SourceCodester Online Exam Form Submission SQL Injection Vulnerability

A SQL injection vulnerability has been identified in SourceCodester Online Exam Form Submission version 1.0. The issue resides in the '/index.php' file, where the 'usn' parameter is manipulated to inject malicious SQL queries. This vulnerability can be exploited remotely, allowing attackers to gain unauthorized access to the database, modify or delete data, and access sensitive information.

Impact

Exploitation of this vulnerability allows for unauthorized database access, manipulation of data, and potential disruption of services.

Reproduction

The vulnerability can be reproduced by sending a POST request to '/examformsubmission/index.php' with the 'usn' parameter. The injected SQL payload can be crafted to exploit the application's SQL query handling, taking advantage of the lack of input validation.

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.