SQL Injection in Internship Management System

Executive Summary

This is a time-based blind SQL injection vulnerability in the Internship Management System 1.0. The flaw exists in the admin/login.php file where the Password parameter is directly used in an SQL query without proper sanitization. An attacker can inject malicious SQL code, such as using the sleep() function to cause database delays, and extract data character by character from the users table. The vulnerability allows unauthenticated remote attacks.

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Detection Guidance

To detect this SQL injection vulnerability, you can test the admin/login.php endpoint for time-based blind SQLi. Use tools like SQLmap with: sqlmap -u "http://target/admin/login.php" --data="Password=test" --time-sec=2 --dbms=mysql --risk=3 --level=5. Alternatively, manually test with curl: curl -X POST -d "Password=sleep(5)" http://target/admin/login.php and measure response delays.

Check for unusual database delays or errors in server logs when submitting inputs to the Password field. Monitor for repeated failed login attempts or unexpected payloads in HTTP requests.

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Impact Analysis

An attacker could exploit this to gain unauthorized access to sensitive data, such as user credentials stored in plaintext. This could lead to full administrative account takeover, data breaches, or further compromise of the system. The public availability of exploit code increases the risk of real-world attacks.

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Compliance Impact

This vulnerability could lead to non-compliance with GDPR and HIPAA due to unauthorized data access or exposure. GDPR requires protection of personal data, while HIPAA mandates safeguards for sensitive health information. A breach could result in legal penalties, fines, or reputational damage.

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Mitigation Strategies

Immediately patch the application by updating to a fixed version or applying input validation. Sanitize the Password parameter using prepared statements with parameterized queries. Example in PHP: use PDO with prepared statements like $stmt = $pdo->prepare("SELECT * FROM admin WHERE username = ? AND password = ?");

Disable public access to admin/login.php if possible. Encrypt stored passwords using strong hashing (e.g., bcrypt). Monitor network traffic for SQL injection attempts and block malicious IPs.

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