CVE-2002-0329 in Forums 2000
Summary
by MITRE
Cross-site scripting vulnerability in Snitz Forums 2000 3.3.03 and earlier allows remote attackers to execute arbitrary script as other Forums 2000 users via Javascript in an IMG tag.
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Analysis
by VulDB Data Team • 09/19/2025
The vulnerability identified as CVE-2002-0329 represents a critical cross-site scripting flaw within Snitz Forums 2000 version 3.3.03 and earlier implementations. This security weakness resides in the forum software's inadequate input validation mechanisms, specifically failing to properly sanitize user-supplied data before rendering it within web pages. The vulnerability manifests when malicious actors exploit the absence of proper sanitization controls to inject malicious javascript code through image tags, creating a persistent threat vector that affects all users interacting with the compromised forum environment.
The technical exploitation of this vulnerability occurs through the manipulation of the IMG tag attribute within forum posts or user profiles, allowing attackers to embed javascript payloads that execute within the context of other users' browsers. This flaw directly maps to CWE-79, which categorizes cross-site scripting vulnerabilities as weaknesses in web applications that allow attackers to inject malicious scripts into web pages viewed by other users. The vulnerability operates at the application layer, specifically targeting the user input handling and output rendering processes within the forum software's content management system, making it particularly dangerous due to its ability to affect the entire user base simultaneously.
The operational impact of CVE-2002-0329 extends beyond simple script execution, as it enables attackers to potentially steal session cookies, hijack user accounts, redirect victims to malicious websites, or perform actions on behalf of authenticated users. This vulnerability creates a persistent threat that can be leveraged for account takeovers, data exfiltration, and the deployment of additional malicious payloads within the compromised forum environment. The attack vector specifically targets the trust relationship between the forum software and its users, undermining the security assumptions that users make when engaging with the platform.
Organizations affected by this vulnerability should immediately implement input validation controls that sanitize all user-supplied data before processing, particularly focusing on image tag attributes and other HTML elements that could contain malicious javascript. The recommended mitigation strategies include implementing comprehensive output encoding, deploying web application firewalls, and upgrading to patched versions of Snitz Forums 2000. Security measures should align with ATT&CK technique T1531 which addresses the exploitation of web application vulnerabilities for privilege escalation and persistent access. Additionally, organizations should conduct regular security assessments and implement proper content security policies to prevent unauthorized script execution within their web applications.