SV-14860r1: Terminal Services / Remote Desktop Services - Local drives prevented from sharing with Terminal Servers. | Windows Vista Security Technical Implementation Guide

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Assessment Title

Rule Text

Terminal Services / Remote Desktop Services - Local drives prevented from sharing with Terminal Servers.

Description

Discussion Text

This check verifies that the system is configured to prevent users from sharing the local drives on their client computers to Terminal Servers that they access.

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

IA Controls

NIST SP 800-53

Not mappedCCI-001090CCE-2874-6

Additional Details

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:512
# Terminal Services / Remote Desktop Services - Local drives prevented from sharing with Terminal Servers.
# 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\Policies\Microsoft\Windows NT\Terminal Services' -Name 'fDisableCdm' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'fDisableCdm') -eq 1)
}
# registry_object (registry_test)
function test_2 {
  return (-not ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\Terminal Services' -Name 'fDisableCdm')))
}
# registry_object (registry_test)
function test_3 {
  return ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\Terminal Services' -Name 'fDisableCdm'))
}
# 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\Policies\Microsoft\Windows NT\Terminal Services').GetValueKind('fDisableCdm').ToString()]) -eq 'reg_dword')
}
# registry_object (registry_test)
function test_5 {
  return (-not ($null -ne (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\Terminal Services' -Name 'fDisableCdm')))
}

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 Definition: oval:mil.disa.fso.windows:def:512
$compliant = (Get-ItemProperty -Path "HKLM:\Software\Policies\Microsoft\Windows NT\Terminal Services" -ErrorAction SilentlyContinue).fDisableCdm -eq $null -or (Get-ItemProperty -Path "HKLM:\Software\Policies\Microsoft\Windows NT\Terminal Services" -ErrorAction SilentlyContinue).fDisableCdm -eq 1
if ($compliant) { Write-Output "PASS"; Exit 0 } else { Write-Output "FAIL"; Exit 1 }

Remediation

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Terminal Services -> Terminal Server -> Device and Resource Redirection “Do not allow drive redirection” to “Enabled”.