Sql: Injection Challenge 5 Security Shepherd 2021

The application's defense against SQL injection is a simple escaping function that replaces every single quote ( ' ) with a backslash single quote ( \' ). The problem is that it doesn't do the same for double quotes ( " ). This creates a classic injection vector:

To complete the module and retrieve the flag, use the following interactive steps via your testing browser or an interception tool like PortSwigger Burp Suite: Step 1: Detect the Injectable Parameter

If the application breaks or returns a generic database error, it confirms the input is handled unsafely. Sql Injection Challenge 5 Security Shepherd

After bypassing login, you are logged in as admin but see no flag. The flag is stored in another table (e.g., flags ). To retrieve it, you must inject a SELECT without using the word SELECT .

The resulting query has effectively bypassed the string context, and the OR 1=1 condition evaluates to true, returning all rows from the customers table. The double dash ( -- ) comments out the rest of the original query, including the closing quotation marks and any additional conditions. The application's defense against SQL injection is a

The attacker asks the database true/false questions. By observing changes in the application’s visible response (e.g., a "User Found" vs. "User Not Found" message), the attacker infers the data character by character.

Submit this code into the module submitter to confirm validation and earn your challenge score! 📊 Quick Comparison: Escaping vs. Parameterization Defense Vector Implementation Strategy Security Status Vulnerability Profile Replacing characters dynamically via regex patterns Highly Insecure After bypassing login, you are logged in as

The underlying web application constructs an insecure dynamic SQL statement. Instead of using Prepared Statements or Parameterized Queries , it concatenates user input directly into a string template:

' UNION SELECT 1, column_name, 3 FROM information_schema.columns WHERE table_name='users'--

The project is a gold standard for this transition. It is a deliberately vulnerable web application designed to teach security fundamentals through gamified challenges. Among its arsenal of lessons, Challenge 5 stands as a critical milestone. It is not a simple "bypass a login" task; it is a masterclass in data exfiltration via blind SQL injection .

The OWASP Security Shepherd is a deliberately vulnerable web application designed to teach application security. Its SQL Injection challenges progress from trivial to advanced. Challenge 5 is notable because it: