Virtual machines (VMs) must be configured to lock when the last console connection is closed.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-258714 | SRG-OS-000480-VMM-002000 | VMCH-80-000201 | SV-258714r959010_rule | 2024-07-11 | 2 |
| 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. |
| ℹ️ Check |
|---|
| 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 |
|---|
| 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 |