CVE-2006-6646 in Project
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Drupal (1) Project Issue Tracking 4.7.x-1.0 and 4.7.x-2.0, and (2) Project 4.6.x-1.0, 4.7.x-1.0, and 4.7.x-2.0 allow remote attackers to inject arbitrary web script or HTML via unspecified parameters, which do not use the check_plain function.
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Analysis
by VulDB Data Team • 08/11/2018
The vulnerability identified as CVE-2006-6646 represents a critical cross-site scripting weakness affecting multiple versions of the Drupal content management system. This issue impacts both the Project Issue Tracking module and the core Drupal framework itself, specifically affecting versions 4.6.x-1.0, 4.7.x-1.0, and 4.7.x-2.0 across different release streams. The vulnerability stems from insufficient input validation and sanitization practices within the affected components, creating opportunities for malicious actors to execute arbitrary scripts in the context of affected users' browsers.
The technical flaw manifests when the application fails to properly sanitize user-supplied input before rendering it in web pages. This occurs because the affected code paths do not utilize the check_plain function, which is Drupal's standard mechanism for escaping HTML entities and preventing XSS attacks. The vulnerability is classified under CWE-79 as Improper Neutralization of Input During Web Page Generation, specifically within the context of web applications that generate dynamic content. Attackers can exploit this weakness by crafting malicious payloads in unspecified parameters that are then processed and displayed without proper sanitization, allowing them to inject HTML or JavaScript code that executes in the victim's browser.
The operational impact of this vulnerability is significant as it enables remote code execution within the context of affected user sessions. An attacker could potentially steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users. The vulnerability affects the core functionality of Drupal's issue tracking and project management features, making it particularly dangerous for organizations that rely on these modules for collaborative development and project management. The attack surface is broad since the vulnerability affects multiple version streams and module combinations, increasing the potential exposure for various Drupal installations.
Security professionals should implement immediate mitigations including applying the available patches that address the input sanitization issues and ensure proper use of Drupal's check_plain function throughout affected code paths. Organizations should also consider implementing web application firewalls to detect and block suspicious input patterns, while conducting thorough security assessments of all Drupal installations to identify similar vulnerabilities. The ATT&CK framework categorizes this vulnerability under T1566 as Phishing, as attackers could leverage it to deliver malicious payloads to unsuspecting users. Additionally, the vulnerability highlights the importance of input validation practices and proper security coding standards that align with OWASP Top Ten recommendations for preventing XSS attacks in web applications.