Microsoft Windows Server 2016
Services using Local System that use Negotiate when reverting to NTLM authentication must use the computer identity instead of authenticating anonymously
STIG ID:
WN16-SO-000320
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SRG:
SRG-OS-000480-GPOS-00227
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Severity:
Medium
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CCI:
CCI-000366
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Vulnerability ID:
V-225049
Description
Services using Local System that use Negotiate when reverting to NTLM authentication may gain unauthorized access if allowed to authenticate anonymously versus using the computer identity.
Check
If the following registry value does not exist or is not configured as specified, this is a finding.Registry Hive: HKEY_LOCAL_MACHINERegistry Path: \SYSTEM\CurrentControlSet\Control\LSA\Value Name: UseMachineIdType: REG_DWORDValue: 0x00000001 (1)
Fix
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".