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Check: WN19-CC-000350

Microsoft Windows Server 2019 STIG: WN19-CC-000350 (in versions v3 r2 through v1 r1)

Title

Windows Server 2019 Remote Desktop Services must prevent drive redirection. (Cat II impact)

Discussion

Preventing users from sharing the local drives on their client computers with 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: 0x00000001 (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-205722r958524_rule

Vulnerability ID: V-205722

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

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-001090	Prevent 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