CVE-2009-3780 in Abuse
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Abuse 5.x before 5.x-2.1 and 6.x before 6.x-1.1-alpha1, a module for Drupal, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 01/23/2019
The CVE-2009-3780 vulnerability represents a critical cross-site scripting flaw within the Abuse module for Drupal content management systems. This module, designed to handle abuse reporting and management functionalities, was found to contain a security weakness that allowed remote attackers to execute malicious scripts within the context of user sessions. The vulnerability affected Drupal versions 5.x prior to 5.x-2.1 and 6.x prior to 6.x-1.1-alpha1, making a significant portion of Drupal installations susceptible to this type of attack. The flaw specifically enabled attackers to inject arbitrary web scripts or HTML code into the application's response, potentially compromising user sessions and data integrity.
The technical nature of this vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is classified as a code injection flaw that occurs when untrusted data is sent to a web browser without proper validation or sanitization. In the context of the Abuse module, the vulnerability likely stemmed from insufficient input validation and output encoding mechanisms within the module's codebase. Attackers could exploit this weakness by crafting malicious input that would be processed and displayed without adequate sanitization, allowing the injected scripts to execute in the browsers of unsuspecting users who visited affected pages. This type of vulnerability operates at the application layer and can be particularly dangerous as it leverages the trust relationship between the web application and its users.
The operational impact of CVE-2009-3780 extends beyond simple script execution, as it provides attackers with the capability to perform session hijacking, steal user credentials, redirect users to malicious websites, or even deface the affected web applications. Given that the Abuse module was commonly used for managing user reports and abuse tracking, the attack surface was particularly concerning as it could be exploited through legitimate user interaction with the module's features. The vulnerability's presence in multiple Drupal version streams meant that organizations running these older versions faced significant risk, particularly those with high-profile websites or applications handling sensitive user data. From an attacker's perspective, this vulnerability aligns with the ATT&CK technique of Web Application Attack Surface, where the exploitation of such flaws can lead to broader compromise of the web application ecosystem.
Mitigation strategies for this vulnerability required immediate patching of the affected Drupal versions, with administrators upgrading to the patched releases 5.x-2.1 and 6.x-1.1-alpha1. Organizations should have implemented comprehensive input validation measures, including proper sanitization of all user-provided data before processing or display. The security community recommended enabling Drupal's built-in XSS protection mechanisms and implementing Content Security Policy headers to further reduce the risk of script execution. Additionally, regular security audits and vulnerability assessments became crucial for identifying similar weaknesses in other modules or custom code implementations. The incident highlighted the importance of maintaining up-to-date Drupal core and contributed modules, as well as implementing robust security monitoring to detect and respond to potential exploitation attempts. Organizations that failed to address this vulnerability promptly risked significant reputational damage and potential data breaches, emphasizing the critical nature of timely security patch management in web application environments.