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Practical Linux Security Cookbook

You're reading from   Practical Linux Security Cookbook Secure your Linux environment from modern-day attacks with practical recipes

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Product type Paperback
Published in Aug 2018
Publisher Packt
ISBN-13 9781789138399
Length 482 pages
Edition 2nd Edition
Tools
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Author (1):
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Tajinder Kalsi Tajinder Kalsi
Author Profile Icon Tajinder Kalsi
Tajinder Kalsi
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Toc

Table of Contents (15) Chapters Close

Preface 1. Linux Security Problem 2. Configuring a Secure and Optimized Kernel FREE CHAPTER 3. Local Filesystem Security 4. Local Authentication in Linux 5. Remote Authentication 6. Network Security 7. Security Tools 8. Linux Security Distros 9. Bash Vulnerability Patching 10. Security Monitoring and Logging 11. Understanding Linux Service Security 12. Scanning and Auditing Linux 13. Vulnerability Scanning and Intrusion Detection 14. Other Books You May Enjoy

Understanding the Bash vulnerability – Shellshock

Shellshock or Bashdoor is a vulnerability that occurs in most versions of Linux and Unix operating systems. It was discovered on September 12, 2014, and affects all distributions of Linux using Bash shell. Shellshock vulnerability makes it possible to execute commands remotely using environment variables.

Getting ready

To understand Shellshock, we will need a Linux system using a version of Bash prior to 4.3, which is vulnerable to this bug.

How to do it...

In this section, we will see how to set up our system to...

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