Firefox must be configured to not automatically check for updated versions of installed search plugins.

An XCCDF Rule

Description

<VulnDiscussion>Updates must be controlled and installed from authorized and trusted servers. This setting overrides a number of other settings that may direct the application to access external URLs.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>

ID: SV-251548r879587_rule
Severity: Medium
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\
Policy Name: Preferences
Policy State: Enabled
Policy Value:{
  "browser.search.update": {
    "Value": false,
    "Status": "locked"
  }
}

macOS "plist" file:
Add the following:
<key>Preferences</key>
<dict>
  <key>browser.search.update</key>
  <dict>
    <key>Value</key>
    <false/>
    <key>Status</key>
    <string>locked</string>
  </dict>
</dict>

Linux "policies.json" file:
Add the following in the policies section:
"Preferences": {
  "browser.search.update": {
    "Value": false,
    "Status": "locked"
  }
}

Firefox must be configured to not automatically check for updated versions of installed search plugins.

Description

Remediation - Manual Procedure