CVE-2006-2651 in Vacation Rental Script
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in Vacation Rental Script 1.0 allows remote attackers to inject arbitrary web script or HTML via the obj parameter.
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Analysis
by VulDB Data Team • 09/05/2017
The vulnerability identified as CVE-2006-2651 represents a classic cross-site scripting flaw within the Vacation Rental Script version 1.0, specifically affecting the index.php file. This security weakness enables malicious actors to execute arbitrary web scripts or HTML code through manipulation of the obj parameter, demonstrating a critical failure in input validation and output sanitization mechanisms. The vulnerability resides in the application's inability to properly filter or escape user-supplied data before incorporating it into dynamically generated web content, creating an exploitable pathway for attackers to inject malicious payloads.
The technical nature of this vulnerability aligns with CWE-79, which specifically addresses cross-site scripting weaknesses in web applications. This classification indicates that the flaw allows an attacker to inject client-side scripts into web pages viewed by other users, potentially leading to session hijacking, data theft, or unauthorized actions performed on behalf of victims. The obj parameter serves as the primary attack vector, where unsanitized input is directly reflected in the application's output without proper HTML encoding or script validation, making it susceptible to exploitation through various XSS payload techniques including JavaScript execution, cookie theft, and redirection attacks.
The operational impact of this vulnerability extends beyond simple data corruption, as it fundamentally compromises the security posture of the vacation rental website. Attackers can leverage this weakness to steal user session cookies, redirect visitors to malicious sites, or inject phishing content that appears legitimate to users. The consequences include potential unauthorized access to user accounts, compromise of personal information, and damage to the website's reputation. This vulnerability particularly affects the script's user authentication and session management systems, as successful exploitation could enable attackers to impersonate legitimate users and access restricted functionalities.
Mitigation strategies for CVE-2006-2651 must address both immediate remediation and long-term architectural improvements to prevent similar vulnerabilities. The primary fix involves implementing proper input validation and output encoding mechanisms, ensuring that all user-supplied parameters including the obj parameter undergo strict sanitization before being processed or displayed. This includes applying HTML entity encoding to prevent script execution in web contexts, implementing Content Security Policy headers to restrict script loading sources, and utilizing parameterized queries or validated input filters to prevent malicious data injection. Additionally, regular security code reviews and automated vulnerability scanning should be integrated into the development lifecycle to identify and remediate similar XSS vulnerabilities before they can be exploited in production environments. The remediation approach should follow established security frameworks such as OWASP Top Ten recommendations and adhere to secure coding practices that prevent the injection of untrusted data into web application outputs, thereby reducing the attack surface and strengthening overall application security posture against persistent threats.