SV-251558r960963: Background submission of information to Mozilla must be disabled. | Mozilla Firefox for Windows STIG SCAP Benchmark

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Assessment Title

Rule Text

Background submission of information to Mozilla must be disabled.

Description

Discussion Text

Firefox by default sends information about Firefox to Mozilla servers. There should be no background submission of technical and other information from DoD computers to Mozilla with portions posted publicly.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000381

References

DPMS Target Mozilla Firefox 2021 VERSION DISA DPMS Target Mozilla Firefox 2021 VERSION 5446

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.firefox.windows:def:113
# Background submission of information to Mozilla 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.

# Software\Policies\Mozilla\Firefox\DisableTelemetry is set to 1 reg_dword
# 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\Mozilla\Firefox').GetValueKind('DisableTelemetry').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox' -Name 'DisableTelemetry' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'DisableTelemetry') -eq 1))
}

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 moz_firefox_windows target this check assesses.

# OVAL Definition: oval:mil.disa.stig.firefox.windows:def:113
$registryPath = "HKLM:\SOFTWARE\Policies\Mozilla\Firefox"
$registryKey = "DisableTelemetry"
$expectedValue = 1
if (Test-Path $registryPath -ErrorAction SilentlyContinue) {
    $registryValue = (Get-ItemProperty -Path $registryPath -Name $registryKey -ErrorAction SilentlyContinue).$registryKey
    if ($registryValue -eq $expectedValue) {
        Write-Output "PASS"
        exit 0
    }
}
Write-Output "FAIL"
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\Mozilla\Firefox
Policy Name: Disable Telemetry
Policy State: Enabled

macOS "plist" file:
Add the following:
<key>DisableTelemetry</key>
<true/>

Linux "policies.json" file:
Add the following in the policies section:
"DisableTelemetry": true