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Nmap: Network Exploration and Security Auditing Cookbook

You're reading from   Nmap: Network Exploration and Security Auditing Cookbook Network discovery and security scanning at your fingertips

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Product type Paperback
Published in May 2017
Publisher
ISBN-13 9781786467454
Length 416 pages
Edition 2nd Edition
Languages
Tools
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Author (1):
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Paulino Calderon Paulino Calderon
Author Profile Icon Paulino Calderon
Paulino Calderon
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Table of Contents (18) Chapters Close

Preface 1. Nmap Fundamentals FREE CHAPTER 2. Network Exploration 3. Reconnaissance Tasks 4. Scanning Web Servers 5. Scanning Databases 6. Scanning Mail Servers 7. Scanning Windows Systems 8. Scanning ICS SCADA Systems 9. Optimizing Scans 10. Generating Scan Reports 11. Writing Your Own NSE Scripts 12. HTTP, HTTP Pipelining, and Web Crawling Configuration Options 13. Brute Force Password Auditing Options 14. NSE Debugging 15. Additional Output Options 16. Introduction to Lua 17. References and Additional Reading

Detecting web applications vulnerable to Shellshock


Shellshock is a vulnerability in the UNIX Bash shell that widely affects different products, including web applications that use Bash to process requests internally. It was assigned the vulnerability ID CVE-2014-6271, and until this day, we suspect there are many vulnerable products yet to be identifies.

The following recipe will show you how to detect web applications vulnerable to Shellshock with Nmap.

How to do it...

To identify all web applications vulnerable to Shellshock running on a web server, we can use the following command:

$ nmap -sV --script http-shellshock <target>

If a web application is vulnerable, we will see a report like this one:

   PORT   STATE SERVICE REASON 
   80/tcp  open  http  syn-ack 
   | http-shellshock: 
   |   VULNERABLE: 
   |   HTTP Shellshock vulnerability 
   |     State: VULNERABLE (Exploitable) 
   |     IDs:  CVE:CVE-2014-6271 
   |       This web application might be affected by the vulnerability...
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