FireFox is configured to allow JavaScript to move or resize windows.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-15779 | DTBF181 | SV-16718r1_rule | Medium |
| Description |
|---|
| JavaScript can make changes to the browser’s appearance. This activity can help disguise an attack taking place in a minimized background window. Set browser setting to prevent scripts on visited websites from moving and resizing browser windows. |
| STIG | Date |
|---|---|
| Mozilla FireFox Security Technical Implementation Guide | 2020-06-19 |
Details
| Check Text ( C-16624r1_chk ) |
|---|
| In About:Config, verify that the preference name “dom.disable_window_move_resize" is set and locked to “true”. Criteria: If the parameter is set incorrectly, then this is a finding. If the setting is not locked, then this is a finding. |
| Fix Text (F-15996r1_fix) |
|---|
| Ensure the preference "dom.disable_window_move_resize" is set and locked to the value of “true”. |