Lab
A Cloud Guru

Verify Kubernetes Binaries

Compromised Kubernetes binaries could be used to gain access to your systems. In this lab, you will mitigate this threat by verifying these binaries before they are executed.

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Path Info

Level

Advanced

Duration

30m

Published

May 19, 2021

Challenge

Locate and Download the Checksums for the Binary Files

The binary files are located in /home/cloud_user/k8s-binaries/.

Your coworker has left the version number they used in a file called version.txt. Check this file for the version number. Don't try to check the version by running any of the binaries before you have verified them (e.g., with a command like kubectl version)! All of the binaries are the same version.

Use the version number to download the correct checksum file for each of the binary files. Download the checksums to the same directory the binaries are located in (/home/cloud_user/k8s-binaries/).
Challenge

Verify the Binaries and Delete Any That May Contain Malicious Code

Use the checksums to verify all of the binaries contained in /home/cloud_user/k8s-binaries/.

Delete any binary files that fail checksum verification, as they could contain malicious code.

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.