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

Wrapping up – (No-)SQL injection in theory

OK; that was quite a lot of information. Let's have a recap of what we were dealing in this theoretical section so far.

SQL injection can be used by attackers in a variety of scenarios. In this chapter, we have seen examples regarding two common purposes, as follows:

  • Obtaining undisclosed information about the database or its content, through database exploration or inference techniques
  • Gaining privileged access to applications that use a shared database system

Limiting application functionality could also be possible using SQL statements such as DROP, or through modification of vital information in a database, such as login information.

In this chapter, we added another very important tool to be used within SQL statements, as follows:

  • UNION can be added to existing statements to return results pertaining to another query within the same result table. To function properly, it's necessary that...