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Anonymous enumeration of shares must be restricted.


Overview

Finding ID Version Rule ID IA Controls Severity
V-1093 3.018 SV-25090r2_rule High
Description
Allowing anonymous logon users (null session connections) to list all account names and enumerate all shared resources can provide a map of potential points to attack the system.
STIG Date
Windows 7 Security Technical Implementation Guide 2017-02-21

Details

Check Text ( C-62053r2_chk )
Analyze the system using the Security Configuration and Analysis snap-in.
Expand the Security Configuration and Analysis tree view.
Navigate to Local Policies >> Security Options.

If the value for "Network access: Do not allow anonymous enumeration of SAM accounts and shares" is not set to "Enabled", this is a finding.

The policy referenced configures the following registry value:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\

Value Name: RestrictAnonymous

Value Type: REG_DWORD
Value: 1
Fix Text (F-66951r1_fix)
Configure the policy values for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Do not allow anonymous enumeration of SAM accounts and shares" to "Enabled".