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Firefox must be configured to not automatically check for updated versions of installed search plugins.


Overview

Finding ID Version Rule ID IA Controls Severity
V-251548 FFOX-00-000004 SV-251548r807116_rule Medium
Description
Updates must be controlled and installed from authorized and trusted servers. This setting overrides a number of other settings that may direct the application to access external URLs.
STIG Date
Mozilla Firefox Security Technical Implementation Guide 2022-09-09

Details

Check Text ( C-54983r807114_chk )
Type "about:policies" in the browser address bar.

If "browser.search.update" is not displayed with a value of "false", this is a finding.
Fix Text (F-54937r807115_fix)
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: Preferences
Policy State: Enabled
Policy Value:
{
"browser.search.update": {
"Value": false,
"Status": "locked"
}
}

macOS "plist" file:
Add the following:
Preferences

browser.search.update

Value

Status
locked



Linux "policies.json" file:
Add the following in the policies section:
"Preferences": {
"browser.search.update": {
"Value": false,
"Status": "locked"
}
}