STIGhubSTIGhub
STIGsRMF ControlsCompare
STIGhub— A free STIG search and compliance tool·STIGs updated 3 days ago
Powered by Pylon·Privacy·Terms·© 2026 Beacon Cloud Solutions, Inc.
← Back to Mozilla Firefox Security Technical Implementation Guide

V-251578

CAT II (Medium)

Firefox accounts must be disabled.

Rule ID

SV-251578r960963_rule

STIG

Mozilla Firefox Security Technical Implementation Guide

Version

V6R7

CCIs

CCI-000381

Discussion

Disable Firefox Accounts integration (Sync). It is detrimental for applications to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors. Applications are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions). Examples of non-essential capabilities include but are not limited to advertising software or browser plug-ins that are not related to requirements or provide a wide array of functionality not required for every mission but that cannot be disabled.

Check Content

Type "about:policies" in the browser address bar. 

If "DisableFirefoxAccounts" is not displayed under Policy Name or the Policy Value is not "true", this is a finding.

Fix Text

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 Firefox Accounts
Policy State: Enabled

macOS "plist" file:
<key>DisableFirefoxAccounts</key>
  <true/> 

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