Microsoft Windows Server 2016
Anonymous enumeration of Security Account Manager (SAM) accounts must not be allowed
STIG ID:
WN16-SO-000260
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SRG:
SRG-OS-000480-GPOS-00227
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Severity:
High
|
CCI:
CCI-000366
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Vulnerability ID:
V-225045
Description
Anonymous enumeration of SAM accounts allows anonymous logon users (null session connections) to list all accounts names, thus providing a list of potential points to attack the system.
Check
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: RestrictAnonymousSAMValue Type: REG_DWORDValue: 0x00000001 (1)
Fix
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Do not allow anonymous enumeration of SAM accounts" to "Enabled".