CVE-2012-1604 in NextBBS
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in NextBBS 0.6 allows remote attackers to inject arbitrary web script or HTML via the do parameter to index.php.
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Analysis
by VulDB Data Team • 02/02/2025
The vulnerability identified as CVE-2012-1604 represents a critical cross-site scripting flaw discovered in NextBBS version 0.6, a web-based bulletin board system that was widely used for online forums and community discussions. This vulnerability resides within the application's input validation mechanisms, specifically in how the system processes user-supplied data through the do parameter in the index.php file. The flaw allows malicious actors to inject arbitrary web scripts or HTML code directly into the application's response, creating a persistent security risk for all users interacting with the affected platform.
The technical nature of this vulnerability aligns with CWE-79, which categorizes cross-site scripting as a code injection flaw where untrusted data is improperly integrated into web pages without adequate sanitization or encoding. The vulnerability occurs because NextBBS fails to properly validate or escape user input before rendering it within the web interface. When an attacker crafts a malicious payload and submits it through the do parameter, the application processes this input without sufficient security controls, allowing the injected script to execute in the context of other users' browsers. This creates a dangerous attack surface where session cookies, personal information, or other sensitive data could be harvested by unauthorized parties.
The operational impact of CVE-2012-1604 extends beyond simple script injection, as it enables attackers to perform various malicious activities including session hijacking, defacement of forum content, redirection to phishing sites, and data exfiltration. An attacker could craft a payload that steals authentication cookies from unsuspecting users, effectively taking over their accounts and gaining unauthorized access to private messages, user profiles, and administrative functions. The vulnerability also permits the execution of malicious JavaScript code that could modify forum content, inject advertisements, or even establish persistent backdoors within the affected system. This makes the flaw particularly dangerous in community-driven platforms where users trust the integrity of the content and the security of their interactions.
Organizations and security practitioners should implement multiple layers of defense to mitigate this vulnerability, including input validation, output encoding, and the implementation of proper content security policies. The recommended remediation involves sanitizing all user inputs, particularly those processed through the do parameter in index.php, by applying strict validation rules and HTML escaping techniques before rendering any user-supplied content. Additionally, the application should implement proper HTTP headers such as Content-Security-Policy to prevent unauthorized script execution. According to ATT&CK framework category T1190, this vulnerability maps to the exploitation of web application vulnerabilities through malicious input, while the mitigation strategies align with defensive techniques such as input validation and output encoding. Organizations should also consider implementing web application firewalls and regular security assessments to detect and prevent similar vulnerabilities in other components of their web infrastructure.