Details

The Recommended Extensions program recommends extensions to users as they surf the web.

The user must not be encouraged to install extensions from the websites they visit. Allowed extensions are to be centrally managed.

Solution

Windows group policy:
1. Open the group policy editor tool with ‘gpedit.msc’.
2. Navigate to Policy Path: Computer ConfigurationAdministrative TemplatesMozillaFirefoxUser Messaging
Policy Name: Extension Recommendations
Policy State: Disabled

macOS ‘plist’ file:
Add the following:
UserMessaging

ExtensionRecommendations

Linux ‘policies.json’ file:
Add the following in the policies section:
‘UserMessaging’: {
‘ExtensionRecommendations’: false
}

Supportive Information

The following resource is also helpful.

• https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MOZ_Firefox_V6R1_STIG.zip

This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Unix.

References

• 800-53|CM-7a.
• CAT|II
• CCI|CCI-000381
• Rule-ID|SV-251572r807188_rule
• STIG-ID|FFOX-00-000028
• Vuln-ID|V-251572

Source

• Tenable.com/audits