SV-235742r960963: WebUSB must be disabled. | Microsoft Edge STIG SCAP Benchmark

Loading benchmark…

Assessment Title

Rule Text

WebUSB must be disabled.

Description

Discussion Text

Set whether websites can access connected USB devices. Access can be blocked completely or the user asked each time a website wants to get access to connected USB devices. Override this policy for specific URL patterns by using the WebUsbAskForUrls and WebUsbBlockedForUrls policies. If this policy is not configured, sites can ask users whether they can access the connected USB devices ('AskWebUsb') by default, and users can change this setting.

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/Control use of the WebUSB API" must be set to "enabled" with the option value set to "Do not allow any site to request access to USB devices via the WebUSB API".

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

If the value for "DefaultWebUsbGuardSetting" 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:120
# WebUSB 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('DefaultWebUsbGuardSetting').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge' -Name 'DefaultWebUsbGuardSetting' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'DefaultWebUsbGuardSetting') -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:120
$compliant = Test-Path "HKLM:\SOFTWARE\Policies\Microsoft\Edge" -and (Get-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Edge" -Name DefaultWebUsbGuardSetting -ErrorAction SilentlyContinue).DefaultWebUsbGuardSetting -eq 2
if ($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/Control use of the WebUSB API" to enabled" and select "Do not allow any site to request access to USB devices via the WebUSB API".