Book Image

Nmap Network Exploration and Security Auditing Cookbook, Third Edition - Third Edition

By : Paulino Calderon
Book Image

Nmap Network Exploration and Security Auditing Cookbook, Third Edition - Third Edition

By: Paulino Calderon

Overview of this book

Nmap is one of the most powerful tools for network discovery and security auditing used by millions of IT professionals, from system administrators to cybersecurity specialists. This third edition of the Nmap: Network Exploration and Security Auditing Cookbook introduces Nmap and its family - Ncat, Ncrack, Ndiff, Zenmap, and the Nmap Scripting Engine (NSE) - and guides you through numerous tasks that are relevant to security engineers in today’s technology ecosystems. The book discusses some of the most common and useful tasks for scanning hosts, networks, applications, mainframes, Unix and Windows environments, and ICS/SCADA systems. Advanced Nmap users can benefit from this book by exploring the hidden functionalities within Nmap and its scripts as well as advanced workflows and configurations to fine-tune their scans. Seasoned users will find new applications and third-party tools that can help them manage scans and even start developing their own NSE scripts. Practical examples featured in a cookbook format make this book perfect for quickly remembering Nmap options, scripts and arguments, and more. By the end of this Nmap book, you will be able to successfully scan numerous hosts, exploit vulnerable areas, and gather valuable information.
Table of Contents (22 chapters)
Appendix A: HTTP, HTTP Pipelining, and Web Crawling Configuration Options
Appendix Β: Brute-Force Password Auditing Options
Appendix F: References and Additional Reading

Finding SQL injection vulnerabilities

SQL injection vulnerabilities are caused by the lack of sanitation of user input, and they allow attackers to execute Database Management System (DBMS) queries that could compromise the entire system. This type of web vulnerability is widespread, and because each script variable must be tested, checking for such vulnerabilities can be a very tedious task. Fortunately, we can use Nmap to scan a web server looking for SQL injection vulnerabilities quickly.

This recipe shows how to find SQL injection vulnerabilities in web applications with Nmap NSE.

How to do it...

To find SQL injection vulnerabilities in web servers with Nmap, use the following command:

$ nmap -sV --script http-sql-injection <target>

All vulnerable files will be shown with the payload used:

PORT STATE SERVICE
80/tcp open     http syn-ack
| http-sql-injection:
|    Possible sqli for queries:
|_   ...