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

Avoiding Logic Flaws

Just as there is no unique signature by which logic flaws in web applications can be identified, there is also no silver bullet that will protect you. For example, there is no equivalent to the straightforward advice of using a safe alternative to a dangerous API. Nevertheless, a range of good practices can be applied to significantly reduce the risk of logical flaws appearing within your applications:

  • Ensure that every aspect of the application's design is clearly documented in sufficient detail for an outsider to understand every assumption the designer made. All such assumptions should be explicitly recorded within the design documentation.
  • Mandate that all source code is clearly commented to include the following information throughout:
    • The purpose and intended uses of each code component.
    • The assumptions made by each component about anything that is outside of its direct control.
    • References to all client code that uses the component. Clear documentation...