Code-Projects Simple Online Hotel Reservation System SQL Injection Vulnerability

A critical SQL injection vulnerability has been identified in version 1.0 of the Code-Projects Simple Online Hotel Reservation System. The issue resides in the file '/admin/checkout_query.php', where the 'transaction_id' parameter is manipulated, allowing attackers to inject malicious SQL queries. This vulnerability can be exploited remotely without authentication, potentially leading to unauthorized database access, data modification or deletion, and exposure of sensitive information.

Impact

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

Reproduction

The vulnerability can be reproduced by sending a request to the '/admin/checkout_query.php' file with a crafted 'transaction_id' parameter that includes malicious SQL code. This can be done using tools like sqlmap, which can automate the injection process and exploit the vulnerability.

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.