Code-Projects Simple Pizza Ordering System SQL Injection Vulnerability in addmem.php

A critical SQL injection vulnerability has been identified in version 1.0 of the Code-Projects Simple Pizza Ordering System. The issue arises in the addmem.php file, where insufficient validation of the 'firstname' parameter allows attackers to inject malicious SQL queries. This vulnerability can be exploited remotely, without any authentication, potentially leading to unauthorized database access, data manipulation, and exposure of sensitive information.

Impact

Exploitation of this vulnerability allows for SQL injection, enabling attackers to interfere with the application's database queries. This could result in unauthorized data access, data modification or deletion, and in some cases, executing administrative operations on the database.

Reproduction

The vulnerability can be reproduced by sending a POST request to the addmem.php file with a crafted 'firstname' parameter that includes malicious SQL code. This payload can be designed to exploit time-based blind SQL injection techniques, such as using the SQL SLEEP function to demonstrate the injection's effectiveness.

Remediation

To address this vulnerability, it is recommended to implement prepared statements and parameter binding to separate SQL code from user input, ensuring that injected data is not executed as part of the SQL command. Additionally, input validation and filtering should be applied to confirm that user data meets expected formats before processing.