CVE-2008-4086 in Reciprocal Links Manager
Summary
by MITRE
SQL injection vulnerability in index.php in Reciprocal Links Manager 1.1 allows remote attackers to execute arbitrary SQL commands via the site parameter in an open action.
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Analysis
by VulDB Data Team • 11/03/2024
The vulnerability described in CVE-2008-4086 represents a critical SQL injection flaw within the Reciprocal Links Manager version 1.1 web application. This security weakness resides in the index.php file and specifically affects the handling of the site parameter during an open action. The vulnerability stems from insufficient input validation and sanitization practices, allowing malicious actors to inject arbitrary SQL commands into the application's database layer. The flaw enables remote attackers to manipulate the underlying database queries without authentication, potentially gaining unauthorized access to sensitive data or executing destructive operations on the database system.
The technical implementation of this vulnerability demonstrates a classic SQL injection attack vector where user-supplied input flows directly into SQL query construction without proper escaping or parameterization. The site parameter in the open action context serves as the injection point, where attacker-controlled data is concatenated into database queries without adequate sanitization. This design flaw violates fundamental security principles and creates an attack surface that can be exploited through various methods including union-based queries, time-based blind injection, or error-based exploitation techniques. The vulnerability directly maps to CWE-89 which defines SQL injection as the insertion of malicious SQL code into input fields for execution by the database.
From an operational impact perspective, this vulnerability poses significant risks to organizations utilizing the Reciprocal Links Manager 1.1 application. Attackers could extract confidential information including user credentials, database schema details, and business-critical data stored within the application's backend database. The remote execution capability means that attackers do not require physical access to the system or local network privileges to exploit the vulnerability. Successful exploitation could lead to complete database compromise, unauthorized data modification, or even system takeover if the database user has elevated privileges. The vulnerability also enables attackers to perform unauthorized operations such as creating new database users, modifying existing records, or executing system commands if the database supports such functionality.
The attack surface for this vulnerability aligns with several MITRE ATT&CK techniques including T1190 for exploitation of vulnerabilities and T1071.004 for application layer protocol usage. Security practitioners should consider implementing input validation at multiple layers including application-level sanitization, database query parameterization, and web application firewall rules to mitigate this risk. The remediation approach should focus on implementing proper input validation and sanitization mechanisms, utilizing prepared statements or parameterized queries, and conducting thorough code reviews to identify similar patterns. Additionally, organizations should implement network segmentation, access controls, and regular security assessments to reduce the overall attack surface and improve defensive measures against similar SQL injection vulnerabilities.
The broader implications of this vulnerability highlight the importance of secure coding practices and the need for comprehensive security testing throughout the software development lifecycle. This flaw demonstrates how simple input handling errors can create severe security consequences and emphasizes the necessity of following security best practices such as the OWASP Top Ten guidelines and secure coding standards. Organizations should prioritize vulnerability management programs that include regular security assessments, penetration testing, and code reviews to identify and remediate similar issues before they can be exploited in production environments. The vulnerability also underscores the critical importance of keeping web applications updated with the latest security patches and implementing defense-in-depth strategies to protect against various attack vectors including SQL injection threats.