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Check: WN10-CC-000275

Microsoft Windows 10 STIG: WN10-CC-000275 (in versions v2 r9 through v1 r7)

Title

Local drives must be prevented from sharing with Remote Desktop Session Hosts. (Cat II impact)

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 Value 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".

Additional Identifiers

Rule ID: SV-220849r569187_rule

Vulnerability ID: V-220849

Group Title: SRG-OS-000138-GPOS-00069

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-001090	The information system prevents unauthorized and unintended information transfer via shared system resources.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
SC-4	Information In Shared Resources