Projectworlds Online Examination System SQL Injection Vulnerability

A critical SQL injection vulnerability has been identified in version 1.0 of the Projectworlds Online Examination System. The issue resides in the '/inser_doc_process.php' file, where the 'Doc_ID' parameter is manipulated to inject malicious SQL queries. This vulnerability can be exploited remotely, without any authentication, leading to unauthorized database access, data manipulation, and potential service disruption.

Impact

Exploitation of this vulnerability allows for unauthorized access to the database, manipulation or deletion of data, leakage of sensitive information, and disruption of services, posing a significant threat to system security and business operations.

Reproduction

The vulnerability can be reproduced by sending a POST request to 'inser_doc_process.php' with the 'Doc_ID' parameter. The request can include a crafted SQL payload that exploits the application's SQL query handling. 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 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 can also help enhance overall system security.