The Windows Remote Management (WinRM) client must not use Digest authentication.

From Windows Server 2012/2012 R2 Member Server Security Technical Implementation Guide

Associated with IA controls: IAIA-1

Associated with: CCI-000877

SV-51754r1_rule The Windows Remote Management (WinRM) client must not use Digest authentication.

Vulnerability discussion

Digest authentication is not as strong as other options and may be subject to man-in-the-middle attacks.

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: AllowDigest Type: REG_DWORD Value: 0

Fix text

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Remote Management (WinRM) -> WinRM Client -> "Disallow Digest authentication" to "Enabled".

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