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Web Penetration Testing with Kali Linux. - Third Edition

You're reading from  Web Penetration Testing with Kali Linux. - Third Edition

Product type Book
Published in Feb 2018
Publisher
ISBN-13 9781788623377
Pages 426 pages
Edition 3rd Edition
Languages
Authors (3):
Daniel W. Dieterle Daniel W. Dieterle
Profile icon Daniel W. Dieterle
Gilberto Najera-Gutierrez Gilberto Najera-Gutierrez
Profile icon Gilberto Najera-Gutierrez
Juned Ahmed Ansari Juned Ahmed Ansari
Profile icon Juned Ahmed Ansari
View More author details
Toc

Table of Contents (19) Chapters close

Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
1. Introduction to Penetration Testing and Web Applications 2. Setting Up Your Lab with Kali Linux 3. Reconnaissance and Profiling the Web Server 4. Authentication and Session Management Flaws 5. Detecting and Exploiting Injection-Based Flaws 6. Finding and Exploiting Cross-Site Scripting (XSS) Vulnerabilities 7. Cross-Site Request Forgery, Identification, and Exploitation 8. Attacking Flaws in Cryptographic Implementations 9. AJAX, HTML5, and Client-Side Attacks 10. Other Common Security Flaws in Web Applications 11. Using Automated Scanners on Web Applications 1. Other Books You May Enjoy Index

Mitigating AJAX, HTML5, and client-side vulnerabilities


The key to preventing client-side vulnerabilities, or at least to minimizing their impact, is never to trust external information, be it from a client application, web service, or the server inputs. These must always be validated before processing them, and all of the data being shown to users must be properly sanitized and formatted before displaying it in any format (such as HTML, CSV, JSON, and XML). It is a good practice to do a validation layer on the client-side, but that cannot be a replacement for server-side validation.

The same thing happens with authentication and authorization checks. Some effort can be made to reduce the number of invalid requests that reach the server, but the server-side code must verify that the requests that reach it are indeed valid and allowed to proceed to the user's session that is sending such requests.

For AJAX and HTML5, correctly configuring the server and parameters, such as cross origin, content...

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