Firefox autoplay must be disabled.

An XCCDF Rule

Description

<VulnDiscussion>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.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>

ID: SV-251565r879587_rule
Severity: Low
References: CCI-000381
Updated: about 1 year ago

Windows group policy:
1. Open the group policy editor tool with "gpedit.msc".
2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Mozilla\Firefox\Permissions\Autoplay
Policy Name: Default autoplay level
Policy State: Enabled
Policy Value: Block Audio and Video
macOS "plist" file:
Add the following:
<key>Permissions</key>
<dict>
  <key>Autoplay</key>
  <dict>
    <string>block-audio-video</string>
  </dict>
</dict>
 
Linux "policies.json" file:
Add the following in the policies section:
"Permissions": {
  "Autoplay": {
    "Default": "block-audio-video"
  }
}

Firefox autoplay must be disabled.

Description

Remediation - Manual Procedure