School Management System SQL Injection Vulnerability

A SQL injection vulnerability has been identified in School Management System version 1.0, developed by manikandan580. This vulnerability allows both authenticated and unauthenticated remote attackers to send crafted HTTP requests to manipulate SQL query logic, potentially leading to the extraction of sensitive database information. The vulnerability arises from user input being directly incorporated into SQL queries without proper sanitization or the use of parameterized statements, enabling attackers to inject arbitrary SQL logic. This issue is indicative of a broader lack of input validation across the application, as similar vulnerabilities have been confirmed in other endpoints of the same codebase.

Impact

Exploitation of this vulnerability allows for unauthorized access to database contents, including student records and admin credentials. Additionally, the injected SQL could be used to alter or delete database records. Depending on the attacker's intent and database privileges, this vulnerability could also disrupt the application's availability.

Reproduction

To reproduce this vulnerability, send a crafted HTTP request to an endpoint of the School Management System version 1.0. The request should include SQL injection payloads that exploit the application's lack of input sanitization. Monitor the response for indications that database information has been leaked, such as student records or admin credentials.

Remediation

To address this vulnerability, developers should replace all raw SQL string concatenation with parameterized queries using PDO or MySQLi prepared statements. Additionally, implement strict server-side validation of all user-supplied input, ensure that the web application's database user has only the necessary privileges, disable SQL error display in production environments while logging errors server-side, and consider deploying a Web Application Firewall as a temporary measure.