Services using Local System that use Negotiate when reverting to NTLM authentication must use the computer identity vs. authenticating anonymously.

From Windows 10 Security Technical Implementation Guide

Associated with: CCI-000778

SV-78253r1_rule Services using Local System that use Negotiate when reverting to NTLM authentication must use the computer identity vs. authenticating anonymously.

Vulnerability discussion

Services using Local System that use Negotiate when reverting to NTLM authentication may gain unauthorized access if allowed to authenticate anonymously vs. using the computer identity.

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: \SYSTEM\CurrentControlSet\Control\LSA\ Value Name: UseMachineId Value Type: REG_DWORD Value: 1

Fix text

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Allow Local System to use computer identity for NTLM" to "Enabled".

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