CVE-2006-1553 in VSNS Lemon
Summary
by MITRE
SQL injection vulnerability in functions/final_functions.php in VSNS Lemon 3.2.0, with magic_quotes_gpc disabled, allows remote attackers to execute arbitrary SQL commands via the id parameter.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 07/08/2021
The vulnerability identified as CVE-2006-1553 represents a critical SQL injection flaw within the VSNS Lemon 3.2.0 web application framework. This vulnerability specifically targets the functions/final_functions.php file where user input is improperly handled without adequate sanitization measures. The flaw manifests when the application processes the id parameter through a web interface, creating an exploitable condition that enables malicious actors to inject arbitrary SQL commands into the backend database system. The vulnerability is particularly severe because it occurs in an environment where magic_quotes_gpc is disabled, removing a fundamental protection mechanism that would otherwise escape special characters in user input. This configuration leaves the application completely exposed to SQL injection attacks as no automatic escaping of potentially dangerous characters occurs during input processing.
The technical exploitation of this vulnerability follows a well-established pattern that aligns with CWE-89, which specifically addresses SQL injection vulnerabilities in software applications. Attackers can manipulate the id parameter by injecting malicious SQL syntax that bypasses normal input validation procedures, allowing them to execute unauthorized database queries. The vulnerability operates at the application layer where user-supplied data flows directly into database execution contexts without proper parameterization or input filtering. This flaw enables attackers to perform various malicious activities including but not limited to data extraction, data modification, unauthorized access to sensitive information, and potentially complete system compromise through database-level privileges escalation. The attack vector is straightforward and accessible, requiring only basic knowledge of SQL injection techniques and the ability to manipulate HTTP request parameters.
The operational impact of this vulnerability extends beyond simple data compromise to encompass complete system integrity breaches and potential service disruption. Remote attackers can leverage this vulnerability to extract confidential information from the database, modify or delete critical records, and potentially gain elevated privileges within the database environment. The consequences include unauthorized data access, data corruption, and the potential for cascading security failures that could affect other interconnected systems. Organizations running VSNS Lemon 3.2.0 without proper input validation measures face significant risk of data breaches and regulatory compliance violations, particularly if the affected database contains sensitive personal or financial information. The vulnerability also creates opportunities for attackers to establish persistent access points within the network infrastructure, as database compromise often provides a valuable foothold for further lateral movement and reconnaissance activities.
Mitigation strategies for CVE-2006-1553 must address both immediate remediation and long-term architectural improvements to prevent similar vulnerabilities. The most effective immediate solution involves implementing proper input validation and parameterized queries throughout the application codebase, specifically targeting the functions/final_functions.php file and all other database interaction points. Organizations should ensure that magic_quotes_gpc is either enabled or that equivalent input sanitization mechanisms are implemented as a defensive measure. The implementation of prepared statements and parameterized queries aligns with best practices recommended by the OWASP Top Ten and follows the ATT&CK framework's mitigation strategies for command injection vulnerabilities. Additionally, regular security code reviews and penetration testing should be conducted to identify and remediate similar input validation flaws. Database access controls should be implemented to limit the privileges of database accounts used by the web application, ensuring that even if an attacker successfully exploits the vulnerability, their access remains restricted to minimize potential damage. Network segmentation and intrusion detection systems should also be deployed to monitor for suspicious database activity that might indicate exploitation attempts.