Title

Object Model Prompt behavior for the SaveAs method must be configured. (Cat II impact)

Discussion

This policy setting controls what happens when an untrusted program attempts to use the Save As command to programmatically save an item. If you enable this policy setting, you can choose from four different options when an untrusted program attempts to use the Save As command to programmatically save an item:- Prompt user. The user will be prompted to approve every access attempt. - Automatically approve. Outlook will automatically grant programmatic access requests from any program. This option can create a significant vulnerability, and is not recommended. - Automatically deny. Outlook will automatically deny programmatic access requests from any program.- Prompt user based on computer security. Outlook will only prompt users when antivirus software is out of date or not running. This is the default configuration. If you disable or do not configure this policy setting, when an untrusted application attempts to use the Save As command, Outlook relies on the setting configured in the 'Programmatic Access' section of the Trust Center.

Check Content

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2016 -> Security -> Security Form Settings -> Programmatic Security "Configure Outlook object model prompt when executing Save As" is set to "Enabled (Automatically Deny)". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\16.0\outlook\security Criteria: If the value PromptOOMSaveAs is REG_DWORD = 0, this is not a finding.

Fix Text

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2016 -> Security -> Security Form Settings -> Programmatic Security "Configure Outlook object model prompt when executing Save As" to "Enabled (Automatically Deny)".

Additional Identifiers

Rule ID: SV-228449r508021_rule

Vulnerability ID: V-228449

Group Title: SRG-APP-000488

Expert Comments

CCIs tied to check.

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