SourceCodester Student Grading System SQL Injection Vulnerability

A SQL injection vulnerability has been identified in SourceCodester Student Grading System version 1.0. The issue resides in the '/rms.php?page=users' file, where the 'fname' parameter is not properly validated, allowing attackers to inject malicious SQL queries. This vulnerability can be exploited remotely, leading to unauthorized database access, data manipulation, and potential leakage of sensitive information.

Impact

Exploitation of this vulnerability allows for SQL injection, which could be used to access, modify, or delete database information. Additionally, it could lead to unauthorized access to sensitive data or disruption of service.

Reproduction

The vulnerability can be reproduced by sending a POST request to '/grading/rms.php?page=users' with an injected payload in the 'fname' parameter. 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 can also help enhance overall security.