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Firefox must be configured to block pop-up windows.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-251553 | FFOX-00-000009 | SV-251553r807131_rule | Medium |
| Description |
|---|
| Pop-up windows may be used to launch an attack within a new browser window with altered settings. This setting blocks pop-up windows created while the page is loading. |
| STIG | Date |
|---|---|
| Mozilla Firefox Security Technical Implementation Guide | 2021-12-01 |
Details
| Check Text ( C-54988r807129_chk ) |
|---|
| Type "about:policies" in the browser address bar. If "PopupBlocking" is not displayed under Policy Name or the Policy Value is not "Default" "true", this is a finding. |
| Fix Text (F-54942r807130_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\Popups Policy Name: Block pop-ups from websites Policy State: Enabled macOS "plist" file: Add the following: Linux "policies.json" file: Add the following in the policies section: "PopupBlocking": true |