PHPGurukul Pre-School Enrollment System SQL Injection Vulnerability in Teacher Edit Function

A critical SQL injection vulnerability has been identified in the PHPGurukul Pre-School Enrollment System version 1.0. The issue resides in the file '/admin/edit-teacher.php', where the 'mobilenumber' parameter is manipulated, allowing attackers to inject malicious SQL queries. This vulnerability can be exploited remotely, potentially affecting other parameters as well.

Impact

Exploitation of this vulnerability allows unauthorized access to the database, manipulation of data, leakage of sensitive information, and could disrupt normal service operations.

Reproduction

The vulnerability can be reproduced by sending a POST request to '/admin/edit-teacher.php' with the 'mobilenumber' parameter crafted to include a SQL 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 implement prepared statements and parameter binding to prevent SQL injection. Additionally, input validation and filtering should be applied to ensure that user input meets expected formats, thereby blocking malicious data. Finally, database user permissions should be minimized, ensuring that the account used to connect to the database has only the necessary privileges.