CVE-2003-1197 in Forums
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php for Ledscripts.com LedForums Beta 1 allows remote attackers to inject arbitrary web script or HTML via the (1) top_message parameter or (2) topic field of a new thread.
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Analysis
by VulDB Data Team • 01/03/2025
The vulnerability described in CVE-2003-1197 represents a classic cross-site scripting flaw affecting the LedForums Beta 1 software developed by Ledscripts.com. This security weakness resides within the index.php script and demonstrates a critical failure in input validation and output sanitization mechanisms. The vulnerability specifically targets two distinct input vectors: the top_message parameter and the topic field used when creating new threads within the forum interface. These parameters are processed without adequate sanitization, creating an environment where malicious actors can inject arbitrary web scripts or HTML code that will execute in the context of other users' browsers.
The technical nature of this vulnerability aligns with CWE-79, which categorizes cross-site scripting as a code injection flaw where untrusted data is embedded into web pages viewed by other users. This particular implementation allows remote attackers to exploit the system by crafting malicious payloads that leverage the vulnerable input fields. When legitimate users view pages containing the injected content, their browsers execute the malicious scripts, potentially leading to session hijacking, credential theft, or further exploitation of the victim's browser context. The vulnerability's impact is amplified by the fact that it affects core forum functionality where users naturally input content, making it particularly dangerous in collaborative environments where user-generated content is expected and trusted.
From an operational perspective, this vulnerability creates significant risks for forum administrators and users alike. Attackers can exploit the XSS flaw to steal session cookies, redirect users to malicious sites, or deface the forum content with persistent malicious scripts. The exposure of this vulnerability in a beta release indicates poor security testing practices and highlights the importance of input validation in web applications. The attack surface is particularly concerning as it affects both the display of existing messages and the creation of new content, meaning that both viewing and posting functionality can be compromised. This type of vulnerability directly violates the principle of least privilege and demonstrates a failure in the application's security design where user input is not properly sanitized before being rendered to other users.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input sanitization and output encoding mechanisms. The most effective approach involves sanitizing all user-supplied input through proper validation and encoding before processing or storing the data. This includes implementing proper HTML escaping for all dynamic content rendered to users, which would prevent malicious scripts from executing in the browser context. Security measures should also include regular security testing of web applications, including automated scanning and manual penetration testing to identify similar vulnerabilities. The implementation of Content Security Policy headers can provide additional protection against script execution, while proper input validation frameworks should be employed to ensure that all user-entered data is properly sanitized before being processed. Organizations should also consider implementing web application firewalls and monitoring systems to detect and prevent exploitation attempts. This vulnerability serves as a reminder of the critical importance of security considerations in all phases of software development, particularly in applications that process user-generated content, and demonstrates how seemingly minor oversights in input handling can lead to significant security risks. The vulnerability's classification under ATT&CK technique T1059.005 for script injection further emphasizes the need for comprehensive protection against malicious code execution in web environments.