SV-25067r3: The system must be configured to hide the computer from the browse list. | Windows 7 Security Technical Implementation Guide

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Assessment Title

Rule Text

The system must be configured to hide the computer from the browse list.

Description

Discussion Text

Identifying the computer name on a network could provide an attacker with information useful in gaining access. This setting prevents the computer name from displaying in the browse list.

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-000366CCE-8560-5

Additional Details

Responsibility

System Administrator

References

DPMS Target Windows 7 DISA DPMS Target Windows 7 1712

Checks

OVAL

oval:mil.disa.fso.windows:var:374800 ← xccdf_mil.disa.stig_value_MSS_Hidden_var

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

# Windows PowerShell
# Reconstructed from oval:mil.disa.fso.windows:def:3748
# The system must be configured to hide the computer from the browse list.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Verifies 'MSS: (Hidden) Hide computer from the browse list (Not Recommended except for highly secure environments' is set to 'Enabled'
# registry_object (registry_test)
function test_1 {
  return (((@{String='reg_sz';ExpandString='reg_expand_sz';Binary='reg_binary';DWord='reg_dword';MultiString='reg_multi_sz';QWord='reg_qword';None='reg_none'}[(Get-Item -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Lanmanserver\Parameters').GetValueKind('Hidden').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Lanmanserver\Parameters' -Name 'Hidden' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'Hidden') -eq 1))
}

if (test_1) {
  Write-Output "PASS"
} else {
  Write-Output "FAIL"
}

Assessment Script Powered by AISyntax-verified

A standalone PowerShell script to assess this control automatically. Review before running it in your environment.

Syntax-checked as valid PowerShell. Not executed here — running it for real needs the actual windows_7 target this check assesses.

# oval:mil.disa.fso.windows:def:3748
$regPath = "HKLM:\System\CurrentControlSet\Services\Lanmanserver\Parameters"
$regName = "Hidden"
if (Test-Path $regPath) {
    $regValue = Get-ItemProperty -Path $regPath -Name $regName -ErrorAction SilentlyContinue
    if ($regValue -and $regValue.Hidden -eq 1) {
        Write-Output "PASS"
        exit 0
    }
}
Write-Output "FAIL"
exit 1

Remediation

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "MSS: (Hidden) Hide Computer From the Browse List (not recommended except for highly secure environments)" to "Enabled".