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

From Windows Server 2016 Security Technical Implementation Guide

Associated with: CCI-000877

SV-88257r1_rule The Windows Remote Management (WinRM) client must not use Basic authentication.

Vulnerability discussion

Basic authentication uses plain-text passwords that could be used to compromise a system. Disabling Basic authentication will reduce this potential.

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: AllowBasic 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 Basic authentication" to "Disabled".

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