Introduction

The apache2 version that is installed on Ubuntu is a couple updates behind.  This unfortunately exposes your server to unpatched vulnerabilities. This can be fixed easily.  So lets get started.

A few quick steps

We will start things off by adding a third party repo.
> sudo add-apt-repository ppa:ondrej/apache2

Now bring everything up to date.
> sudo apt update
> sudo apt dist-upgrade

Conclusion

Not much to it. Enjoy.