Mozilla Firefox Security Technical Implementation Guide

Overview

Version	Date	Finding Count (25)			Downloads
4	2018-09-17 2011-05-21 2012-09-05 2012-09-05 2013-04-08 2013-07-03 2013-07-03 2014-01-08 2014-03-21 2014-07-03 2015-03-26 2015-06-30 2015-12-30 2015-12-30 2016-06-28 2016-06-28 2017-01-06 2017-03-22 2017-06-13 2017-12-21 2018-04-02 2019-01-02 2019-03-20 2019-09-23 2019-12-12 2020-06-19 2020-06-19 2020-12-10 2020-12-10 2021-06-09 2021-12-01 2022-09-09 2022-09-09 2022-09-09 2022-09-09 2023-06-05 2023-06-05 2023-06-05 2023-06-05 2023-06-05	CAT I (High): 1	CAT II (Med): 24	CAT III (Low): 0	Excel	JSON	XML

STIG Description
The Mozilla Firefox Security Technical Implementation Guide (STIG) is published as a tool to improve the security of Department of Defense (DoD) information systems. Comments or proposed revisions to this document should be sent via e-mail to the following address: disa.stig_spt@mail.mil

Available Profiles

Classified	Public	Sensitive
I - Mission Critical Classified	I - Mission Critical Public	I - Mission Critical Sensitive	II - Mission Support Classified	II - Mission Support Public	II - Mission Support Sensitive	III - Administrative Classified	III - Administrative Public	III - Administrative Sensitive

Findings (MAC I - Mission Critical Classified)

Finding ID	Severity	Title	Description
V-17988	High	Installed version of Firefox unsupported.	Use of versions of an application which are not supported by the vendor are not permitted. Vendors respond to security flaws with updates and patches. These updates are not available for...
V-15776	Medium	FireFox is configured to use a password store with or without a master password.	Firefox can be set to store passwords for sites visited by the user. These individual passwords are stored in a file and can be protected by a master password. Autofill of the password can then...
V-15774	Medium	Firefox formfill assistance option is disabled.	In order to protect privacy and sensitive data, Firefox provides the ability to configure Firefox such that data entered into forms is not saved. This mitigates the risk of a website gleaning...
V-15775	Medium	Firefox is configured to autofill passwords.	While on the internet, it may be possible for an attacker to view the saved password files and gain access to the user's accounts on various hosts.
V-19743	Medium	Firefox required security preferences cannot be changed by user.	Locked settings prevent users from accessing about:config and changing the security settings set by the system administrator. Locked settings should be placed in the mozilla.cfg file. The...
V-19742	Medium	Firefox automatically updates installed add-ons and plugins.	Set this to false to disable checking for updated versions of the Extensions/Themes. Automatic updates from untrusted sites puts the enclave at risk of attack and may override security settings.
V-19741	Medium	Firefox application is set to auto-update.	Allowing software updates from non-trusted sites can introduce settings that will override a secured installation of the application. This can place DoD information at risk. If this setting is...
V-19744	Medium	Firefox automatically checks for updated version of installed Search plugins.	Updates need to be controlled and installed from authorized and trusted servers. This setting overrides a number of other settings which may direct the application to access external URLs.
V-15768	Medium	FireFox is configured to ask which certificate to present to a web site when a certificate is required.	When a web site asks for a certificate for user authentication, Firefox must be configured to have the user choose which certificate to present. Websites within DOD require user authentication for...
V-15770	Medium	Firefox automatically executes or downloads MIME types which are not authorized for auto-download.	The default action for file types for which a plugin is installed is to automatically download and execute the file using the associated plugin. Firefox allows you to change the specified download...
V-79053	Medium	Background submission of information to Mozilla must be disabled.	There should be no background submission of technical and other information from DoD computers to Mozilla with portions posted publically.
V-6318	Medium	The DOD Root Certificate is not installed.	The DOD root certificate will ensure that the trust chain is established for server certificate issued from the DOD CA.
V-64891	Medium	Extensions install must be disabled.	A browser extension is a program that has been installed into the browser which adds functionality to it. Where a plug-in interacts only with a web page and usually a third party external...
V-15985	Medium	Firefox is configured to allow JavaScript to raise or lower windows.	JavaScript can make changes to the browser’s appearance. Allowing a website to use JavaScript to raise and lower browser windows may disguise an attack. Browser windows may not be set as active...
V-15777	Medium	History retention must be enabled.	This setting specifies the number of days that Firefox keeps track of the pages viewed in the History List. If you enable this policy setting, a user cannot set the number of days that Firefox...
V-15987	Medium	Firefox is configured to allow JavaScript to hide or change the status bar.	When a user visits some webpages, JavaScript can hide or make changes to the browser’s appearance to hide unauthorized activity. This activity can help disguise an attack taking place in a...
V-15986	Medium	Firefox is configured to allow JavaScript to disable or replace context menus.	A context menu (also known as a pop-up menu) is often used in a graphical user interface (GUI) and appears upon user interaction (e.g., a right mouse click). A context menu offers a limited set of...
V-15772	Medium	Firefox not configured to prompt user before download and opening for required file types.	New file types cannot be added directly to the helper applications or plugins listing. Files with these extensions will not be allowed to use Firefox publicly available plugins and extensions to...
V-15773	Medium	FireFox plug-in for ActiveX controls is installed.	When an ActiveX control is referenced in an HTML document, MS Windows checks to see if the control already resides on the client machine. If not, the control can be downloaded from a remote web...
V-15983	Medium	Firefox must be configured to allow only TLS.	Use of versions prior to TLS 1.1 are not permitted. SSL 2.0 and SSL 3.0 contain a number of security flaws. These versions must be disabled in compliance with the Network Infrastructure and Secure...
V-15771	Medium	Network shell protocol is enabled in FireFox.	Although current versions of Firefox have this set to disabled by default, use of this option can be harmful. This would allow the browser to access the Windows shell. This could allow access to...
V-15989	Medium	Firefox is not configured to provide warnings when a user switches from a secure (SSL-enabled) to a non-secure page.	Users may not be aware that the information being viewed under secure conditions in a previous page are not currently being viewed under the same security settings.
V-15988	Medium	Firefox is configured to allow JavaScript to change the status bar text.	JavaScript can make changes to the browser’s appearance. This activity can help disguise an attack taking place in a minimized background window. Webpage authors can disable many features of a...
V-15778	Medium	FireFox is not configured to block pop-up windows.	Popup windows may be used to launch an attack within a new browser window with altered settings. This setting blocks popup windows created while the page is loading.
V-15779	Medium	FireFox is configured to allow JavaScript to move or resize windows.	JavaScript can make changes to the browser’s appearance. This activity can help disguise an attack taking place in a minimized background window. Set browser setting to prevent scripts on visited...