Guide to the Secure Configuration of Firefox
Rules, Groups, and Values defined within the XCCDF Benchmark
-
Disable JavaScript's Moving Or Resizing Windows Capability
JavaScript can configure and make changes to the web browser's appearance by specifically moving and resizing browser windows. This can be disabled by setting <code>dom.disable_window_move_resize</...Rule Medium Severity -
Disable Firefox network prediction
Firefox has a feature where it predicts and caches DNS requests. This can be disabled by settingNetworkPrediction
totrue
in the policy file.Rule Medium Severity -
The Default Firefox Home Page
The default home page for Firefox users.Value -
Firefox must be configured to disable the installation of extensions.
Addon installation may be disabled in an administrative policy by setting theInstallAddonsPermission
key underpolicies
tofalse
.Rule Medium Severity -
Firefox autoplay must be disabled.
Audio/Video autoplay may be disabled in an administrative policy by setting theDefault
key underPermissions
,Autoplay
to"block-audio-video"
.Rule Medium Severity -
Ensure the Content Blocker uBlock Origin is Installed
The uBlock Origin will be installed automatically by configuring Firefox policy, and updates will be enabled. It can also be installed through the Mozilla Add-Ons store at https://addons.mozilla.or...Rule Medium Severity -
Enabled Firefox Cryptomining protection
Cryptomining protection may be enabled by settingprivacy.trackingprotection.cryptomining.enabled
totrue
.Rule Medium Severity -
Disable Firefox Development Tools
Firefox provides development tools which identify detailed information about the browser and its configuration. These details are often also recorded into a log file, giving an attacker the abili...Rule Low Severity -
Disable Firefox deprecated ciphers
Pocket may be disabled by settingTLS_RSA_WITH_3DES_EDE_CBC_SHA
totrue
underDisabledCiphers
in the policies file.Rule Medium Severity -
Firefox must be configured to disable form fill assistance.
The update check may be disabled in an administrative policy by setting theDisableFormHistory
key underpolicies
totrue
.Rule Medium Severity -
Disable Firefox Pocket
Pocket may be disabled by settingDisablePocket
totrue
in the policies file.Rule Medium Severity -
Disable Firefox Studies
Pocket may be disabled by settingDisableFirefoxStudies
totrue
in the policies file.Rule Medium Severity -
Firefox must be configured to not delete data upon shutdown.
The default certificate to present may be configured by setting multiple options underSanitizeOnShutdown
key.-
Cache
=false
Rule Medium Severity -
-
Firefox must be configured so that DNS over HTTPS is disabled.
DNS over HTTPS feature may be disabled via administrative policy by settingEnabled
underDNSOverHTTPS
tofalse
.Rule Medium Severity -
Enabled Firefox Enhanced Tracking Protection
Enhanced Tracking Protection may be enabled by settingbrowser.contentblocking.category
tostrict
.Rule Medium Severity -
Disabled Firefox Extension Recommendations
Extension recommendations may be disabled by settingextensions.htmlaboutaddons.recommendations.enabled
tofalse
in the policy file.Rule Medium Severity -
Firefox must be configured to not automatically update installed add-ons and plugins.
Firefox has a feature to permit installed add-ons and plugins to automatically update. The check may be disabled in an administrative policy by setting the <code>ExtensionUpdate</code> key under <c...Rule Medium Severity -
Firefox feedback reporting must be disabled.
Feedback reporting feature may be disabled via administrative policy by settingDisableFeedbackCommands
underpolicies
totrue
.Rule Medium Severity -
Enabled Firefox Fingerprinting Protection
Fingerprinting protection may be enabled by settingFingerprinting
totrue
underEnableTrackingProtection
in the policies file.Rule Medium Severity -
Firefox must prevent the user from quickly deleting data.
The update check may be disabled in an administrative policy by setting theDisableForgetButton
key underpolicies
totrue
.Rule Medium Severity
Node 2
The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.