SV-25267r2: Unsigned gadgets must not be installed. | Windows 7 Security Technical Implementation Guide

Loading benchmark…

Assessment Title

Rule Text

Unsigned gadgets must not be installed.

Description

Discussion Text

Uncontrolled installation of applications can introduce various issues, including system instability, and allow access to sensitive information. Installation of applications must be controlled by the enterprise. This setting prevents unsigned gadgets from being installed.

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

IA Controls

NIST SP 800-53

Not mappedCCI-001812CCE-10811-8

Additional Details

Responsibility

System Administrator

References

DPMS Target Windows 7 DISA DPMS Target Windows 7 1712

Checks

OVAL

oval:mil.disa.fso.windows:var:383200 ← xccdf_mil.disa.stig_value_disable_unpacking_installation_gadgets_not_digitally_signed_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:3832
# Unsigned gadgets must not be installed.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Verifies 'Restrict unpacking and installation of gadgets that are not digitally signed' 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\Software\Microsoft\Windows\CurrentVersion\Policies\Windows\Sidebar').GetValueKind('TurnOffUnsignedGadgets').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Windows\Sidebar' -Name 'TurnOffUnsignedGadgets' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'TurnOffUnsignedGadgets') -eq 1))
}
# Verifies 'Turn off desktop gadgets' is set to 'Enabled'
# registry_object (registry_test)
function test_2 {
  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\CurrentVersion\Policies\Windows\Sidebar').GetValueKind('TurnOffSidebar').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Windows\Sidebar' -Name 'TurnOffSidebar' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'TurnOffSidebar') -eq 1))
}

if ((test_1 -or test_2)) {
  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 Definition: oval:mil.disa.fso.windows:def:3832
$compliant = (Get-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\Windows\Sidebar' -Name 'TurnOffUnsignedGadgets' -ErrorAction SilentlyContinue).TurnOffUnsignedGadgets -eq 1 -or (Get-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\Windows\Sidebar' -Name 'TurnOffSidebar' -ErrorAction SilentlyContinue).TurnOffSidebar -eq 1
if ($compliant) { Write-Output "PASS"; exit 0 } else { Write-Output "FAIL"; exit 1 }

Remediation

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Desktop Gadgets ->  "Restrict unpacking and installation of gadgets that are not digitally signed" to "Enabled".   

				To turn off Desktop Gadgets completely, configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Desktop Gadgets -> "Turn off desktop gadgets" to "Enabled".