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Check: WN11-CC-000350

Microsoft Windows 11 STIG: WN11-CC-000350 (in versions v2 r2 through v1 r1)

Title

The Windows Remote Management (WinRM) service 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.

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 Value Type: REG_DWORD Value: 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".

Additional Identifiers

Rule ID: SV-253419r958850_rule

Vulnerability ID: V-253419

Group Title: SRG-OS-000394-GPOS-00174

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-003093	Integrate the organizational information security risk management process into system development life cycle activities.
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
SA-3	System Development Life Cycle