Virtual machines (VMs) must have copy operations disabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-258703	VMCH-80-000189	SV-258703r933170_rule		Low

Description
Copy and paste operations are disabled by default; however, explicitly disabling this feature will enable audit controls to verify this setting is correct. Copy, paste, drag and drop, or GUI copy/paste operations between the guest operating system and the remote console could provide the means for an attacker to compromise the VM.

STIG	Date
VMware vSphere 8.0 Virtual Machine Security Technical Implementation Guide	2023-10-11

Details

Check Text ( C-62443r933168_chk )
For each virtual machine do the following: From the vSphere Client, right-click the Virtual Machine and go to Edit Settings >> Advanced Parameters. Verify the "isolation.tools.copy.disable" value is set to "true". 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 isolation.tools.copy.disable If the virtual machine advanced setting "isolation.tools.copy.disable" is not set to "true", this is a finding. If the virtual machine advanced setting "isolation.tools.copy.disable" does not exist, this is not a finding.

Check Text ( C-62443r933168_chk )

For each virtual machine do the following:

From the vSphere Client, right-click the Virtual Machine and go to Edit Settings >> Advanced Parameters.

Verify the "isolation.tools.copy.disable" value is set to "true".

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 isolation.tools.copy.disable

If the virtual machine advanced setting "isolation.tools.copy.disable" is not set to "true", this is a finding.

If the virtual machine advanced setting "isolation.tools.copy.disable" does not exist, this is not a finding.

Fix Text (F-62352r933169_fix)
For each virtual machine do the following: From the vSphere Client, right-click the Virtual Machine and go to Edit Settings >> Advanced Parameters. Find the "isolation.tools.copy.disable" value and set it to "true". If the setting does not exist no action is needed. 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 isolation.tools.copy.disable \| Set-AdvancedSetting -Value true Note: The VM must be powered off to configure the advanced settings through the vSphere Client. Therefore, it is recommended to configure these settings with PowerCLI as this can be done while the VM is powered on. Settings do not take effect via either method until the virtual machine is cold started, not rebooted.

Fix Text (F-62352r933169_fix)

For each virtual machine do the following:

From the vSphere Client, right-click the Virtual Machine and go to Edit Settings >> Advanced Parameters.

Find the "isolation.tools.copy.disable" value and set it to "true".

If the setting does not exist no action is needed.

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 isolation.tools.copy.disable | Set-AdvancedSetting -Value true

Note: The VM must be powered off to configure the advanced settings through the vSphere Client. Therefore, it is recommended to configure these settings with PowerCLI as this can be done while the VM is powered on. Settings do not take effect via either method until the virtual machine is cold started, not rebooted.