SV-29215r1: Ejection of removable NTFS media is not restricted to Administrators. | Windows Vista Security Technical Implementation Guide

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Assessment Title

Rule Text

Ejection of removable NTFS media is not restricted to Administrators.

Description

Discussion Text

Removable hard drives can be formatted and ejected by others who are not members of the Administrators Group, if they are not properly configured. Formatting and ejecting removable NTFS media should only be done by administrators.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366CCE-3225-0

Additional Details

Third-Party Tools

Responsibility

System Administrator

References

DPMS Target Windows Vista DISA DPMS Target Windows Vista 1029

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:446
# Ejection of removable NTFS media is not restricted to Administrators.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# registry_object (registry_test)
function test_1 {
  return (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\WinLogon' -Name 'AllocateDASD' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'AllocateDASD') -eq 0)
}
# registry_object (registry_test)
function test_2 {
  return (-not ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\WinLogon' -Name 'AllocateDASD')))
}
# registry_object (registry_test)
function test_3 {
  return ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\WinLogon' -Name 'AllocateDASD'))
}
# registry_object (registry_test)
function test_4 {
  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\Software\Microsoft\Windows NT\CurrentVersion\WinLogon').GetValueKind('AllocateDASD').ToString()]) -eq 'reg_sz')
}
# registry_object (registry_test)
function test_5 {
  return (-not ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\WinLogon' -Name 'AllocateDASD')))
}

if (((test_1 -or test_2) -and test_3 -and (test_4 -or test_5))) {
  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_vista target this check assesses.

# oval:mil.disa.fso.windows:def:446 compliance check
if (!(Get-ItemProperty -Path "HKLM:\Software\Microsoft\Windows NT\CurrentVersion\WinLogon" -ErrorAction SilentlyContinue) -or (Get-ItemProperty -Path "HKLM:\Software\Microsoft\Windows NT\CurrentVersion\WinLogon" -ErrorAction SilentlyContinue).AllocateDASD -eq 0 -or (Get-ItemProperty -Path "HKLM:\Software\Microsoft\Windows NT\CurrentVersion\WinLogon" -ErrorAction SilentlyContinue).AllowedToFormatRemovableMedia -notcontains "Administrators") {Write-Output "FAIL"; exit 1} else {Write-Output "PASS"; exit 0}

Remediation

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “Devices: Allowed to Format and Eject Removable Media” to “Administrators”.