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

Web Application Firewalls

Many applications are protected by an external component residing either on the same host as the application or on a network-based device. These can be categorized as performing either intrusion prevention (application firewalls) or detection (such as conventional intrusion detection systems). Due to similarities in how these devices identify attacks, we will treat them fairly interchangeably. Although many would argue that having these is better than nothing at all, in many cases they may create a false sense of security in the belief that an extra layer of defense implies an automatic improvement of the defensive posture. Such a system is unlikely to lower the security and may be able to stop a clearly defined attack such as an Internet worm, but in other cases it may not be improving security as much as is sometimes believed.

Immediately it can be noted that unless such defenses employ heavily customized rules, they do not protect against any of the vulnerabilities...