CVE-2007-4089 in Vikingboard
Summary
by MITRE
Vikingboard 0.1.2 allows remote attackers to obtain sensitive information via the debug parameter to (1) forum.php, (2) cp.php, and possibly other unspecified components.
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Analysis
by VulDB Data Team • 01/06/2019
The vulnerability identified as CVE-2007-4089 affects Vikingboard version 0.1.2, a web-based bulletin board system that was widely used in early 2000s web applications. This security flaw represents a critical information disclosure vulnerability that allows remote attackers to access sensitive system information through manipulation of the debug parameter within specific application components. The vulnerability specifically targets the forum.php and cp.php files, with potential impacts extending to other unspecified components within the application framework. The affected software architecture demonstrates poor input validation and insufficient access control mechanisms that enable unauthorized information retrieval.
The technical implementation of this vulnerability stems from the application's lack of proper parameter sanitization and authentication checks when processing the debug parameter. When attackers submit malicious input through the debug parameter in the targeted files, the application fails to validate or restrict access to internal system information that should remain confidential. This flaw directly maps to CWE-200, which classifies information exposure vulnerabilities, and represents a classic case of insufficient input validation that allows attackers to bypass normal access controls. The vulnerability operates at the application layer and leverages the inherent trust placed in internal debugging mechanisms that should never be exposed to external users. The debug functionality, which is typically intended for developers and system administrators during development phases, becomes accessible to any remote user who can craft appropriate requests to the vulnerable endpoints.
The operational impact of this vulnerability extends beyond simple information disclosure, as the sensitive data potentially accessible through the debug parameter could include database connection details, server configuration information, user credentials, or application-specific variables that could facilitate further exploitation. Attackers could leverage this initial reconnaissance phase to gain deeper insights into the application architecture, database structure, and potential attack vectors. The vulnerability's remote nature means that attackers do not require physical access or local system privileges to exploit the flaw, making it particularly dangerous in publicly accessible web environments. This type of vulnerability aligns with ATT&CK technique T1213, which covers data from information repositories, and represents a fundamental failure in application security design that could enable more sophisticated attacks such as privilege escalation or data exfiltration.
Mitigation strategies for CVE-2007-4089 require immediate implementation of several security controls to address the root cause of the vulnerability. The primary remediation involves removing or disabling debug functionality from production environments and implementing proper input validation and access control mechanisms for all application parameters. Organizations should enforce strict parameter validation that rejects or sanitizes debug parameter values, particularly when these parameters are passed to sensitive application components. The implementation of proper authentication checks and authorization controls ensures that only authorized personnel can access debugging features within the application. Security measures should include disabling debug mode in production deployments, implementing web application firewalls to filter suspicious parameter values, and conducting thorough code reviews to identify similar vulnerabilities in other application components. Additionally, regular security assessments and vulnerability scanning should be conducted to prevent similar issues in other legacy systems, while adherence to secure coding practices and principle of least privilege access controls can help prevent future occurrences of such information disclosure vulnerabilities.