SQL Injection Attack Types and Prevention Quiz

Which SQL injection technique uses the UNION operator to combine results from the original query with results from an injected query?

• Union-Based SQL Injection

• Time-Based Blind SQL Injection

• Error-Based SQL Injection

• Boolean-Based (Blind) SQL Injection

Answer explanation

Union-Based SQL Injection uses the UNION operator to merge the results of the original query with those from an injected query, allowing attackers to retrieve additional data from the database.

What is the primary purpose of error-based SQL injection?

• To use time delays to extract information

• To infer data by observing application behavior

• To extract data by forcing the database to generate error messages

• To combine results from multiple queries

Answer explanation

The primary purpose of error-based SQL injection is to extract data by forcing the database to generate error messages. These messages can reveal information about the database structure and contents, aiding the attacker.

Which SQL injection type infers data by observing differences in application behavior based on TRUE/FALSE questions?

• Union-Based SQL Injection

• Error-Based SQL Injection

• Boolean-Based (Blind) SQL Injection

• Out-of-Band SQL Injection

Answer explanation

Boolean-Based (Blind) SQL Injection infers data by asking TRUE/FALSE questions and observing the application's response. This method relies on the behavior of the application to extract information without directly seeing the data.

What is the main characteristic of time-based blind SQL injection?

• It uses time delays to extract information

• It extracts data through error messages

• It uses alternative channels like DNS or HTTP requests

• It combines results from multiple queries

Answer explanation

Time-based blind SQL injection relies on introducing time delays in the database response to infer information. By measuring the response time, attackers can extract data without visible output, making it a stealthy method.

Which SQL injection technique extracts data through alternative channels such as DNS or HTTP requests?

• Time-Based Blind SQL Injection

• Out-of-Band SQL Injection

• Error-Based SQL Injection

• Union-Based SQL Injection

Answer explanation

Out-of-Band SQL Injection extracts data through alternative channels like DNS or HTTP requests, making it effective when other methods fail. This technique allows attackers to retrieve data without directly interacting with the database.

What is the purpose of using parameterized queries in SQL?

• To separate SQL code from data

• To combine results from multiple queries

• To use time delays to extract information

• To extract data through error messages

Answer explanation

Parameterized queries separate SQL code from data, enhancing security by preventing SQL injection attacks and improving code readability and maintainability.

Which of the following is a method to prevent SQL injection by validating user inputs?

• Using parameterized queries

• Using time delays

• Input Validation

• Using UNION operator

Answer explanation

Input validation is crucial for preventing SQL injection as it ensures that user inputs conform to expected formats, thus blocking malicious data. While parameterized queries also help, the question specifically asks for a validation method.

What is the role of ORM frameworks in preventing SQL injection?

• To execute commands on the operating system

• To handle SQL securely

• To extract data through error messages

• To use alternative channels for data extraction

Answer explanation

ORM frameworks handle SQL securely by using parameterized queries and abstraction, which helps prevent SQL injection attacks by ensuring that user input is treated as data, not executable code.

Which SQL injection type involves stored procedures that handle user input unsafely?

• Union-Based SQL Injection

• Stored Procedure Injection

• Boolean-Based (Blind) SQL Injection

• Out-of-Band SQL Injection

Answer explanation

Stored Procedure Injection occurs when user input is improperly handled within stored procedures, allowing attackers to manipulate the execution of SQL commands. This makes it the correct choice for the given question.

What is the main advantage of using stored procedures to prevent SQL injection?

• They allow combining results from multiple queries

• They encapsulate SQL in a safe manner

• They extract data through error messages

• They use time delays to extract information

Answer explanation

Stored procedures encapsulate SQL code, allowing for safer execution of queries. This prevents SQL injection by separating user input from the SQL logic, making it harder for attackers to manipulate the query.