The Windows Remote Management (WinRM) service must not allow unencrypted traffic.

From Windows Server 2016 Security Technical Implementation Guide

Part of SRG-OS-000393-GPOS-00173

Associated with: CCI-002890 CCI-003123

SV-88265r1_rule The Windows Remote Management (WinRM) service must not allow unencrypted traffic.

Vulnerability discussion

Unencrypted remote access to a system can allow sensitive information to be compromised. Windows remote management connections must be encrypted to prevent this.Satisfies: SRG-OS-000393-GPOS-00173, SRG-OS-000394-GPOS-00174

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\WinRM\Service\ Value Name: AllowUnencryptedTraffic Type: REG_DWORD Value: 0x00000000 (0)

Fix text

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> "Allow unencrypted traffic" to "Disabled".

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