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Extensions that are approved for use must be allowlisted.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-235755 | EDGE-00-000042 | SV-235755r626523_rule | Medium |
| 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 | 2021-02-16 |
Details
| Check Text ( C-38974r626461_chk ) |
|---|
| 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 the value for "ExtensionInstallAllowlist" is not set, this is a finding. If no extensions in the agency require whitelisting for use, this is Not Applicable. |
| Fix Text (F-38937r626462_fix) |
|---|
| Set the policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Extensions/Allow specific extensions to be installed" to "Enabled". A list of whitelisted extensions may then be specified. |