SV-223137r960963: Scripting of Internet Explorer WebBrowser Control must be disallowed (Restricted Sites zone). | Microsoft Internet Explorer 11 STIG SCAP Benchmark

Loading benchmark…

Assessment Title

Rule Text

Scripting of Internet Explorer WebBrowser Control must be disallowed (Restricted Sites zone).

Description

Discussion Text

This policy setting controls whether a page may control embedded WebBrowser Control via script. Scripted code hosted on sites located in this zone is more likely to contain malicious code. If you enable this policy setting, script access to the WebBrowser Control is allowed. If you disable this policy setting, script access to the WebBrowser Control is not allowed. If you do not configure this policy setting, script access to the WebBrowser Control can be enabled or disabled by the user. By default, script access to the WebBrowser Control is only allowed in the Local Machine and Intranet Zones.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000381SV-59749V-46883

References

DPMS Target Microsoft Internet Explorer 11 DISA DPMS Target Microsoft Internet Explorer 11 4095

Checks

OVAL

oval:mil.disa.fso.ie:var:52400 ← xccdf_mil.disa.stig_value_AllowScriptingOfInternetExplorerWebBrowserControl_RestrictedSitesZone_LocalComputer_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.ie:def:524
# Scripting of Internet Explorer WebBrowser Control must be disallowed (Restricted Sites zone).
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Computer Configuration\Network\Internet Explorer\Internet Control Panel\Security Page\Restricted Sites Zone\Allow scripting of Internet Explorer web browser control
# 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\CurrentVersion\Internet Settings\Zones\4').GetValueKind('1206').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4' -Name '1206' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty '1206') -eq 3))
}

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_ie11 target this check assesses.

# OVAL Definition: oval:mil.disa.fso.ie:def:524
$regPath = "HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4"
if (Test-Path $regPath) {
    $regValue = (Get-ItemProperty -Path $regPath -Name "1206").1206
    if ($regValue -eq 3) {
        Write-Output "PASS"; exit 0
    }
}
Write-Output "FAIL"; exit 1

Remediation

Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Allow scripting of Internet Explorer WebBrowser controls' to 'Enabled', and select 'Disable' from the drop-down box.