Microsoft Windows Server 2019
Windows Server 2019 services using Local System that use Negotiate when reverting to NTLM authentication must use the computer identity instead of authenticating anonymously
STIG ID:
WN19-SO-000260
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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-205916
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
C-6181r356110_chk
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
F-6181r356111_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".