CVE-2006-6892 in OvBB
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the GetLocation function in online.php in Jonathon J. Freeman OvBB 0.13a allows remote attackers to inject arbitrary web script or HTML via the aRequest variable.
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Analysis
by VulDB Data Team • 08/13/2018
The vulnerability described in CVE-2006-6892 represents a classic cross-site scripting flaw within the Jonathon J. Freeman OvBB 0.13a bulletin board system. This security weakness resides in the GetLocation function implementation within the online.php file, where user input is not properly sanitized before being rendered in web responses. The specific attack vector involves the aRequest variable which serves as an entry point for malicious script injection attempts. This type of vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and well-documented web application security flaws in the industry.
The technical exploitation of this vulnerability occurs when remote attackers craft malicious input containing script code within the aRequest parameter and submit it to the vulnerable application. When the GetLocation function processes this input without adequate validation or output encoding, the malicious script gets executed in the context of other users' browsers who view the affected page. This creates a persistent threat where attackers can steal session cookies, deface web pages, redirect users to malicious sites, or perform actions on behalf of authenticated users. The vulnerability demonstrates poor input handling practices and highlights the critical importance of implementing proper data sanitization mechanisms in web applications.
The operational impact of this vulnerability extends beyond simple script execution to encompass potential full system compromise through session hijacking and user impersonation. Attackers can leverage this XSS flaw to establish persistent access to user accounts, particularly if the application handles sensitive information or maintains privileged sessions. The vulnerability affects the integrity and confidentiality of the web application's user data, potentially exposing personal information, private communications, and administrative credentials. According to ATT&CK framework, this represents a technique categorized under T1059.007 Command and Scripting Interpreter: JavaScript, where adversaries use client-side scripting to execute malicious code within user browsers.
Mitigation strategies for CVE-2006-6892 should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. The most effective remediation involves sanitizing all user-supplied input through proper escaping functions before rendering content in web responses, particularly when dealing with dynamic variables like the aRequest parameter. Developers should implement Content Security Policy headers to limit script execution contexts and employ proper HTML encoding techniques when displaying user data. Additionally, the application should validate input against known good patterns and reject any content containing potentially dangerous script elements. The vulnerability underscores the necessity of following secure coding practices as outlined in OWASP Top Ten and other industry standards for preventing injection flaws in web applications. Regular security audits and input validation testing should be conducted to ensure that similar vulnerabilities do not persist in the codebase.