CVE-2005-3514 in Chipmunk Forum
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Chipmunk Forum script allow remote attackers to inject arbitrary web script or HTML via the forumID parameter to (1) newtopic.php, (2) quote.php, (3) index.php, and (4) reply.php.
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Analysis
by VulDB Data Team • 05/14/2025
The vulnerability described in CVE-2005-3514 represents a critical cross-site scripting flaw affecting the Chipmunk Forum script, a widely used open-source discussion platform. This vulnerability resides in the handling of user input parameters, specifically the forumID parameter, which is processed across four key script files including newtopic.php, quote.php, index.php, and reply.php. The flaw enables remote attackers to execute malicious web scripts or HTML code within the context of other users' browsers, potentially compromising the security of the entire forum ecosystem.
The technical implementation of this vulnerability stems from inadequate input validation and output sanitization within the Chipmunk Forum application. When users submit data through the affected pages, the forumID parameter is not properly sanitized before being rendered back to users or stored in the database. This allows attackers to inject malicious payloads that persist and execute whenever other users view the affected forum content. The vulnerability operates under CWE-79 which specifically addresses Cross-Site Scripting flaws, where applications fail to properly validate or escape user-supplied data before incorporating it into dynamically generated web pages.
The operational impact of this vulnerability extends beyond simple script injection, creating potential pathways for more sophisticated attacks within the forum environment. Attackers could leverage this vulnerability to steal session cookies, redirect users to malicious sites, deface forum content, or harvest sensitive information from authenticated users. The persistent nature of the vulnerability across multiple entry points increases the attack surface significantly, as each of the affected scripts represents a potential vector for exploitation. This weakness directly violates the principle of least privilege and proper input validation that should be implemented in web applications to prevent unauthorized code execution.
Mitigation strategies for CVE-2005-3514 should focus on immediate input sanitization and output encoding measures across all affected script files. The most effective remediation involves implementing proper parameter validation to reject or escape special characters in the forumID parameter before processing or displaying user input. Security patches should enforce strict input filtering mechanisms that prevent the execution of HTML tags and JavaScript code within forum parameters. Organizations should also implement Content Security Policy headers to add an additional layer of protection against XSS attacks. The remediation process aligns with ATT&CK technique T1203 which involves exploitation of web applications through injection attacks, making it essential for system administrators to apply patches promptly and conduct thorough security assessments of their forum installations. Regular security monitoring and input validation testing should be implemented to prevent similar vulnerabilities from emerging in future versions of the forum software.