Book Image

The Web Application Hacker's Handbook

By : Dafydd Stuttard, Marcus Pinto
Book Image

The Web Application Hacker's Handbook

By: Dafydd Stuttard, Marcus Pinto

Overview of this book

Web applications are the front door to most organizations, exposing them to attacks that may disclose personal information, execute fraudulent transactions, or compromise ordinary users. This practical book has been completely updated and revised to discuss the latest step-by-step techniques for attacking and defending the range of ever-evolving web applications. Youíll explore the various new technologies employed in web applications that have appeared since the first edition and review the new attack techniques that have been developed, particularly in relation to the client side. The book starts with the current state of web application security and the trends that indicate how it is likely to evolve soon. Youíll examine the core security problem affecting web applications and the defence mechanisms that applications implement to address this problem, and youíll also explore the key technologies used in todayís web application. Next, youíll carry out tasks for breaking into web applications and for executing a comprehensive attack. As you progress, youíll learn to find vulnerabilities in an application's source code and review the tools that can help when you hack web applications. Youíll also study a detailed methodology for performing a comprehensive and deep attack against a specific target. By the end of this book, youíll be able to discover security flaws in web applications and how to deal with them.
Table of Contents (32 chapters)
Free Chapter
About the Authors
About the Technical Editor
MDSec: The Authors’ Company
End User License Agreement

Chapter 15
Exploiting Information Disclosure

Chapter 4 described various techniques you can use to map a target application and gain an initial understanding of how it works. That methodology involved interacting with the application in largely benign ways to catalog its content and functionality, determine the technologies in use, and identify the key attack surface.

This chapter describes ways in which you can extract further information from an application during an actual attack. This mainly involves interacting with the application in unexpected and malicious ways and exploiting anomalies in the application's behavior to extract information that is of value to you. If successful, such an attack may enable you to retrieve sensitive data such as user credentials, gain a deeper understanding of an error condition to fine-tune your attack, discover more details about the technologies in use, and map the application's internal structure and functionality.