Details

Autoplay allows the user to control whether videos can play automatically (without user consent) with audio content. The user must be able to select content that is run within the browser window.

Solution

Windows group policy:
1. Open the group policy editor tool with ‘gpedit.msc’.
2. Navigate to Policy Path: Computer ConfigurationAdministrative TemplatesMozillaFirefoxPermissionsAutoplay
Policy Name: Default autoplay level
Policy State: Enabled
Policy Value: Block Audio and Video

macOS ‘plist’ file:
Add the following:
Permissions

Autoplay

block-audio-video

Linux ‘policies.json’ file:
Add the following in the policies section:
‘Permissions’: {
‘Autoplay’: {
‘Default’: ‘block-audio-video’
}
}

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|III
• CCI|CCI-000381
• Rule-ID|SV-251565r807167_rule
• STIG-ID|FFOX-00-000021
• Vuln-ID|V-251565

Source

• Tenable.com/audits