PHPGurukul Bank Locker Management System SQL Injection Vulnerability in Add-Subadmin File

A critical SQL injection vulnerability has been identified in PHPGurukul Bank Locker Management System version 1.0. The issue resides in the '/banker/add-subadmin.php' file, where the 'sadminusername' 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 leakage, data modification or deletion, and in some cases, executing administrative operations on the database.

Reproduction

To reproduce this vulnerability, send a POST request to '/banker/add-subadmin.php' with the 'sadminusername' parameter. Inject a payload that exploits time-based blind SQL injection, such as one that uses the MySQL 'SLEEP' function to demonstrate the injection. The request can be made using a tool like 'sqlmap' or manually through a web application testing tool.

Remediation

It is recommended to use prepared statements and parameter binding to prevent SQL injection. Additionally, implement input validation and filtering to ensure user input conforms to expected formats. Minimize database user permissions and conduct regular security audits.