Book Image

Kali Linux Web Penetration Testing Cookbook

By : Gilberto Najera-Gutierrez
Book Image

Kali Linux Web Penetration Testing Cookbook

By: Gilberto Najera-Gutierrez

Overview of this book

Web applications are a huge point of attack for malicious hackers and a critical area for security professionals and penetration testers to lock down and secure. Kali Linux is a Linux-based penetration testing platform and operating system that provides a huge array of testing tools, many of which can be used specifically to execute web penetration testing. This book will teach you, in the form step-by-step recipes, how to detect a wide array of vulnerabilities, exploit them to analyze their consequences, and ultimately buffer attackable surfaces so applications are more secure, for you and your users. Starting from the setup of a testing laboratory, this book will give you the skills you need to cover every stage of a penetration test: from gathering information about the system and the application to identifying vulnerabilities through manual testing and the use of vulnerability scanners to both basic and advanced exploitation techniques that may lead to a full system compromise. Finally, we will put this into the context of OWASP and the top 10 web application vulnerabilities you are most likely to encounter, equipping you with the ability to combat them effectively. By the end of the book, you will have the required skills to identify, exploit, and prevent web application vulnerabilities.
Table of Contents (17 chapters)
Kali Linux Web Penetration Testing Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

A10 – Redirect validation


Unvalidated redirects and forwards is the tenth most critical security issue for web applications according to OWASP; it happens when an application takes a URL or an internal page as a parameter to perform a redirect or forward operation. If the parameter is not correctly validated, an attacker could abuse it making it to redirect to a malicious Web site.

In this recipe we will see how to validate that the parameter we receive for redirection or forwarding is the one that we intend to have when we develop the application.

How to do it...

  1. Don't want to be vulnerable? Don't use it. Whenever it's possible, avoid the use of redirects and forwards.

  2. If it is necessary to make a redirection, try not to use user-provided parameters (request variables) to calculate the destination.

  3. If the use of parameters is required, implement a table that works as a catalog of redirections, using an ID instead of a URL as the parameter the user should provide.

  4. Always validate the inputs that...