Campcodes Payroll Management System SQL Injection Vulnerability

A critical SQL injection vulnerability has been identified in Campcodes Payroll Management System version 1.0. The issue arises in the file '/Payroll_Management_System/ajax.php?action=save_employee_attendance', where the 'employee_id[]' parameter is manipulated, allowing attackers to inject malicious SQL queries. This vulnerability can be exploited remotely, without any 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 data access, data modification or deletion, and in some cases, executing administrative operations on the database.

Reproduction

To reproduce this vulnerability, send a POST request to '/Payroll_Management_System/ajax.php?action=save_employee_attendance' with the 'employee_id[]' parameter. Inject a payload that exploits the SQL injection vulnerability, such as a time-based blind SQL injection payload that uses a SQL injection technique to delay the response and indicate successful exploitation.

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.