Sql Injection Challenge 5 Security Shepherd [updated]

After successfully completing the first few challenges, you'll be presented with something that looks like a typical, albeit vulnerable, login form. The goal is clear and singular: The key (or flag) for the challenge is almost always granted upon successful login.

The resulting string processed by the database engine becomes \\' .

Bypass this escaping mechanism to perform a blind or error-based SQL injection, ultimately allowing you to extract data or bypass a login.

We construct the final payload to extract the password. Sql Injection Challenge 5 Security Shepherd

Use ORDER BY to find the number of columns. 1' ORDER BY 1-- (Works) 1' ORDER BY 2-- (Works) 1' ORDER BY 3-- (Breaks? Then there are 2 columns) Identify Data Types: Test which columns display text. Extract Data: Use UNION to select database information:

String query = "SELECT * FROM users WHERE username = ? AND password = ?"; PreparedStatement pstmt = connection.prepareStatement(query); pstmt.setString(1, username); pstmt.setString(2, password); ResultSet rs = pstmt.executeQuery();

1 AND 1=1

If the application returns "Your account name is test", you have confirmed the application is reflecting input back to you. This is crucial for a UNION-based injection.

: The application likely uses a query similar to: SELECT * FROM coupons WHERE couponCode = "[YOUR_INPUT]" AND status = 'active'

: Comments out the rest of the original query, removing the closing quote intended by the developer. 4. Submitting the Solution Enter \' OR 1=1; -- into the vulnerable field. Submit the form. Bypass this escaping mechanism to perform a blind

: The application likely uses a basic SQL query to verify coupons, such as: SELECT coupon_code FROM coupons WHERE coupon_code = 'User_Input';

WAFs, like AWS WAF, can monitor and block suspicious SQL syntax in requests.

Complete protection against primary and secondary SQL injection variants. 🔒 Remediation: How to Fix the Code 1' ORDER BY 1-- (Works) 1' ORDER BY