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FFOX-00-000005 Firefox must be configured to not automatically update installed add-ons and plugins.

DISA STIG library V6R9
All changes in this version
first version loaded CAT II

Maps to CM-7 via CCI-000381

Title

Firefox must be configured to not automatically update installed add-ons and plugins.

Control

Type "about:policies" in the browser window. If "ExtensionUpdate" is not displayed under Policy Name or the Policy Value is not "false", this is a finding.

Discussion

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.

Related controls

CCI-000381

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\Extensions Policy Name: Extension Update Policy State: Disabled macOS "plist" file: Add the following: ExtensionUpdate Linux "policies.json" file: Add the following in the policies section: "ExtensionUpdate": false