CVE-2006-3963 in Banex
Summary
by MITRE
Multiple SQL injection vulnerabilities in Banex PHP MySQL Banner Exchange 2.21 allow remote attackers to execute arbitrary SQL commands via the (1) site_name parameter to (a) signup.php, and the (2) id, (3) deleteuserbanner, (4) viewmem, (5) viewmemunb, (6) viewunmem,or (7) deleteuser parameters to (b) admin.php.
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Analysis
by VulDB Data Team • 07/28/2025
The CVE-2006-3963 vulnerability represents a critical SQL injection flaw in the Banex PHP MySQL Banner Exchange version 2.21, a web-based advertising platform that facilitates banner exchange operations. This vulnerability affects the core database interaction mechanisms of the application, creating a pathway for remote attackers to manipulate the underlying MySQL database through specially crafted input parameters. The flaw exists within the application's input validation and query construction processes, where user-supplied data is directly incorporated into SQL statements without proper sanitization or parameterization.
The technical exploitation occurs through multiple entry points within the application's administrative interface and user registration functionality. Attackers can manipulate the site_name parameter in the signup.php file to inject malicious SQL code, while simultaneously targeting several parameters in the admin.php file including id, deleteuserbanner, viewmem, viewmemunb, viewunmem, and deleteuser. These parameters are processed without adequate input filtering, allowing attackers to construct malicious SQL payloads that bypass authentication mechanisms and gain unauthorized access to database operations. The vulnerability stems from the application's failure to properly escape or parameterize user input before executing database queries, creating a classic SQL injection vector that aligns with CWE-89, which specifically addresses improper neutralization of special elements used in SQL commands.
The operational impact of this vulnerability extends beyond simple data theft, as it enables attackers to execute arbitrary SQL commands on the database server hosting the banner exchange platform. This capability allows for complete database compromise, including data extraction, modification, or deletion of banner advertisements, user accounts, and potentially sensitive business information. The remote nature of the attack means that threat actors can exploit this vulnerability from anywhere on the internet without requiring physical access to the system or prior authentication. The vulnerability also provides attackers with potential persistence mechanisms through database modifications that could maintain access even after system patches are applied, making it particularly dangerous for web applications that handle user-generated content and advertising data.
Organizations affected by this vulnerability should implement immediate mitigations including input validation and parameterized queries to prevent SQL injection attacks. The recommended approach involves implementing proper input sanitization techniques and utilizing prepared statements with parameterized queries to separate SQL code from user data. Security measures should also include restricting database user privileges to the minimum required for application functionality, implementing web application firewalls to detect and block malicious SQL patterns, and conducting comprehensive code reviews to identify similar vulnerabilities in other application components. This vulnerability demonstrates the importance of following secure coding practices and adheres to ATT&CK technique T1071.004 for application layer protocol manipulation, where adversaries exploit application vulnerabilities to execute malicious commands through database interfaces. Organizations should also consider implementing database activity monitoring and regular vulnerability assessments to prevent similar issues in other legacy applications that may be running outdated software versions.