CVE-2010-3424 in IP.Board
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in admin/sources/classes/bbcode/custom/defaults.php in Invision Power Board (IP.Board) 3.1.2 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 01/21/2025
The vulnerability identified as CVE-2010-3424 represents a critical cross-site scripting flaw within Invision Power Board version 3.1.2, specifically located in the file admin/sources/classes/bbcode/custom/defaults.php. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and dangerous web application security flaws. The issue manifests when the application fails to properly sanitize user input before rendering it in web pages, creating an avenue for malicious actors to inject arbitrary JavaScript code or HTML content into the application's output.
The technical nature of this vulnerability stems from insufficient input validation and output encoding mechanisms within the BBCode parsing system of IP.Board. When administrators or users interact with the board's administrative interface, particularly when managing custom BBCode definitions, the application processes user-supplied data without adequate sanitization. This allows attackers to craft malicious payloads that execute in the context of other users' browsers, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of victims. The unspecified vectors indicate that multiple entry points within the BBCode processing functionality could be exploited, making the attack surface broader than initially apparent.
The operational impact of this vulnerability is significant for organizations utilizing IP.Board 3.1.2, as it provides remote attackers with a means to compromise the security of the entire platform. Successful exploitation could enable attackers to steal administrator credentials, modify forum content, inject malicious advertisements, or redirect users to phishing sites. The vulnerability affects not just individual user sessions but potentially the entire community platform, as the injected scripts would execute for all users who view affected content. This makes it particularly dangerous in environments where the forum serves as a central communication hub for organizations, educational institutions, or communities with sensitive information exchanges.
Organizations should implement immediate mitigations including upgrading to the latest version of IP.Board where this vulnerability has been patched, applying the official security patches released by Invision Power Board, and implementing proper input validation measures. The mitigation strategy should also include deploying web application firewalls that can detect and block XSS attack patterns, implementing content security policies to restrict script execution, and conducting thorough security reviews of all user input handling mechanisms. Additionally, organizations should consider implementing proper output encoding for all dynamic content and regularly audit their applications for similar vulnerabilities using automated scanning tools and manual penetration testing techniques aligned with the ATT&CK framework's web application exploitation tactics.