Local drives must be prevented from sharing with Remote Desktop Session Hosts. (Remote Desktop Services Role).

From Windows Server 2012/2012 R2 Domain Controller Security Technical Implementation Guide

Associated with: CCI-001090

SV-52959r1_rule Local drives must be prevented from sharing with Remote Desktop Session Hosts. (Remote Desktop Services Role).

Vulnerability discussion

Preventing users from sharing the local drives on their client computers to Remote Session Hosts that they access helps reduce possible exposure of sensitive data.

Check content

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: fDisableCdm Type: REG_DWORD Value: 1

Fix text

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Remote Desktop Services -> Remote Desktop Session Host -> Device and Resource Redirection -> "Do not allow drive redirection" to "Enabled".

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