SV-45417r1: The Internet Explorer warning about certificate address mismatch must be enforced. | Microsoft Internet Explorer 10 Security Technical Implementation Guide

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Assessment Title

Rule Text

The Internet Explorer warning about certificate address mismatch must be enforced.

Description

Discussion Text

This parameter warns users if the certificate being presented by the website is invalid. Since server certificates are used to validate the identity of the web server it is critical to warn the user of a potential issue with the certificate being presented by the web server. This setting aids to prevent spoofing attacks.

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

Additional Details

Responsibility

System Administrator

References

DPMS Target IE Version 10 DISA DPMS Target IE Version 10 2351

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:265
# The Internet Explorer warning about certificate address mismatch must be enforced.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Turn on certificate address mismatch warning
# 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').GetValueKind('WarnOnBadCertRecving').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings' -Name 'WarnOnBadCertRecving' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'WarnOnBadCertRecving') -eq 1))
}

if (-not (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_ie10 target this check assesses.

# OVAL Definition: oval:mil.disa.fso.ie:def:265
$registryPath = "HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings"
$registryName = "WarnOnBadCertRecving"
$registryValue = 1
if (Test-Path $registryPath) {
    $reg = Get-ItemProperty -Path $registryPath -Name $registryName -ErrorAction SilentlyContinue
    if ($reg -and $reg.$registryName -eq $registryValue) {
        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 "Turn on certificate address mismatch warning" to "Enabled".