CVE-2005-2569 in FunkBoard
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in FunkBoard 0.66CF, and possibly earlier versions, allow remote attackers to inject arbitrary web script or HTML via the fbusername or fbpassword parameter to (1) editpost.php, (2) prefs.php, (3) newtopic.php, (4) reply.php, or (5) profile.php, the (6) fbusername, (7) fmail, (8) www, (9) icq, (10) yim, (11) location, (12) sex, (13) interebbies, (14) sig or (15) aim parameter to register.php, or (16) subject parameter to newtopic.php.
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Analysis
by VulDB Data Team • 07/13/2025
The vulnerability described in CVE-2005-2569 represents a critical cross-site scripting flaw affecting FunkBoard version 0.66CF and potentially earlier releases. This issue stems from inadequate input validation and sanitization mechanisms within the web application's handling of user-supplied data. The vulnerability manifests across multiple script files including editpost.php, prefs.php, newtopic.php, reply.php, profile.php, and register.php, demonstrating a systemic weakness in the application's security architecture. The affected parameters span a broad spectrum of user input fields, from authentication credentials to personal profile information, indicating that the flaw permeates the application's user interaction points.
The technical exploitation of this vulnerability occurs when remote attackers inject malicious script code through the specified parameters, allowing them to bypass the application's security controls and execute arbitrary web scripts in the context of other users' browsers. The vulnerability specifically targets the fbusername and fbpassword parameters in several files, while also affecting various profile fields in the registration process including fbusername, fmail, www, icq, yim, location, sex, interebbies, sig, and aim parameters. The attack vector is particularly concerning as it affects both authentication and profile management functionality, potentially enabling attackers to escalate privileges or steal session information. This weakness directly aligns with CWE-79 which categorizes cross-site scripting vulnerabilities as a critical web application security flaw.
The operational impact of this vulnerability is severe and multifaceted. Attackers can leverage these XSS flaws to perform session hijacking, steal user credentials, redirect victims to malicious websites, or inject malware into the victim's browser environment. The broad scope of affected parameters means that successful exploitation could compromise user accounts, manipulate profile information, or even allow attackers to post malicious content to forums. The vulnerability's presence in both authentication and profile management scripts creates opportunities for attackers to establish persistent access or conduct more sophisticated attacks such as credential theft or data exfiltration. Organizations using affected versions of FunkBoard face significant risk of unauthorized access and potential data breaches.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. The most effective approach involves sanitizing all user-supplied input through proper encoding techniques such as HTML entity encoding, JavaScript escaping, and regular expression filtering to prevent malicious scripts from being executed. Implementing proper content security policies and using secure coding practices to validate and sanitize all parameters before processing would address the root cause of this vulnerability. Additionally, organizations should consider implementing web application firewalls, conducting regular security assessments, and ensuring that all users are updated to patched versions of FunkBoard. The remediation efforts should align with industry best practices for web application security and address the specific CWE-79 classification through comprehensive input validation and output encoding controls.