The system must disconnect unauthorized serial devices.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-64099	VMCH-06-000031	SV-78589r1_rule		Medium

Description
Ensure that no device is connected to a virtual machine if it is not required. For example, floppy, serial and parallel ports are rarely used for virtual machines in a datacenter environment, and CD/DVD drives are usually connected only temporarily during software installation.

STIG	Date
VMware vSphere Virtual Machine Version 6 Security Technical Implementation Guide	2015-12-09

Details

Check Text ( C-64849r1_chk )
From the vSphere Client select the Virtual Machine right click and go to Edit Settings. Review the VMs hardware and verify no serial devices exist. or From a PowerCLI command prompt while connected to the ESXi host or vCenter server run the following command: Get-VM \| Where {$_.ExtensionData.Config.Hardware.Device.DeviceInfo.Label -match "serial"} If a virtual machine has a serial device present, this is a finding.

Check Text ( C-64849r1_chk )

From the vSphere Client select the Virtual Machine right click and go to Edit Settings. Review the VMs hardware and verify no serial devices exist.

or

From a PowerCLI command prompt while connected to the ESXi host or vCenter server run the following command:

Get-VM | Where {$_.ExtensionData.Config.Hardware.Device.DeviceInfo.Label -match "serial"}

If a virtual machine has a serial device present, this is a finding.

Fix Text (F-70027r1_fix)
The VM must be powered off in order to remove a serial device. From the vSphere Client select the Virtual Machine right click and go to Edit Settings. Select the serial device and click remove then OK.