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

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

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".

Additional Identifiers

Rule ID: SV-253478r829518_rule

Vulnerability ID: V-253478

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

Expert Comments

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