Dafydd Stuttard, Marcus Pinto's The Web Application Hacker's Handbook: Finding and PDF

By Dafydd Stuttard, Marcus Pinto

ISBN-10: 1118026470

ISBN-13: 9781118026472

The hugely profitable protection booklet returns with a brand new version, thoroughly updated
Web functions are front door to so much organisations, exposing them to assaults that could expose own details, execute fraudulent transactions, or compromise usual clients. This useful publication has been thoroughly up to date and revised to debate the most recent step by step concepts for attacking and protecting the variety of ever-evolving net functions. You'll discover a number of the new applied sciences hired in net purposes that experience seemed because the first version and evaluation the hot assault suggestions which have been built, quite when it comes to the customer side.* unearths the right way to triumph over the hot applied sciences and methods aimed toward protecting internet purposes opposed to assaults that experience seemed because the prior variation* Discusses new remoting frameworks, HTML5, cross-domain integration ideas, UI redress, framebusting, HTTP parameter toxins, hybrid dossier assaults, and extra* contains a spouse website hosted by way of the authors that permits readers to attempt out the assaults defined, provides solutions to the questions which are posed on the finish of every bankruptcy, and gives a summarized technique and record of tasks
Focusing at the components of net program defense the place issues have replaced lately, this publication is the most up-tp-date source at the serious subject of learning, exploiting, and fighting internet program safeguard flaws.

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Extra resources for The Web Application Hacker's Handbook: Finding and Exploiting Security Flaws

Example text

For example, a user of a blogging application may create a blog whose subject is web application hacking. Posts and comments made to the blog may quite legitimately contain explicit attack strings that are being discussed. The application may need to store this input in a database, write it to disk, and display it back to users in a safe way. It cannot simply reject the input just because it looks potentially malicious without substantially diminishing the application’s value to some of its user base.

Hence, it is not a trivial task to obtain reliable information about the state of web application security today. This chapter takes a brief look at how web applications have evolved and the many beneﬁts they provide. We present some metrics about vulnerabilities in current web applications, drawn from the authors’ direct experience, demonstrating that the majority of applications are far from secure. We describe the core security problem facing web applications — that users can supply arbitrary input — and the various factors that contribute to their weak security posture.

Indd V2 - 07/07/2011 Page 9 Chapter 1 n Web Application (In)security 9 The Core Security Problem: Users Can Submit Arbitrary Input As with most distributed applications, web applications face a fundamental problem they must address to be secure. Because the client is outside of the application’s control, users can submit arbitrary input to the server-side application. The application must assume that all input is potentially malicious. Therefore, it must take steps to ensure that attackers cannot use crafted input to compromise the application by interfering with its logic and behavior, thus gaining unauthorized access to its data and functionality.

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