CVE-2009-4429 in Sections module
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Sections module 5.x before 5.x-1.3 and 6.x before 6.x-1.3 for Drupal allows remote authenticated users with "administer sections" privileges to inject arbitrary web script or HTML via a section name (aka the Name field).
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Analysis
by VulDB Data Team • 04/21/2025
The CVE-2009-4429 vulnerability represents a critical cross-site scripting flaw within the Sections module for Drupal platforms running versions 5.x prior to 5.x-1.3 and 6.x prior to 6.x-1.3. This vulnerability specifically targets the administrative functionality of the Sections module, which is designed to provide flexible content structuring capabilities for Drupal websites. The flaw exists in how the system processes and renders section names, creating an avenue for malicious actors to inject arbitrary web scripts or HTML content. The vulnerability requires an attacker to possess legitimate administrative privileges, specifically the "administer sections" permission, which limits the attack surface but does not eliminate the severity of the issue.
The technical implementation of this XSS vulnerability stems from insufficient input sanitization within the Name field of section configurations. When administrators create or modify sections through the Drupal administrative interface, the module fails to properly escape or filter user-provided input before rendering it in subsequent web pages. This allows an authenticated user with sufficient privileges to craft malicious payloads that get executed in the browsers of other users who view the affected section pages. The vulnerability is classified under CWE-79 as a failure to sanitize or incorrectly sanitize user-provided data, making it a classic cross-site scripting attack vector. The attack typically involves injecting script tags or other malicious HTML elements that can be executed in the context of other users' browsers.
The operational impact of CVE-2009-4429 extends beyond simple data theft or defacement, as it enables attackers to potentially execute arbitrary code in the context of authenticated users' sessions. This capability could lead to session hijacking, privilege escalation, or data exfiltration from the compromised Drupal site. The vulnerability is particularly concerning in environments where multiple administrators have access to the Sections module, as it could enable attackers to establish persistent backdoors or create malicious content that affects all site visitors. The attack chain typically involves an attacker with legitimate administrative access creating a malicious section name containing script code, which then gets executed whenever other users view the section or related pages. This aligns with ATT&CK technique T1059.007 for command and scripting interpreter, where the malicious code execution occurs through web-based interfaces.
Mitigation strategies for CVE-2009-4429 primarily focus on immediate patching and input validation improvements. Organizations should upgrade to Drupal Sections module versions 5.x-1.3 or 6.x-1.3, which contain the necessary security fixes. Additionally, implementing proper input sanitization and output encoding practices within the application code can prevent similar vulnerabilities from occurring in the future. Security measures such as content security policies, regular security audits, and privilege access reviews should be implemented to reduce the attack surface. The vulnerability demonstrates the importance of proper input validation in web applications and the need for comprehensive security testing of administrative interfaces. Organizations should also consider implementing web application firewalls and monitoring for suspicious administrative activities that might indicate exploitation attempts. The remediation process should include thorough testing to ensure that the patch does not introduce regressions in legitimate functionality while maintaining the security improvements.