Extensions that are approved for use must be allowlisted if used.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-235755 | EDGE-00-000042 | SV-235755r961479_rule | Low |
| Description |
| By default, all extensions are allowed. However, if all extensions are blocked by setting the "ExtensionInstallBlockList" policy to "*," users can only install extensions defined in this policy. |
| STIG | Date |
| Microsoft Edge Security Technical Implementation Guide | 2024-09-13 |
Details
| Check Text (C-38974r862953_chk) |
| This requirement for "Allow specific extensions to be installed" is not required; this is optional. The policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Extensions/Allow specific extensions to be installed" must be set to "Enabled". Use the Windows Registry Editor to navigate to the following key: HKLM\SOFTWARE\Policies\Microsoft\Edge "ExtensionInstallAllowlist" must be set as follows: HKLM\SOFTWARE\Policies\Microsoft\Edge\ExtensionInstallAllowlist\1 = "extension_id1" HKLM\SOFTWARE\Policies\Microsoft\Edge\ExtensionInstallAllowlist\2 = "extension_id2" If configured, the list of extensions for which Microsoft Edge allows to be installed may be allowlisted. |
| Fix Text (F-38937r766862_fix) |
| Set the policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Extensions/Allow specific extensions to be installed" to "Enabled". A list of allowlisted extensions may then be specified. |