ubuntu - How to upgrade to VirtualBox Guest Additions on VM box?

Question

I've got the latest version of VirtualBox installed on my desktop (4.3.4).

I'm using Vagrant to run a VM based on the example 64-bit Ubuntu 12.04 LTS box at:

http://files.vagrantup.com/precise64.box

Everytime I run vagrant up, I get the following warning:

The guest additions on this VM do not match the installed version of
VirtualBox! In most cases this is fine, but in rare cases it can
cause things such as shared folders to not work properly. If you see
shared folder errors, please update the guest additions within the
virtual machine and reload your VM.

Guest Additions Version: 4.2.0
VirtualBox Version: 4.3

I've googled, but I can't find a way to upgrade to Guest Additions v4.3. The latest version in the Ubuntu repository for precise is 4.1, and there's no download link on the official VirtualBox download page.

Answer 1

You can check out the following plugin, it should suit your needs:

https://github.com/dotless-de/vagrant-vbguest

For Vagrant ≥ 1.1

vagrant plugin install vagrant-vbguest

Vagrant 1.0 and older

vagrant gem install vagrant-vbguest