PHPGurukul Bank Locker Management System SQL Injection Vulnerability

A critical SQL injection vulnerability has been identified in PHPGurukul Bank Locker Management System version 1.0. The issue arises in the file '/banker/edit-locker.php?ltid=6', where the 'lockersize' parameter is manipulated, leading to unauthorized database access. This vulnerability allows attackers to inject malicious SQL queries, potentially modifying or deleting data and accessing sensitive information. Notably, no authentication is required to exploit this vulnerability, and it can be executed remotely.

Impact

Exploitation of this vulnerability allows for SQL injection, where attackers can manipulate database queries. This could lead to 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 '/banker/edit-locker.php?ltid=6' with the 'lockersize' parameter. The payload should be crafted to exploit time-based blind SQL injection, using a MySQL-specific injection technique that leverages the 'SLEEP' function to create a delay, indicating successful exploitation.

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 are also advisable.