Code-Projects Student File Management System SQL Injection Vulnerability in save_user.php

A SQL injection vulnerability exists in Code-Projects Student File Management System version 1.0, specifically within the admin/save_user.php file. The vulnerability arises because user-supplied input, particularly the firstname parameter, is directly incorporated into SQL queries without adequate validation or sanitization. This flaw allows remote attackers to inject malicious SQL code, potentially leading to unauthorized database access, data manipulation, and exploitation of the user management system.

Impact

Exploitation of this vulnerability allows for SQL injection, where attackers can manipulate database queries to their advantage. 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 the admin/save_user.php file with crafted SQL injection payloads in the firstname parameter. The absence of input validation or parameterization in the SQL query handling allows these payloads to be executed, demonstrating the SQL injection flaw.

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 that user input meets expected formats, blocking malicious data. Finally, database user permissions should be minimized, granting only the necessary privileges for operations.