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Zone information must be preserved when saving attachments.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-253478 | WN11-UC-000020 | SV-253478r829518_rule | Medium |
| Description |
|---|
| Preserving zone of origin (internet, intranet, local, restricted) information on file attachments allows Windows to determine risk. |
| STIG | Date |
|---|---|
| Microsoft Windows 11 Security Technical Implementation Guide | 2024-02-27 |
Details
| Check Text ( C-56931r829516_chk ) |
|---|
| The default behavior is for Windows to mark file attachments with their zone information. If it exists and is configured with a value of "1", this is a finding. Registry Hive: HKEY_CURRENT_USER Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Attachments\ Value Name: SaveZoneInformation Value Type: REG_DWORD Value: 0x00000002 (2) (or if the Value Name does not exist) |
| Fix Text (F-56881r829517_fix) |
|---|
| The default behavior is for Windows to mark file attachments with their zone information. To correct this, configure the policy value for User Configuration >> Administrative Templates >> Windows Components >> Attachment Manager >> "Do not preserve zone information in file attachments" to "Not Configured" or "Disabled". |