Microsoft Windows Server 2019

Windows Server 2019 Windows Remote Management (WinRM) client must not allow unencrypted traffic

STIG ID: WN19-CC-000480 | SRG: SRG-OS-000393-GPOS-00173 | Severity: Medium | CCI: CCI-002890,CCI-003123 | Vulnerability ID: V-205816

Description

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

C-6081r355810_chk

If the following registry value does not exist or is not configured as specified, this is a finding:Registry Hive: HKEY_LOCAL_MACHINERegistry Path: \SOFTWARE\Policies\Microsoft\Windows\WinRM\Client\Value Name: AllowUnencryptedTrafficType: REG_DWORDValue: 0x00000000 (0)

Fix

F-6081r355811_fix

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