CVE-2012-6671 in Forumon RPG Module
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in actions/main.php in the DragonByte Technologies Forumon RPG module before 1.0.8 for vBulletin when creating a new monster, allow remote attackers to inject arbitrary web script or HTML via the (1) monster[title] or (2) monster[description] parameters.
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Analysis
by VulDB Data Team • 12/22/2019
The vulnerability identified as CVE-2012-6671 represents a critical cross-site scripting flaw within the DragonByte Technologies Forumon RPG module for vBulletin platforms. This security weakness affects versions prior to 1.0.8 and specifically targets the actions/main.php script that handles monster creation functionality. The vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly filter user-supplied data before it is rendered back to users within the web application interface.
The technical exploitation of this vulnerability occurs through two primary attack vectors involving the monster[title] and monster[description] parameters. Attackers can craft malicious payloads containing embedded javascript code or html elements that get executed in the context of other users' browsers when they view the affected monster entries. This type of vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting flaws in web applications. The attack requires no special privileges and can be executed by any remote user who has access to the monster creation functionality within the forum module.
The operational impact of this vulnerability extends beyond simple data theft or defacement. When exploited, these XSS flaws can enable attackers to hijack user sessions, steal sensitive authentication tokens, redirect victims to malicious websites, or perform unauthorized actions on behalf of authenticated users. The DragonByte Technologies Forumon RPG module serves as a gaming enhancement for vBulletin forums, making it particularly attractive to attackers who can leverage the vulnerability to compromise the entire forum ecosystem. This vulnerability directly maps to several ATT&CK techniques including T1531 for credential access and T1059 for command and scripting interpreter usage, as attackers can establish persistent access through the malicious scripts injected into the forum.
Mitigation strategies for CVE-2012-6671 require immediate implementation of proper input sanitization and output encoding practices. Organizations should upgrade to version 1.0.8 or later of the DragonByte Technologies Forumon RPG module where the vulnerability has been patched. Additionally, implementing comprehensive content security policies, employing proper parameter validation, and utilizing web application firewalls can provide additional defense layers. The vulnerability demonstrates the critical importance of input validation in web applications and aligns with security best practices outlined in the OWASP Top Ten project, specifically addressing the prevention of XSS attacks through proper data sanitization and context-appropriate output encoding.