Book Image

SQL Injection Strategies

By : Ettore Galluccio, Edoardo Caselli, Gabriele Lombari
Book Image

SQL Injection Strategies

By: Ettore Galluccio, Edoardo Caselli, Gabriele Lombari

Overview of this book

SQL injection (SQLi) is probably the most infamous attack that can be unleashed against applications on the internet. SQL Injection Strategies is an end-to-end guide for beginners looking to learn how to perform SQL injection and test the security of web applications, websites, or databases, using both manual and automated techniques. The book serves as both a theoretical and practical guide to take you through the important aspects of SQL injection, both from an attack and a defense perspective. You’ll start with a thorough introduction to SQL injection and its impact on websites and systems. Later, the book features steps to configure a virtual environment, so you can try SQL injection techniques safely on your own computer. These tests can be performed not only on web applications but also on web services and mobile applications that can be used for managing IoT environments. Tools such as sqlmap and others are then covered, helping you understand how to use them effectively to perform SQL injection attacks. By the end of this book, you will be well-versed with SQL injection, from both the attack and defense perspective.
Table of Contents (11 chapters)
1
Section 1: (No)SQL Injection in Theory
4
Section 2: SQL Injection in Practice

SQL injection – theory in perspective

Summarizing all the theory aspects we examined in the first part of this book may seem quite difficult. Here, we will provide an overview of what we have covered in the same order in which we encountered them.

SQL injection in general

Let's first recap what SQL injection is and why it exists. SQL injection is caused inherently by SQL, which is a language responsible for interacting with relational database models. SQL is a very powerful language that's capable of performing a wide array of actions, including creating (CREATE) and inserting (INSERT) information within a database, deleting (DROP for tables and databases, DELETE for single entries), modifying (ALTER) or, much more commonly in an application setting, just selecting and querying (SELECT) its content with many different options. SQL injection allows malicious users to inject, within an existing operation, operations into the database that were not originally envisioned...