Firefox network prediction must be disabled.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-251566 | FFOX-00-000022 | SV-251566r960963_rule | CCI-000381 | medium |
| Description | ||||
| If network prediction is enabled, requests to URLs are made without user consent. The browser should always make a direct DNS request without prefetching occurring. | ||||
| STIG | Date | |||
| Mozilla Firefox Security Technical Implementation Guide | 2025-02-11 | |||
Details
Check Text (C-251566r960963_chk)
Type "about:policies" in the browser window.
If "NetworkPrediction" is not displayed under Policy Name or the Policy Value is not "false", this is a finding.
Fix Text (F-54955r807169_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: Network Prediction
Policy State: Disabled
macOS "plist" file:
Add the following:
<key>NetworkPrediction</key>
<false/>
Linux "policies.json" file:
Add the following in the policies section:
"NetworkPrediction": false