Title

Zone information must be preserved when saving attachments. (Cat II impact)

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 Registry Path: \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".

Additional Identifiers

Rule ID: SV-225540r569185_rule

Vulnerability ID: V-225540

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.