vagrant up gives this:
==> default: Vagrant has detected a configuration issue which exposes a ==> default: vulnerability with the installed version of VirtualBox. The ==> default: current guest is configured to use an E1000 NIC type for a ==> default: network adapter which is vulnerable in this version of VirtualBox. ==> default: Ensure the guest is trusted to use this configuration or update ==> default: the NIC type using one of the methods below: ==> default: ==> default: https://www.vagrantup.com/docs/virtualbox/configuration.html#default-nic-type ==> default: https://www.vagrantup.com/docs/virtualbox/networking.html#virtualbox-nic-type
Works otherwise, but annoying.
The links recomment changing the default_nic_type property of the Vagrant provider, or the nic_type property of the network.
More information on the security issue: https://developers.slashdot.org/story/18/11/10/1739206/disgruntled-security-researcher-publishes-major-virtualbox-0-day-exploit