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EDGE-00-000041 Extensions installation must be blocklisted by default.

DISA STIG library V2R5
All changes in this version
first version loaded CAT II

Maps to CM-7 via CCI-000381

Title

Extensions installation must be blocklisted by default.

Control

The policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Extensions/Control which extensions cannot be installed" must be set to "Enabled". Use the Windows Registry Editor to navigate to the following key: HKLM\SOFTWARE\Policies\Microsoft\Edge\ExtensionInstallBlocklist\1 If the value for "1" is not set to "REG_SZ = *", this is a finding.

Discussion

List specific extensions that users cannot install in Microsoft Edge. When this policy is deployed, any extensions on this list that were previously installed will be disabled, and the user will not be able to enable them. If an item is removed from the list of blocked extensions, the extension is automatically reenabled anywhere it was previously installed. Use "*" to block all extensions that are not explicitly listed in the allow list. If this policy is not configured, users can install any extension in Microsoft Edge.

Related controls

CCI-000381

Fix

Set the policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Extensions/Control which extensions cannot be installed" to "Enabled". A list of blocklisted extensions may then be specified.