CVE-2005-0629 in Fourtwosevenbb
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in profile.php in 427BB 2.2 allow remote attackers to inject arbitrary web script or HTML via the (1) user or (2) Avatar parameters.
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Analysis
by VulDB Data Team • 03/04/2025
The vulnerability identified as CVE-2005-0629 represents a critical cross-site scripting flaw within the 427BB 2.2 bulletin board software, specifically affecting the profile.php script. This issue stems from inadequate input validation and output sanitization mechanisms that fail to properly filter user-supplied data before it is rendered back to web browsers. The vulnerability manifests when attackers can inject malicious scripts through two distinct parameter vectors: the user parameter and the Avatar parameter, both of which are processed without sufficient security controls to prevent code injection attacks. Such vulnerabilities fall under the category of CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a fundamental weakness in web application security that enables attackers to execute malicious client-side scripts in the context of other users' sessions.
The technical exploitation of this vulnerability occurs when an attacker crafts malicious input containing script code within either the user or Avatar parameters and submits it through the profile.php endpoint. When the application processes this input without proper sanitization and subsequently displays it on the web page, the embedded scripts execute within the browser context of any user who views the affected profile page. This allows attackers to potentially steal session cookies, redirect users to malicious sites, deface the bulletin board interface, or perform other malicious activities that leverage the trust relationship between the victim browser and the vulnerable application. The attack vector operates entirely through web-based interactions and requires no special privileges or access to the server infrastructure itself.
The operational impact of this vulnerability extends beyond simple data corruption or unauthorized access, as it enables sophisticated social engineering attacks and persistent security breaches within the bulletin board environment. Attackers can leverage these XSS vulnerabilities to compromise user accounts, manipulate forum content, spread malware, or conduct phishing campaigns that appear legitimate to forum members. The vulnerability affects the entire user base of the 427BB 2.2 system, as any user profile page containing malicious input becomes a potential vector for attack. This creates a cascading security risk where compromised user sessions can be used to gain unauthorized access to sensitive forum data and functionality, potentially leading to complete system compromise or data exfiltration.
Organizations and system administrators should implement immediate mitigations including input validation, output encoding, and proper parameter sanitization to address this vulnerability. The recommended approach involves implementing strict input validation that rejects or sanitizes potentially malicious characters and patterns before processing user data. Additionally, output encoding should be applied when displaying user-supplied content to prevent script execution in browser contexts. Security measures should also include regular security audits, web application firewalls, and comprehensive patch management procedures to ensure all known vulnerabilities are addressed promptly. This vulnerability aligns with ATT&CK technique T1566.001 - Phishing: Spearphishing Attachment, as it enables attackers to deliver malicious payloads through compromised user profiles and forum interactions, making it a significant concern for any organization relying on bulletin board systems for communication and collaboration.