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Windows Server 2019 must be configured to prevent anonymous users from having the same permissions as the Everyone group.


Overview

Finding ID Version Rule ID IA Controls Severity
V-205915 WN19-SO-000240 SV-205915r569188_rule Medium
Description
Access by anonymous users must be restricted. If this setting is enabled, anonymous users have the same rights and permissions as the built-in Everyone group. Anonymous users must not have these permissions or rights.
STIG Date
Microsoft Windows Server 2019 Security Technical Implementation Guide 2021-08-18

Details

Check Text ( C-6180r356107_chk )
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: EveryoneIncludesAnonymous

Value Type: REG_DWORD
Value: 0x00000000 (0)
Fix Text (F-6180r356108_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Let Everyone permissions apply to anonymous users" to "Disabled".