Windows Server 2019 must not allow anonymous enumeration of shares.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-205724 | WN19-SO-000230 | SV-205724r958524_rule | CCI-001090 | 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 | |||
| Microsoft Windows Server 2019 Security Technical Implementation Guide | 2025-05-23 | |||
Related Frameworks
3 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
SC-4
1.00
- DISA · 3 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1711 mapping
3.13.4
1.00
- DISA · 3 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-001090
1.00
- DISA · 3 · disa_xccdf · related
Details
Check Text (C-205724r958524_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: RestrictAnonymous
Value Type: REG_DWORD
Value: 0x00000001 (1)
Fix Text (F-5989r355091_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 and shares" to "Enabled".