Book Image

Nmap: Network Exploration and Security Auditing Cookbook - Second Edition

By : Paulino Calderon
Book Image

Nmap: Network Exploration and Security Auditing Cookbook - Second Edition

By: Paulino Calderon

Overview of this book

This is the second edition of ‘Nmap 6: Network Exploration and Security Auditing Cookbook’. A book aimed for anyone who wants to master Nmap and its scripting engine through practical tasks for system administrators and penetration testers. Besides introducing the most powerful features of Nmap and related tools, common security auditing tasks for local and remote networks, web applications, databases, mail servers, Microsoft Windows machines and even ICS SCADA systems are explained step by step with exact commands and argument explanations. The book starts with the basic usage of Nmap and related tools like Ncat, Ncrack, Ndiff and Zenmap. The Nmap Scripting Engine is thoroughly covered through security checks used commonly in real-life scenarios applied for different types of systems. New chapters for Microsoft Windows and ICS SCADA systems were added and every recipe was revised. This edition reflects the latest updates and hottest additions to the Nmap project to date. The book will also introduce you to Lua programming and NSE script development allowing you to extend further the power of Nmap.
Table of Contents (25 chapters)
Title Page
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
13
Brute Force Password Auditing Options
17
References and Additional Reading

Detecting insecure cross-domain policies


Cross-domain and client access policies need to be check for overly permissive permissions. Insecure configurations allow cross-site request forgery attacks and could be abused to obtain sensitive data from web servers. The script http-cross-domain-policy will help us detect these insecure configurations and check automatically whether there are any domain names available for purchase to abuse the configuration.

This recipe shows how to detect insecure cross-domain policies in web servers with Nmap.

How to do it...

Use the following Nmap command to check the cross-domain policies of a web server:

$ nmap --script http-cross-domain-policy <target>

A vulnerability report will show up if the client access or cross-domain policy files are found. Additional information will be included to manually analyze the issue:

   PORT   STATE SERVICE   REASON 
   8080/tcp open  http-proxy syn-ack 
   | http-cross-domain-policy: 
   |   VULNERABLE: 
   |   Cross-domain...