SourceCodester Class and Exam Timetabling System SQL Injection Vulnerability

A SQL injection vulnerability has been identified in SourceCodester Class and Exam Timetabling System version 1.0. The issue arises in the '/edit_schoolyr.php' file, where insufficient input validation of the 'id' parameter allows attackers to inject malicious SQL queries. This vulnerability can be exploited remotely, leading to unauthorized database access, data manipulation, and potential leakage of sensitive information.

Impact

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

Reproduction

The vulnerability can be reproduced by sending a crafted request to the '/edit_schoolyr.php' file with a manipulated 'id' parameter. This can be done using a tool like sqlmap, which can automate the exploitation of SQL injection vulnerabilities. Sqlmap can be used to extract database information, such as database names, using the '--dbs' option.

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 security.