Title

The system must be configured to prevent anonymous users from having the same rights as the Everyone group. (Cat II impact)

Discussion

Access by anonymous users must be restricted. If this setting is enabled, then anonymous users have the same rights and permissions as the built-in Everyone group. Anonymous users must not have these permissions or rights.

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: EveryoneIncludesAnonymous Value Type: REG_DWORD Value: 0

Fix Text

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".

Additional Identifiers

Rule ID: SV-220931r991589_rule

Vulnerability ID: V-220931

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.