CVE-2008-0571 in Userpoints Module
Summary
by MITRE
The point moderation form in the Userpoints 4.7.x before 4.7.x-2.3, 5.x-2 before 5.x-2.16, and 5.x-3 before 5.x-3.3 module for Drupal does not follow Drupal s Forms API submission model, which allows remote attackers to conduct cross-site request forgery (CSRF) attacks and manipulate points.
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Analysis
by VulDB Data Team • 11/03/2017
The vulnerability identified as CVE-2008-0571 affects the Userpoints module for Drupal platforms, specifically targeting versions 4.7.x before 4.7.x-2.3, 5.x-2 before 5.x-2.16, and 5.x-3 before 5.x-3.3. This issue stems from the module's failure to properly implement Drupal's Forms API submission model, creating a significant security gap that enables malicious actors to exploit cross-site request forgery mechanisms. The Userpoints module is designed to manage user point systems within Drupal environments, making it a critical component for sites that rely on user engagement metrics and reward systems. The flaw manifests when administrators or users attempt to moderate point allocations through the module's interface, where the absence of proper CSRF protection mechanisms allows attackers to craft malicious requests that manipulate point values without proper authorization.
The technical root cause of this vulnerability lies in the module's non-compliance with Drupal's established Forms API standards, which are specifically designed to prevent CSRF attacks through the implementation of unique form tokens and proper request validation. When Drupal's Forms API is properly utilized, it generates cryptographically secure tokens that must be submitted along with form data to verify that the request originates from a legitimate source within the application. The Userpoints module's failure to incorporate these security measures means that attackers can forge requests to the point moderation form, potentially allowing them to add, remove, or modify user points without proper authentication or authorization. This misimplementation creates a direct pathway for attackers to manipulate user point systems, which could be exploited for various malicious purposes including gaming point systems, defrauding users, or undermining the integrity of the platform's reward mechanisms.
The operational impact of this vulnerability extends beyond simple point manipulation, as it represents a fundamental failure in the security architecture of the affected Drupal installations. Attackers could leverage this vulnerability to conduct unauthorized point transactions, potentially affecting user accounts, reputation systems, and community engagement metrics that depend on accurate point tracking. The vulnerability is particularly dangerous because it operates at the administrative level, allowing attackers to modify point allocations that may influence user rankings, privileges, or access rights within the platform. This could lead to significant reputational damage for organizations relying on point-based systems, as well as potential financial losses if the point systems are tied to rewards, discounts, or premium services. The vulnerability also demonstrates poor security hygiene in the module development process, indicating that proper security testing and adherence to Drupal's security guidelines were not implemented during the module's development lifecycle.
Organizations affected by this vulnerability should immediately implement mitigations including updating to the patched versions of the Userpoints module, which were released to address the CSRF implementation flaws. The recommended approach involves upgrading to the latest available versions of the module that properly implement Drupal's Forms API submission model and include proper CSRF protection mechanisms. System administrators should also consider implementing additional security controls such as web application firewalls that can detect and block suspicious form submissions, and monitoring for unusual point modification patterns that might indicate exploitation attempts. The vulnerability aligns with CWE-352, which specifically addresses Cross-Site Request Forgery, and represents a clear violation of the principle of least privilege that should be enforced in all web application components. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and credential manipulation, as attackers can exploit the CSRF flaw to modify user points without proper authentication, effectively gaining unauthorized access to administrative functions within the point management system. The incident underscores the importance of proper security testing and adherence to established security frameworks, particularly when developing modules for widely-used content management systems like Drupal where security vulnerabilities can have widespread impact across numerous installations.