CVE-2012-4476 in Drag
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Drag & Drop Gallery module 6.x for Drupal allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 02/04/2018
The CVE-2012-4476 vulnerability represents a critical cross-site scripting flaw within the Drag & Drop Gallery module version 6.x for Drupal content management systems. This vulnerability exposes web applications to malicious injection attacks that can compromise user sessions and data integrity. The flaw specifically affects the module's handling of user input during drag and drop operations, creating an attack surface where malicious actors can execute arbitrary JavaScript code within the context of other users' browsers. The vulnerability's classification as a remote code execution vector means that attackers do not need physical access to the system or direct user interaction beyond visiting a compromised page.
The technical implementation of this XSS vulnerability stems from inadequate input validation and output sanitization within the module's frontend components. When users interact with the drag and drop gallery interface, the system fails to properly escape or filter user-supplied data before rendering it back to the browser. This allows attackers to inject malicious scripts through various input fields, including image captions, gallery titles, or metadata associated with uploaded media files. The vulnerability's unspecified vectors suggest that multiple entry points within the module's codebase could potentially be exploited, making it particularly dangerous for comprehensive attack surface analysis. This weakness directly maps to CWE-79 which defines the classic cross-site scripting vulnerability where untrusted data is improperly handled during web page generation.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable sophisticated attack chains that compromise user authentication tokens, steal session cookies, and redirect users to malicious domains. Attackers can leverage this vulnerability to perform session hijacking, deface websites, or harvest sensitive user information from authenticated sessions. The remote nature of the attack means that exploitation can occur from anywhere on the internet without requiring local system access or complex network reconnaissance. Organizations running vulnerable Drupal installations face significant risk of data breaches, reputational damage, and potential regulatory penalties if user data is compromised through this attack vector. The vulnerability's persistence in the system means that even after initial exploitation, attackers can maintain access and continue to harvest information over extended periods.
Mitigation strategies for CVE-2012-4476 require immediate action including the application of available security patches from the Drupal security team and the implementation of additional defensive measures. Organizations should prioritize upgrading to patched versions of the Drag & Drop Gallery module or completely disabling the module until proper updates are applied. Input validation controls should be implemented at multiple layers including web application firewalls, server-side sanitization routines, and client-side content security policies. The principle of least privilege should be enforced by ensuring that users interacting with gallery modules have minimal required permissions and that all user-generated content undergoes strict sanitization before display. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities within other third-party modules and custom code implementations. Additionally, implementing proper monitoring and logging of user interactions with gallery components can help detect anomalous behavior indicative of exploitation attempts. These defensive measures align with ATT&CK framework techniques targeting web application exploitation and credential access, ensuring comprehensive protection against both current and potential future variants of similar vulnerabilities.