vulnerability aligns with CWE-352, which specifically addresses cross-site request forgery conditions in web applications, and follows patterns commonly associated with ATT&CK technique T1566.001 for initial access through spearphishing attachments or links. Organizations should also establish monitoring procedures to detect unauthorized access attempts and implement proper logging mechanisms to track suspicious activity related to task management functions within their Drupal installations.