Intro Linux File Permissions/Privileges + Demo: Privilege Escalation (root)

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I'm always interested in covering topics to help those new to Linux. Today is one of those days. Please feel welcome to leave any questions in the comments (your question could help others!)

We are covering file permissions, user/process privileges: An Introduction

(using real News and exploit as teaching tool)

In the video we use a real active local exploit to demonstrate the importance of understanding permissions and process/user privileges. Going from standard user to root shell in less than a second.

Watch Embedded:

https://youtu.be/QW-HjYqXmeQ

SCREENSHOT OF ROOT SHELL (ON MY OWN SYSTEM)

TRY THE CODE [FROM VIDEO DEMO] ON YOUR SYSTEM

It goes without saying: Only try on your own system. This moment was used as a teaching tool. Never run files on any system where you do not have explicit permission.

Code Used In Video

TEMP VULNERABILITY FIX

As shown on video, run the following to restrict the pkexec privileges to better secure your system until a patch arrives:

sudo chmod 0755 /usr/bin/pkexec

That's it for now.

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