Book Image

CompTIA PenTest+ Study Guide

By : Mike Chapple, David Seidl
Book Image

CompTIA PenTest+ Study Guide

By: Mike Chapple, David Seidl

Overview of this book

The CompTIA PenTest+ Study Guide: Exam PT0-001 offers comprehensive preparation for the newest intermediate cybersecurity certification exam. With expert coverage of Exam PT0-001 objectives, this book is your ideal companion throughout all stages of study; whether you’re just embarking on your certification journey or finalizing preparations for the big day, this invaluable resource helps you solidify your understanding of essential skills and concepts. The book shows how to perform security assessments on desktops, mobile devices, cloud, IoT, as well as industrial and embedded systems. You'll learn how to identify security weaknesses and manage system vulnerabilities. As you progress, you'll learn methods to ensure that existing cybersecurity practices, configurations, and policies conform with current best practices. You'll assess your knowledge by simulating cyber attacks to pinpoint security weaknesses in operating systems, networks, and applications. By the end of the book, you'll have all the resources you need to prepare for the exam - identify what you already know, learn what you don’t know, and face the exam with full confidence.
Table of Contents (21 chapters)
Free Chapter
1
Acknowledgments
2
About the Authors
3
Introduction
4
Assessment Test
5
Answers to Assessment Test
18
Index
19
Advert
20
End User License Agreement

Exploiting Injection Vulnerabilities

Injection vulnerabilities are among the primary mechanisms that penetration testers use to break through a web application and gain access to the systems supporting that application. These vulnerabilities allow an attacker to supply some type of code to the web application as input and trick the web server into either executing that code or supplying it to another server to execute.

Input Validation

Cybersecurity professionals and application developers have several tools at their disposal to help protect against injection vulnerabilities. The most important of these is input validation. Applications that allow user input should perform validation of that input to reduce the likelihood that it contains an attack.

The most effective form of input validation uses input whitelisting, in which the developer describes the exact type of input that is expected from the user and then verifies that the input matches that specification before passing the input...