Install and run kube-bench on Ubuntu

Go to kube-bench releases page.
Select the deb package of latest release and download it with wget (the below example is for current latest release v0.6.12):

wget https://github.com/aquasecurity/kube-bench/releases/download/v0.6.12/kube-bench_0.6.12_linux_amd64.deb

Install the deb package with apt:

sudo apt install ./kube-bench_0.6.12_linux_amd64.deb

Run kube-bench binary by issuing:

kube-bench

The above should be done for all master and worker nodes