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Anonymous access to Named Pipes and Shares must be restricted.


Overview

Finding ID Version Rule ID IA Controls Severity
V-225498 WN12-SO-000058 SV-225498r569185_rule High
Description
Allowing anonymous access to named pipes or shares provides the potential for unauthorized system access. This setting restricts access to those defined in "Network access: Named Pipes that can be accessed anonymously" and "Network access: Shares that can be accessed anonymously", both of which must be blank under other requirements.
STIG Date
Microsoft Windows Server 2012/2012 R2 Member Server Security Technical Implementation Guide 2021-10-18

Details

Check Text ( C-27197r471836_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\Services\LanManServer\Parameters\

Value Name: RestrictNullSessAccess

Value Type: REG_DWORD
Value: 1
Fix Text (F-27185r471837_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Network access: Restrict anonymous access to Named Pipes and Shares" to "Enabled".