SourceCodester Stock Management System SQL Injection Vulnerability in Password Change Functionality

A critical SQL injection vulnerability has been identified in SourceCodester Stock Management System version 1.0. The issue arises in the file '/php_action/changePassword.php', where the 'user_id' parameter is processed without proper validation, allowing attackers to inject malicious SQL queries. This vulnerability can be exploited remotely, potentially leading to unauthorized database access, data manipulation, and leakage of sensitive information.

Impact

Exploitation of this vulnerability allows for SQL injection, enabling attackers to interfere with the application's database queries. This could result in unauthorized data access, data modification or deletion, and in some cases, executing administrative operations on the database.

Reproduction

The vulnerability can be reproduced by sending a POST request to '/php_action/changePassword.php' with the 'user_id' parameter. The request can include a payload that exploits the SQL injection, such as a SQL query that, when executed, could extract database information or manipulate database records. This can be done using tools like sqlmap, which automates the process of finding and exploiting SQL injection vulnerabilities.

Remediation

To address this vulnerability, it is recommended to implement prepared statements and parameter binding to prevent SQL injection. Additionally, user input should be validated and filtered to ensure it meets expected formats. Minimizing database user permissions and conducting regular security audits can also help enhance the application's security.