CVE-2006-2837 in Techno Dreams Guest Book
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Techno Dreams Guest Book allows remote attackers to inject arbitrary web script or HTML via certain comment fields in the "Sign Our GuestBook" page, probably the x_Comments parameter to guestbookadd.asp.
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Analysis
by VulDB Data Team • 09/18/2017
The vulnerability described in CVE-2006-2837 represents a classic cross-site scripting flaw within the Techno Dreams Guest Book web application. This type of vulnerability falls under the CWE-79 category, which specifically addresses improper neutralization of input during web page generation, making it a critical concern for web application security. The vulnerability exists in the guest book's comment submission functionality, where user input is not properly sanitized or validated before being rendered back to other users. The attack vector specifically targets the x_Comments parameter within the guestbookadd.asp script, which processes guest book entries and handles comment submissions from visitors.
The technical exploitation of this vulnerability occurs when an attacker crafts malicious input containing embedded script code within the comment field of the guest book. When other users view the malicious comment, their browsers execute the injected scripts in the context of the vulnerable web application. This cross-site scripting attack can potentially lead to session hijacking, credential theft, or redirection to malicious sites. The vulnerability's impact is amplified by the fact that guest books are typically public-facing components where any visitor can submit content, making the attack surface particularly broad and accessible to remote attackers.
The operational implications of this vulnerability extend beyond simple script injection, as it can enable attackers to compromise the integrity of the guest book and potentially the broader web application. Attackers can leverage this vulnerability to perform session manipulation attacks, steal cookies from authenticated users, or inject malicious content that could propagate to other users. The vulnerability demonstrates a fundamental flaw in input validation and output encoding practices within the application's codebase, representing a failure to implement proper security controls such as those recommended in the OWASP Top Ten. The guest book's design appears to lack input sanitization mechanisms, allowing raw user input to be directly embedded into web pages without proper HTML escaping or script validation.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding measures. The most effective approach involves sanitizing all user-provided input through strict validation and encoding processes before rendering any content back to users. This includes implementing proper HTML escaping for all dynamic content, utilizing content security policies to restrict script execution, and ensuring that the application follows secure coding practices as outlined in the OWASP Secure Coding Practices. Additionally, the application should implement proper parameter validation for the x_Comments parameter to reject or sanitize any input containing potentially malicious script tags or suspicious characters. The remediation efforts should also include regular security testing and code reviews to identify similar vulnerabilities throughout the application's codebase. Organizations should consider implementing web application firewalls and runtime application self-protection mechanisms to provide additional layers of defense against such attacks. The vulnerability serves as a reminder of the critical importance of secure input handling and output encoding in preventing cross-site scripting attacks, with the ATT&CK framework categorizing this as a web application attack pattern that should be actively mitigated through proper security controls and defensive measures.