SV-235725r960963: The ability of sites to show pop-ups must be disabled. | Microsoft Edge STIG SCAP Benchmark

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Assessment Title

Rule Text

The ability of sites to show pop-ups must be disabled.

Description

Discussion Text

Set whether websites can show pop-up windows. Pop-ups can be allowed on all websites ("AllowPopups") or blocked on all sites ("BlockPopups"). If this policy is configured, pop-up windows are blocked by default, and users can change this setting. Policy options mapping: - AllowPopups (1) = Allow all sites to show pop-ups. - BlockPopups (2) = Do not allow any site to show pop-ups.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000381

References

DPMS Target Microsoft Edge DISA DPMS Target Microsoft Edge 5280

Checks

DISA STIG (Manual Reference)

The policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Content settings/Default pop-up window setting" must be set to "Enabled" with the option value set to "Do not allow any site to show  pop-ups".

Use the Windows Registry Editor to navigate to the following key:
HKLM\SOFTWARE\Policies\Microsoft\Edge

If the value for DefaultPopupsSetting is not set to "REG_DWORD = 2", this is a finding.

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.stig.edge:def:104
# The ability of sites to show pop-ups must be disabled.
# 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 (((@{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\Edge').GetValueKind('DefaultPopupsSetting').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge' -Name 'DefaultPopupsSetting' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'DefaultPopupsSetting') -eq 2))
}

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_edge target this check assesses.

# OVAL Definition: oval:mil.disa.stig.edge:def:104
$compliant = Test-Path -Path "HKLM:\SOFTWARE\Policies\Microsoft\Edge" -and (Get-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Edge" -Name DefaultPopupsSetting -ErrorAction SilentlyContinue).DefaultPopupsSetting -eq 2
if ($compliant) { Write-Output "PASS"; Exit 0 } else { Write-Output "FAIL"; Exit 1 }

Remediation

Set the policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Content settings/Default pop-up window setting" to "Enabled" with the option value set to "Do not allow any site to show  pop-ups".