SourceCodester Student Grading System SQL Injection Vulnerability in form137.php

A SQL injection vulnerability has been identified in SourceCodester Student Grading System version 1.0. The issue resides in the file form137.php, where insufficient input validation of the 'id' parameter allows 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. Such actions could disrupt service and compromise data integrity.

Reproduction

The vulnerability can be reproduced by sending a crafted HTTP request to form137.php with an manipulated 'id' parameter. 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.