CVE-2005-4398 in ASP.NET
Summary
by MITRE
** DISPUTED ** NOTE: the vendor has disputed this issue. Cross-site scripting (XSS) vulnerability in lemoon 2.0 and earlier allows remote attackers to inject arbitrary web script or HTML via unspecified search parameters, possibly the q parameter. NOTE: the vendor has disputed this issue, saying "Sites are built on top of ASP.NET and you use lemoon core objects to easily manage and render content. The XSS vuln. you are referring to exists in one of our public sites built on lemoon i.e. a custom made site (as all sites are). The problem exists in a UserControl that handles form input and is in no way related to the lemoon core product."
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Analysis
by VulDB Data Team • 08/08/2024
The vulnerability identified as CVE-2005-4398 represents a disputed cross-site scripting issue within lemoon 2.0 and earlier versions. This classification places the finding within the purview of CWE-79, which specifically addresses Cross-Site Scripting vulnerabilities where untrusted data is improperly incorporated into web page content. The reported flaw manifests through unspecified search parameters, with particular mention of the q parameter as a potential vector for malicious script injection. Such vulnerabilities fundamentally compromise the integrity of web applications by allowing attackers to execute arbitrary web scripts or HTML code within the context of a victim's browser session.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding mechanisms within the lemoon framework. When search parameters are processed without proper sanitization, malicious users can embed script tags or other HTML elements that get executed in the browser of unsuspecting users. This type of flaw directly enables attackers to perform session hijacking, deface websites, steal sensitive information, or redirect users to malicious domains. The vulnerability's classification as XSS aligns with ATT&CK technique T1059.001, which covers Command and Scripting Interpreter, specifically focusing on the execution of malicious scripts through web-based interfaces.
The vendor's response to this disputed issue provides crucial context regarding the actual implementation details. The vendor clarifies that the vulnerability exists within a specific public site built using lemoon rather than within the core lemoon product itself. This distinction is significant as it indicates the flaw was introduced through custom development practices rather than inherent product weaknesses. The vendor specifically identifies that the issue occurs within a UserControl component that handles form input, suggesting that the vulnerability stems from improper handling of user-supplied data within the custom site implementation. This explanation aligns with common XSS vulnerabilities that occur when developers fail to properly escape or validate user input before rendering it in web pages. The vendor's position that this issue is not related to the lemoon core product implies that standard lemoon installations would not be vulnerable, but custom implementations that improperly handle form data could be susceptible to such attacks.
The operational impact of this vulnerability, while disputed by the vendor, remains significant in environments where custom lemoon implementations are deployed. Organizations using lemoon-based solutions must carefully evaluate their custom site development practices to ensure proper input validation and output encoding are implemented. The distinction between core product vulnerabilities and custom implementation flaws emphasizes the importance of secure coding practices throughout the entire development lifecycle. Security teams should conduct thorough code reviews of custom lemoon implementations, particularly focusing on form handling and input processing components, to identify and remediate potential XSS vulnerabilities. The vendor's response also highlights the need for proper security testing of custom-built web applications that utilize third-party frameworks, as vulnerabilities in custom implementations can create security risks even when the underlying framework itself is secure.