SourceCodester Online Class Record System SQL Injection Vulnerability

A SQL injection vulnerability has been identified in SourceCodester Online Class Record System version 1.0. The issue resides in the file '/admin/subject/controller.php', where insufficient validation of the 'id' parameter allows attackers to inject malicious SQL queries. This vulnerability can be exploited remotely, without any authentication, leading to unauthorized database access, data manipulation, and potential leakage of sensitive information.

Impact

Exploitation of this vulnerability allows for SQL injection, which could lead to unauthorized database access, data modification or deletion, access to sensitive information, and in some cases, full system control or service disruption.

Reproduction

The vulnerability can be reproduced by sending a request to the '/admin/subject/controller.php' file with a manipulated 'id' parameter. This can be done using a tool like sqlmap, which can automate the exploitation of SQL injection vulnerabilities. The injection can be performed using a time-based blind payload, which exploits the database's response time to confirm the injection's success.

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.