diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee9fc108d..a28eebcdf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 ## 1.1.0 (unreleased)
 
+  - VirtualBox 4.2 support.
   - New plugin system which adds much more structure and stability to
     the overall API. The goal of this system is to make it easier to write
     powerful plugins for Vagrant while providing a backwards-compatible API
diff --git a/plugins/providers/virtualbox/driver/meta.rb b/plugins/providers/virtualbox/driver/meta.rb
index 1cf76436e..eb47c9666 100644
--- a/plugins/providers/virtualbox/driver/meta.rb
+++ b/plugins/providers/virtualbox/driver/meta.rb
@@ -42,7 +42,8 @@ module VagrantPlugins
           @logger.debug("Finding driver for VirtualBox version: #{@version}")
           driver_map   = {
             "4.0" => Version_4_0,
-            "4.1" => Version_4_1
+            "4.1" => Version_4_1,
+            "4.2" => Version_4_2
           }
 
           driver_klass = nil
diff --git a/plugins/providers/virtualbox/driver/version_4_2.rb b/plugins/providers/virtualbox/driver/version_4_2.rb
new file mode 100644
index 000000000..9510dfc8f
--- /dev/null
+++ b/plugins/providers/virtualbox/driver/version_4_2.rb
@@ -0,0 +1,461 @@
+require 'log4r'
+
+require File.expand_path("../base", __FILE__)
+
+module VagrantPlugins
+  module ProviderVirtualBox
+    module Driver
+      # Driver for VirtualBox 4.2.x
+      class Version_4_2 < Base
+        def initialize(uuid)
+          super()
+
+          @logger = Log4r::Logger.new("vagrant::provider::virtualbox_4_2")
+          @uuid = uuid
+        end
+
+        def clear_forwarded_ports
+          args = []
+          read_forwarded_ports(@uuid).each do |nic, name, _, _|
+            args.concat(["--natpf#{nic}", "delete", name])
+          end
+
+          execute("modifyvm", @uuid, *args) if !args.empty?
+        end
+
+        def clear_shared_folders
+          info = execute("showvminfo", @uuid, "--machinereadable", :retryable => true)
+          info.split("\n").each do |line|
+            if line =~ /^SharedFolderNameMachineMapping\d+="(.+?)"$/
+              execute("sharedfolder", "remove", @uuid, "--name", $1.to_s)
+            end
+          end
+        end
+
+        def create_dhcp_server(network, options)
+          execute("dhcpserver", "add", "--ifname", network,
+                  "--ip", options[:dhcp_ip],
+                  "--netmask", options[:netmask],
+                  "--lowerip", options[:dhcp_lower],
+                  "--upperip", options[:dhcp_upper],
+                  "--enable")
+        end
+
+        def create_host_only_network(options)
+          # Create the interface
+          execute("hostonlyif", "create") =~ /^Interface '(.+?)' was successfully created$/
+            name = $1.to_s
+
+          # Configure it
+          execute("hostonlyif", "ipconfig", name,
+                  "--ip", options[:adapter_ip],
+                  "--netmask", options[:netmask])
+
+          # Return the details
+          return {
+            :name => name,
+            :ip   => options[:adapter_ip],
+            :netmask => options[:netmask],
+            :dhcp => nil
+          }
+        end
+
+        def delete
+          execute("unregistervm", @uuid, "--delete")
+        end
+
+        def delete_unused_host_only_networks
+          networks = []
+          execute("list", "hostonlyifs").split("\n").each do |line|
+            networks << $1.to_s if line =~ /^Name:\s+(.+?)$/
+          end
+
+          execute("list", "vms").split("\n").each do |line|
+            if line =~ /^".+?"\s+\{(.+?)\}$/
+              info = execute("showvminfo", $1.to_s, "--machinereadable", :retryable => true)
+              info.split("\n").each do |line|
+                if line =~ /^hostonlyadapter\d+="(.+?)"$/
+                  networks.delete($1.to_s)
+                end
+              end
+            end
+          end
+
+          networks.each do |name|
+            # First try to remove any DHCP servers attached. We use `raw` because
+            # it is okay if this fails. It usually means that a DHCP server was
+            # never attached.
+            raw("dhcpserver", "remove", "--ifname", name)
+
+            # Delete the actual host only network interface.
+            execute("hostonlyif", "remove", name)
+          end
+        end
+
+        def discard_saved_state
+          execute("discardstate", @uuid)
+        end
+
+        def enable_adapters(adapters)
+          args = []
+          adapters.each do |adapter|
+            args.concat(["--nic#{adapter[:adapter]}", adapter[:type].to_s])
+
+            if adapter[:bridge]
+              args.concat(["--bridgeadapter#{adapter[:adapter]}",
+                          adapter[:bridge]])
+            end
+
+            if adapter[:hostonly]
+              args.concat(["--hostonlyadapter#{adapter[:adapter]}",
+                          adapter[:hostonly]])
+            end
+
+            if adapter[:mac_address]
+              args.concat(["--macaddress#{adapter[:adapter]}",
+                          adapter[:mac_address]])
+            end
+
+            if adapter[:nic_type]
+              args.concat(["--nictype#{adapter[:adapter]}", adapter[:nic_type].to_s])
+            end
+          end
+
+          execute("modifyvm", @uuid, *args)
+        end
+
+        def execute_command(command)
+          raw(*command)
+        end
+
+        def export(path)
+          # TODO: Progress
+          execute("export", @uuid, "--output", path.to_s)
+        end
+
+        def forward_ports(ports)
+          args = []
+          ports.each do |options|
+            pf_builder = [options[:name],
+              options[:protocol] || "tcp",
+              "",
+              options[:hostport],
+              "",
+              options[:guestport]]
+
+            args.concat(["--natpf#{options[:adapter] || 1}",
+                        pf_builder.join(",")])
+          end
+
+          execute("modifyvm", @uuid, *args) if !args.empty?
+        end
+
+        def halt
+          execute("controlvm", @uuid, "poweroff")
+        end
+
+        def import(ovf)
+          output = ""
+          total = ""
+          last  = 0
+          execute("import", ovf) do |type, data|
+            if type == :stdout
+              # Keep track of the stdout so that we can get the VM name
+              output << data
+            elsif type == :stderr
+              # Append the data so we can see the full view
+              total << data
+
+              # Break up the lines. We can't get the progress until we see an "OK"
+              lines = total.split("\n")
+              if lines.include?("OK.")
+                # The progress of the import will be in the last line. Do a greedy
+                # regular expression to find what we're looking for.
+                if lines.last =~ /.+(\d{2})%/
+                  current = $1.to_i
+                  if current > last
+                    last = current
+                    yield current if block_given?
+                  end
+                end
+              end
+            end
+          end
+
+          # Find the name of the VM name
+          if output !~ /Suggested VM name "(.+?)"/
+            @logger.error("Couldn't find VM name in the output.")
+            return nil
+          end
+
+          name = $1.to_s
+
+          output = execute("list", "vms")
+          if output =~ /^"#{Regexp.escape(name)}" \{(.+?)\}$/
+            return $1.to_s
+          end
+
+          nil
+        end
+
+        def read_forwarded_ports(uuid=nil, active_only=false)
+          uuid ||= @uuid
+
+          @logger.debug("read_forward_ports: uuid=#{uuid} active_only=#{active_only}")
+
+          results = []
+          current_nic = nil
+          info = execute("showvminfo", uuid, "--machinereadable", :retryable => true)
+          info.split("\n").each do |line|
+            # This is how we find the nic that a FP is attached to,
+            # since this comes first.
+            current_nic = $1.to_i if line =~ /^nic(\d+)=".+?"$/
+
+              # If we care about active VMs only, then we check the state
+              # to verify the VM is running.
+              if active_only && line =~ /^VMState="(.+?)"$/ && $1.to_s != "running"
+                return []
+              end
+
+            # Parse out the forwarded port information
+            if line =~ /^Forwarding.+?="(.+?),.+?,.*?,(.+?),.*?,(.+?)"$/
+              result = [current_nic, $1.to_s, $2.to_i, $3.to_i]
+              @logger.debug("  - #{result.inspect}")
+              results << result
+            end
+          end
+
+          results
+        end
+
+        def read_bridged_interfaces
+          execute("list", "bridgedifs").split("\n\n").collect do |block|
+            info = {}
+
+            block.split("\n").each do |line|
+              if line =~ /^Name:\s+(.+?)$/
+                info[:name] = $1.to_s
+              elsif line =~ /^IPAddress:\s+(.+?)$/
+                info[:ip] = $1.to_s
+              elsif line =~ /^NetworkMask:\s+(.+?)$/
+                info[:netmask] = $1.to_s
+              elsif line =~ /^Status:\s+(.+?)$/
+                info[:status] = $1.to_s
+              end
+            end
+
+            # Return the info to build up the results
+            info
+          end
+        end
+
+        def read_guest_additions_version
+          output = execute("guestproperty", "get", @uuid, "/VirtualBox/GuestAdd/Version",
+                           :retryable => true)
+          if output =~ /^Value: (.+?)$/
+            # Split the version by _ since some distro versions modify it
+            # to look like this: 4.1.2_ubuntu, and the distro part isn't
+            # too important.
+            value = $1.to_s
+            return value.split("_").first
+          end
+
+          return nil
+        end
+
+        def read_host_only_interfaces
+          dhcp = {}
+          execute("list", "dhcpservers", :retryable => true).split("\n\n").each do |block|
+            info = {}
+
+            block.split("\n").each do |line|
+              if line =~ /^NetworkName:\s+HostInterfaceNetworking-(.+?)$/
+                info[:network] = $1.to_s
+              elsif line =~ /^IP:\s+(.+?)$/
+                info[:ip] = $1.to_s
+              elsif line =~ /^lowerIPAddress:\s+(.+?)$/
+                info[:lower] = $1.to_s
+              elsif line =~ /^upperIPAddress:\s+(.+?)$/
+                info[:upper] = $1.to_s
+              end
+            end
+
+            # Set the DHCP info
+            dhcp[info[:network]] = info
+          end
+
+          execute("list", "hostonlyifs", :retryable => true).split("\n\n").collect do |block|
+            info = {}
+
+            block.split("\n").each do |line|
+              if line =~ /^Name:\s+(.+?)$/
+                info[:name] = $1.to_s
+              elsif line =~ /^IPAddress:\s+(.+?)$/
+                info[:ip] = $1.to_s
+              elsif line =~ /^NetworkMask:\s+(.+?)$/
+                info[:netmask] = $1.to_s
+              elsif line =~ /^Status:\s+(.+?)$/
+                info[:status] = $1.to_s
+              end
+            end
+
+            # Set the DHCP info if it exists
+            info[:dhcp] = dhcp[info[:name]] if dhcp[info[:name]]
+
+            info
+          end
+        end
+
+        def read_mac_address
+          info = execute("showvminfo", @uuid, "--machinereadable", :retryable => true)
+          info.split("\n").each do |line|
+            return $1.to_s if line =~ /^macaddress1="(.+?)"$/
+          end
+
+          nil
+        end
+
+        def read_machine_folder
+          execute("list", "systemproperties", :retryable => true).split("\n").each do |line|
+            if line =~ /^Default machine folder:\s+(.+?)$/i
+              return $1.to_s
+            end
+          end
+
+          nil
+        end
+
+        def read_network_interfaces
+          nics = {}
+          info = execute("showvminfo", @uuid, "--machinereadable", :retryable => true)
+          info.split("\n").each do |line|
+            if line =~ /^nic(\d+)="(.+?)"$/
+              adapter = $1.to_i
+              type    = $2.to_sym
+
+              nics[adapter] ||= {}
+              nics[adapter][:type] = type
+            elsif line =~ /^hostonlyadapter(\d+)="(.+?)"$/
+              adapter = $1.to_i
+              network = $2.to_s
+
+              nics[adapter] ||= {}
+              nics[adapter][:hostonly] = network
+            elsif line =~ /^bridgeadapter(\d+)="(.+?)"$/
+              adapter = $1.to_i
+              network = $2.to_s
+
+              nics[adapter] ||= {}
+              nics[adapter][:bridge] = network
+            end
+          end
+
+          nics
+        end
+
+        def read_state
+          output = execute("showvminfo", @uuid, "--machinereadable", :retryable => true)
+          if output =~ /^name="<inaccessible>"$/
+            return :inaccessible
+          elsif output =~ /^VMState="(.+?)"$/
+            return $1.to_sym
+          end
+
+          nil
+        end
+
+        def read_used_ports
+          ports = []
+          execute("list", "vms", :retryable => true).split("\n").each do |line|
+            if line =~ /^".+?" \{(.+?)\}$/
+              uuid = $1.to_s
+
+              # Ignore our own used ports
+              next if uuid == @uuid
+
+              read_forwarded_ports(uuid, true).each do |_, _, hostport, _|
+                ports << hostport
+              end
+            end
+          end
+
+          ports
+        end
+
+        def read_vms
+          results = []
+          execute("list", "vms", :retryable => true).split("\n").each do |line|
+            if line =~ /^".+?" \{(.+?)\}$/
+              results << $1.to_s
+            end
+          end
+
+          results
+        end
+
+        def set_mac_address(mac)
+          execute("modifyvm", @uuid, "--macaddress1", mac)
+        end
+
+        def set_name(name)
+          execute("modifyvm", @uuid, "--name", name)
+        end
+
+        def share_folders(folders)
+          folders.each do |folder|
+            args = ["--name",
+              folder[:name],
+              "--hostpath",
+              folder[:hostpath]]
+            args << "--transient" if folder.has_key?(:transient) && folder[:transient]
+            execute("sharedfolder", "add", @uuid, *args)
+          end
+        end
+
+        def ssh_port(expected_port)
+          @logger.debug("Searching for SSH port: #{expected_port.inspect}")
+
+          # Look for the forwarded port only by comparing the guest port
+          read_forwarded_ports.each do |_, _, hostport, guestport|
+            return hostport if guestport == expected_port
+          end
+
+          nil
+        end
+
+        def start(mode)
+          command = ["startvm", @uuid, "--type", mode.to_s]
+          r = raw(*command)
+
+          if r.exit_code == 0 || r.stdout =~ /VM ".+?" has been successfully started/
+            # Some systems return an exit code 1 for some reason. For that
+            # we depend on the output.
+            return true
+          end
+
+          # If we reached this point then it didn't work out.
+          raise Errors::VBoxManageError, :command => command.inspect
+        end
+
+        def suspend
+          execute("controlvm", @uuid, "savestate")
+        end
+
+        def verify!
+          # This command sometimes fails if kernel drivers aren't properly loaded
+          # so we just run the command and verify that it succeeded.
+          execute("list", "hostonlyifs")
+        end
+
+        def verify_image(path)
+          r = raw("import", path.to_s, "--dry-run")
+          return r.exit_code == 0
+        end
+
+        def vm_exists?(uuid)
+          raw("showvminfo", uuid).exit_code == 0
+        end
+      end
+    end
+  end
+end
diff --git a/plugins/providers/virtualbox/plugin.rb b/plugins/providers/virtualbox/plugin.rb
index d136209c0..258f1e140 100644
--- a/plugins/providers/virtualbox/plugin.rb
+++ b/plugins/providers/virtualbox/plugin.rb
@@ -23,6 +23,7 @@ module VagrantPlugins
       autoload :Meta, File.expand_path("../driver/meta", __FILE__)
       autoload :Version_4_0, File.expand_path("../driver/version_4_0", __FILE__)
       autoload :Version_4_1, File.expand_path("../driver/version_4_1", __FILE__)
+      autoload :Version_4_2, File.expand_path("../driver/version_4_2", __FILE__)
     end
   end
 end