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WN11-CC-000285 The Remote Desktop Session Host must require secure RPC communications.

DISA STIG library V2R11
All changes in this version
first version loaded CAT II

Maps to AC-17(2) via CCI-001453

Title

The Remote Desktop Session Host must require secure RPC communications.

Control

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: fEncryptRPCTraffic Value Type: REG_DWORD Value: 1

Discussion

Allowing unsecure RPC communication exposes the system to man in the middle attacks and data disclosure attacks. A man in the middle attack occurs when an intruder captures packets between a client and server and modifies them before allowing the packets to be exchanged. Usually the attacker will modify the information in the packets in an attempt to cause either the client or server to reveal sensitive information.

Related controls

CCI-001453

Fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Security "Require secure RPC communication" to "Enabled".