5.23 Ensure 'Remote Desktop Services UserMode Port Redirector (UmRdpService)' is set to 'Disabled'

Information

Allows the redirection of Printers/Drives/Ports for RDP connections.

The recommended state for this setting is: Disabled.

Rationale:

In a security-sensitive environment, it is desirable to reduce the possible attack surface - preventing the redirection of COM, LPT and PnP ports will reduce the number of unexpected avenues for data exfiltration and/or malicious code transfer within an RDP session.

Impact:

Printers, drives and ports (COM, LPT, PnP, etc.) will not be allowed to be redirected inside RDP sessions.

Solution

To establish the recommended configuration via GP, set the following UI path to: Disabled.

Computer Configuration\Policies\Windows Settings\Security Settings\System Services\Remote Desktop Services UserMode Port Redirector

Default Value:

Manual

See Also

https://workbench.cisecurity.org/files/3714

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-7, CSCv6|9.1, CSCv7|9.2

Plugin: Windows

Control ID: 86426db68070d9d75dbdb94755cc65ebe7775c2869cb09bb908799fedc5b53af