SV-221594r960963: Google Cast must be disabled. | Google Chrome Current Windows STIG SCAP Benchmark

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Assessment Title

Rule Text

Google Cast must be disabled.

Description

Discussion Text

If this policy is set to ”True” or is not set, Google Cast will be enabled, and users will be able to launch it from the app menu, page context menus, media controls on Cast-enabled websites, and (if shown) the “Cast toolbar” icon. If this policy set to ”False”, Google Cast will be disabled.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000381SV-96311V-81597

References

DPMS Target Google Chrome Current Windows DISA DPMS Target Google Chrome Current Windows 4081

Checks

DISA STIG (Manual Reference)

Universal method: 
 1. In the omnibox (address bar) type chrome://policy
 2. If "EnableMediaRouter" is not displayed under the "Policy Name" column or it is not set to "False", this is a finding.
Windows method:
 1. Start regedit
 2. Navigate to HKLM\Software\Policies\Google\Chrome\
 3. If the "EnableMediaRouter" value name does not exist or its value data is not set to "0", 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.chrome:def:520063
# Google Cast 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.

# Google Cast must be disabled.
# 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\Google\Chrome').GetValueKind('EnableMediaRouter').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Google\Chrome' -Name 'EnableMediaRouter' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'EnableMediaRouter') -eq '0'))
}

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 google_chrome target this check assesses.

# OVAL Definition: oval:mil.disa.stig.chrome:def:520063

if (-not (Test-Path -Path "HKLM:\Software\Policies\Google\Chrome\EnableMediaRouter")) {exit 0} else {if ((Get-ItemProperty -Path "HKLM:\Software\Policies\Google\Chrome\EnableMediaRouter" -ErrorAction SilentlyContinue).EnableMediaRouter -eq 0) {exit 0} else {exit 1}}

Remediation

Windows group policy:
1. Open the “group policy editor” tool with gpedit.msc
2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Google\Google Chrome\Google Cast
Policy Name: Enable Google Cast
Policy State: Disabled
Policy Value: N/A