CVE-2012-2726 in Protest
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Protest module 6.x-1.x before 6.x-1.2 or 7.x-1.x before 7.x-1.2 for Drupal allows remote authenticated users with the "administer protest" permission to inject arbitrary web script or HTML via the protest_body parameter.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 02/17/2019
The CVE-2012-2726 vulnerability represents a critical cross-site scripting flaw within the Drupal Protest module, affecting versions prior to 6.x-1.2 and 7.x-1.2. This vulnerability specifically targets the protest_body parameter, which serves as a user input field for content management within the Drupal content management system. The flaw exists in the module's handling of user-supplied data, creating an avenue for malicious actors to execute arbitrary web scripts or HTML code within the context of affected websites. The vulnerability is particularly concerning because it requires only authenticated access with the "administer protest" permission, making it exploitable by users who already possess administrative privileges within the Drupal environment.
The technical implementation of this vulnerability stems from inadequate input validation and output sanitization within the Protest module's processing logic. When administrators submit content through the protest_body parameter, the module fails to properly escape or filter special characters that could be interpreted as HTML or JavaScript code. This improper handling allows attackers to inject malicious payloads that execute in the browsers of other users who view the affected content. The vulnerability falls under CWE-79, which specifically addresses Cross-Site Scripting flaws, and demonstrates a classic case of insufficient data sanitization in web applications. The attack vector is particularly dangerous because it leverages existing administrative access, potentially allowing for more sophisticated attacks including session hijacking or data exfiltration.
The operational impact of this vulnerability extends beyond simple script injection, as it provides attackers with the capability to manipulate the Drupal administrative interface and potentially compromise the entire website. An attacker with the required permissions could inject malicious scripts that redirect users to phishing sites, steal administrative sessions, or even modify content in ways that could damage the website's reputation or functionality. The vulnerability's exploitation could lead to persistent XSS attacks that affect multiple users over extended periods, as the injected scripts would execute whenever affected pages are loaded. This type of vulnerability directly aligns with ATT&CK technique T1566, which covers the use of malicious content to gain access to systems, and T1547, which addresses the execution of malicious code through web interfaces. The risk is amplified in environments where administrators frequently interact with user-generated content or where the protest module is widely used for community engagement.
Organizations affected by CVE-2012-2726 should immediately implement the available security patches for both Drupal 6.x and 7.x versions, specifically upgrading to Protest module versions 6.x-1.2 or 7.x-1.2 respectively. Beyond patching, administrators should conduct thorough security reviews of all user inputs and implement comprehensive input validation and output encoding mechanisms. The vulnerability highlights the importance of maintaining up-to-date software versions and following secure coding practices that include proper sanitization of user inputs. Security teams should also implement monitoring solutions to detect unusual activities in administrative interfaces and establish regular security audits to identify similar vulnerabilities across the entire Drupal installation. The incident underscores the critical nature of addressing vulnerabilities in content management systems, particularly those with administrative access capabilities, as they can serve as entry points for broader system compromises.