Code-Projects Library System SQL Injection Vulnerability in Add-Teacher.php

A critical SQL injection vulnerability has been identified in Code-Projects Library System version 1.0. The issue resides in the '/add-teacher.php' file, where the 'username' parameter is manipulated, allowing attackers 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 the overall security of the system and the integrity of its data.

Reproduction

The vulnerability can be reproduced by sending a POST request to the '/add-teacher.php' file with a crafted 'username' parameter that includes malicious SQL code. This can be done using tools like sqlmap, which automates the process of finding and exploiting SQL injection vulnerabilities.

Remediation

To address this vulnerability, 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 are also advisable.