Zone information must be preserved when saving attachments.

From Windows 8/8.1 Security Technical Implementation Guide

Part of Attachment Mgr - Preserve Zone Info

Associated with: CCI-000366

SV-48216r1_rule Zone information must be preserved when saving attachments.

Vulnerability discussion

Preserving zone of origin (internet, intranet, local, restricted) information on file attachments allows Windows to determine risk.

Check content

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_CURRENT_USER Subkey: \Software\Microsoft\Windows\CurrentVersion\Policies\Attachments\ Value Name: SaveZoneInformation Type: REG_DWORD Value: 2

Fix text

Configure the policy value for User Configuration -> Administrative Templates -> Windows Components -> Attachment Manager -> "Do not preserve zone information in file attachments" to "Disabled".

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