An error occurred:

Check: WN19-CC-000480

Microsoft Windows Server 2019 STIG: WN19-CC-000480 (in versions v3 r2 through v1 r1)

Title

Windows Server 2019 Windows Remote Management (WinRM) client must not allow unencrypted traffic. (Cat II impact)

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\Client\ 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 Client >> "Allow unencrypted traffic" to "Disabled".

Additional Identifiers

Rule ID: SV-205816r958848_rule

Vulnerability ID: V-205816

Group Title: SRG-OS-000393-GPOS-00173

Expert Comments

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CCIs

CCIs tied to check.
Number Definition
CCI-002890

Implement organization-defined cryptographic mechanisms to protect the integrity of nonlocal maintenance and diagnostic communications.
CCI-003123

Implement organization-defined cryptographic mechanisms to protect the confidentiality of nonlocal maintenance and diagnostic communications.

Controls

Controls tied to check. These are derived from the CCIs shown above.
Number Title
MA-4(6)

Cryptographic Protection