PHPGurukul Medical Card Generation System SQL Injection Vulnerability

A critical SQL injection vulnerability has been identified in PHPGurukul Medical Card Generation System version 1.0. The issue resides in the '/download-medical-cards.php' file, where the 'searchdata' parameter is manipulated, leading to unauthorized database access. This vulnerability allows attackers to inject malicious SQL queries, bypassing input validation, and potentially accessing, modifying, or deleting sensitive data. The vulnerability can be exploited remotely without authentication.

Impact

Exploitation of this vulnerability allows for SQL injection, enabling attackers to manipulate database queries. This could lead to unauthorized data access, data modification or deletion, and in some cases, executing administrative operations on the database.

Reproduction

The vulnerability can be reproduced by sending a POST request to the '/download-medical-cards.php' file with the 'searchdata' parameter. The request can include a payload that exploits the SQL injection, such as a time-based blind injection payload or a UNION-based injection payload. This can be done using tools like sqlmap, which automates the process of finding and exploiting SQL injection vulnerabilities.

Remediation

It is recommended to use prepared statements and parameter binding to prevent SQL injection. Additionally, input validation and filtering should be implemented to ensure user input conforms to expected formats. Minimizing database user permissions and conducting regular security audits can also help mitigate such vulnerabilities.