SV-225383r569185: Remote Desktop Services must delete temporary folders when a session is terminated. | Microsoft Windows Server 2012/2012 R2 Member Server STIG SCAP Benchmark

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Assessment Title

Rule Text

Remote Desktop Services must delete temporary folders when a session is terminated.

Description

Discussion Text

Remote desktop session temporary folders must always be deleted after a session is over to prevent hard disk clutter and potential leakage of information. This setting controls the deletion of the temporary folders when the session is terminated.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366CCE-24304-8SV-52901V-3456

References

DPMS Target Microsoft Windows Server 2012-2012 R2 MS DISA DPMS Target Microsoft Windows Server 2012-2012 R2 MS 4214

Checks

OVAL

oval:mil.disa.fso.windows:var:451700 ← xccdf_mil.disa.stig_value_do_not_delete_temp_folder_upon_exit_var

DISA STIG (Manual Reference)

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: \Software\Policies\Microsoft\Windows NT\Terminal Services\

Value Name: DeleteTempDirsOnExit

Type: REG_DWORD
Value: 1

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:4517
# Remote Desktop Services must delete temporary folders when a session is terminated.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Verifies 'Do not delete temp folder upon exit' is set to 'Disabled'
# 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\Software\Policies\Microsoft\Windows NT\Terminal Services').GetValueKind('DeleteTempDirsOnExit').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\Terminal Services' -Name 'DeleteTempDirsOnExit' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'DeleteTempDirsOnExit') -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 ms_windows_2012_and_2012_r2_ms target this check assesses.

# OVAL Definition: oval:mil.disa.fso.windows:def:4517
$compliant = Test-Path -Path "HKLM:\Software\Policies\Microsoft\Windows NT\Terminal Services" -and (Get-ItemProperty -Path "HKLM:\Software\Policies\Microsoft\Windows NT\Terminal Services" -ErrorAction SilentlyContinue).DeleteTempDirsOnExit -eq 1
if ($compliant) { Write-Output "PASS"; Exit 0 } else { Write-Output "FAIL"; Exit 1 }

Remediation

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Remote Desktop Services -> Remote Desktop Session Host -> Temporary Folders -> "Do not delete temp folder upon exit" to "Disabled".