CVE-2005-3422 in ASP Fast Forum
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in error.asp in ASP Fast Forum allows remote attackers to inject arbitrary web script or HTML via the error parameter.
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Analysis
by VulDB Data Team • 06/20/2024
The vulnerability identified as CVE-2005-3422 represents a classic cross-site scripting flaw within the ASP Fast Forum application's error handling mechanism. This issue specifically affects the error.asp component where user input is not properly sanitized before being rendered back to web browsers. The vulnerability stems from the application's failure to validate or escape the error parameter, which is directly incorporated into the web response without adequate security controls. This creates an opportunity for malicious actors to inject arbitrary web scripts or HTML content that executes within the context of other users' browsers when they encounter the error page.
The technical implementation of this vulnerability aligns with CWE-79, which defines cross-site scripting as a weakness that occurs when an application includes untrusted data in a new web page without proper validation or escaping. The flaw manifests when the error parameter from user input is directly embedded into the HTML output of the error.asp page, allowing attackers to craft malicious payloads that exploit the lack of input sanitization. Attackers can leverage this vulnerability by constructing specially crafted URLs containing script tags or HTML elements within the error parameter, which then get executed when the vulnerable page is accessed by other users.
The operational impact of this vulnerability extends beyond simple script execution, as it enables attackers to perform various malicious activities including session hijacking, credential theft, and redirection to malicious websites. When exploited, the XSS vulnerability allows attackers to steal cookies, session tokens, or other sensitive information from authenticated users who visit the compromised error page. The attack vector requires no special privileges or authentication, making it particularly dangerous as it can be exploited through social engineering or automated scanning tools. This vulnerability undermines the fundamental security of web applications by allowing persistent threats to be injected into legitimate error reporting mechanisms that users expect to be safe.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding practices. Organizations should employ proper parameter sanitization techniques that escape special characters and validate input data against expected formats before processing. The solution involves implementing a robust encoding mechanism that converts potentially dangerous characters into their HTML entity equivalents, ensuring that any user-supplied data cannot be interpreted as executable code. Additionally, developers should adopt secure coding practices that follow the principle of least privilege and implement proper error handling that does not expose raw user input to end users. Security measures should include regular code reviews, automated vulnerability scanning, and the implementation of web application firewalls to detect and prevent such attacks. This vulnerability also highlights the importance of following OWASP Top Ten security guidelines and implementing defense-in-depth strategies to protect against client-side attacks that can compromise user sessions and data integrity.