Virtual machines (VMs) must be configured to lock when the last console connection is closed.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-258714 | VMCH-80-000201 | SV-258714r933203_rule | CCI-000366 | medium |
| Description | ||||
| When accessing the VM console, the guest operating system must be locked when the last console user disconnects, limiting the possibility of session hijacking. This setting only applies to Windows-based VMs with VMware tools installed. | ||||
| STIG | Date | |||
| VMware vSphere 8.0 Virtual Machine Security Technical Implementation Guide | 2023-10-11 | |||
Details
Check Text (C-258714r933203_chk)
For each virtual machine do the following:
From the vSphere Client, right-click the Virtual Machine and go to Edit Settings >> VM Options >> VMware Remote Console Options.
Verify the option "Lock the guest operating system when the last remote user disconnects" is checked.
or
From a PowerCLI command prompt while connected to the ESXi host or vCenter server, run the following command:
Get-VM "VM Name" | Get-AdvancedSetting -Name tools.guest.desktop.autolock
If the virtual machine advanced setting "tools.guest.desktop.autolock" is not set to "true", this is a finding.
If the virtual machine advanced setting "tools.guest.desktop.autolock" does not exist, this is not a finding.
Fix Text (F-62363r933202_fix)
For each virtual machine do the following:
From the vSphere Client, right-click the Virtual Machine and go to Edit Settings >> VM Options >> VMware Remote Console Options.
Check the box next to "Lock the guest operating system when the last remote user disconnects". Click "OK".
or
From a PowerCLI command prompt while connected to the ESXi host or vCenter server, run the following command:
Get-VM "VM Name" | Get-AdvancedSetting -Name tools.guest.desktop.autolock | Set-AdvancedSetting -Value true