SV-223172r612236: Fingerprinting protection must be enabled. | Mozilla Firefox Security Technical Implementation Guide

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Assessment Title

Rule Text

Fingerprinting protection must be enabled.

Description

Discussion Text

The Content Blocking/Tracking Protection feature stops Firefox from loading content from malicious sites. The content might be a script or an image, for example. If a site is on one of the tracker lists you set Firefox to use, then the fingerprinting script (or other tracking script/image) will not be loaded from that site. Fingerprinting scripts collect information about your browser and device configuration, such as your operating system, screen resolution, and other settings. By compiling these pieces of data, fingerprinters create a unique profile of you that can be used to track you around the Web.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000381SV-111841V-102879

References

DPMS Target Mozilla Firefox DISA DPMS Target Mozilla Firefox 4097

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.

Assessment Script Powered by AISandbox-executed

A standalone Shell script to assess this control automatically. Review before running it in your environment.

Syntax-checked and actually executed in an isolated sandbox (not the real system this checks) — confirmed to run without errors.

#!/bin/sh
# OVAL definition: oval:mil.disa.stig.mozilla.firefox.rhel:def:330
if [ -z "$(firefox -v 2>&1 | grep -o 'Mozilla Firefox' | wc -l)" ] || [ ! -f "$HOME/.mozilla/firefox/profile/user.js" ]; then echo "PASS"; exit 0; fi
if [ ! -s "$HOME/.mozilla/firefox/profile/user.js" ] || ! grep -q "^// *$" "$HOME/.mozilla/firefox/profile/user.js"; then echo "FAIL"; exit 1; fi
if ! grep -q "pref\\(\"privacy.trackingprotection.fingerprinting.enabled\\\",\"true\"\\);" "$HOME/.mozilla/firefox/profile/user.js"; then echo "FAIL"; exit 1; fi
echo "PASS"; exit 0

Remediation

Ensure the preference “privacy.trackingprotection.fingerprinting.enabled" is set and locked to the value of “true”.