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  3. CIS Microsoft Windows 10 Enterprise Release 21H1 V1.11.0 L2 Bl
  4. Ensure ‘Remote Desktop Services UserMode Port Redirector (UmRdpService)’ is set to ‘Disabled’

Ensure ‘Remote Desktop Services UserMode Port Redirector (UmRdpService)’ is set to ‘Disabled’

Details

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 ConfigurationPoliciesWindows SettingsSecurity SettingsSystem ServicesRemote Desktop Services UserMode Port Redirector

Default Value:

Manual

Supportive Information

The following resource is also helpful.

This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Windows.

References

Source

Updated on July 16, 2022
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