SourceCodester Open Source Clinic Management System SQL Injection Vulnerability

A critical SQL injection vulnerability has been identified in SourceCodester Open Source Clinic Management System version 1.0. The issue resides in the '/email_config.php' file, where the 'mail_port' parameter is manipulated to inject malicious SQL queries. This vulnerability can be exploited remotely, without any authentication, leading to unauthorized database access, data modification or deletion, and exposure of sensitive information.

Impact

Exploitation of this vulnerability allows for unauthorized access to the database, manipulation or deletion of data, and access to sensitive information. Such actions pose a significant threat to system security and data integrity.

Reproduction

The vulnerability can be reproduced by sending a POST request to 'email_config.php' with the 'mail_port' parameter. The request should include a payload that exploits the SQL injection vulnerability, such as one that uses a time-based blind SQL injection technique, causing the database to pause execution for a specified duration. This indicates that the injection was successful and allows for further exploitation, such as extracting database information.

Remediation

It is recommended to use prepared statements and parameter binding to prevent SQL injection, validate and filter user input, minimize database user permissions, and conduct regular security audits.