Title

Configure Object Model Prompt behavior for programmatic access of user address data. (Cat II impact)

Discussion

If an untrusted application accesses the recipient fields, the application could gain access to sensitive data and potentially change that data. This could result in mail being sent to the wrong party. By default, when an untrusted application attempts to access recipient fields, Outlook 2007 relies on the setting configured in the "Programmatic Access" section of the Trust Center. This setting determines whether Outlook will warn users about programmatic access attempts: • Only when antivirus software is out of date or not running (the default setting) • Every time • Not at all If the "Not at all" option is selected, Outlook will silently grant programmatic access to any program that requests it, which could allow a malicious program to gain access to sensitive information. Note This described default functionality assumes that you have not followed the recommendation to enable the "Outlook Security Mode" Group Policy setting to ensure that Outlook security settings are configured by Group Policy. If Group Policy security settings are used for Outlook, the "Programmatic Access" section of the Trust Center is not used. In this situation, the default is to prompt users based on computer security, which is the equivalent of the "Only when antivirus software is out of date or not running" option in the Trust Center, and the user experience is not affected.

Check Content

The policy value for User Configuration -> Administrative Templates -> Microsoft Office Outlook 2007 -> Security -> Security Form Settings -> Programmatic Security “Configure Outlook object model prompt when reading address information” will be set to “Enabled (Automatically Deny)”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\12.0\Outlook\Security Criteria: If the value PromptOOMAddressInformationAccess is REG_DWORD = 0, this is not a finding.

Fix Text

The policy value for User Configuration -> Administrative Templates -> Microsoft Office Outlook 2007 -> Security -> Security Form Settings -> Programmatic Security “Configure Outlook object model prompt when reading address information” will be set to “Enabled (Automatically Deny)”.

Additional Identifiers

Rule ID: SV-18683r1_rule

Vulnerability ID: V-17572

Group Title:

Expert Comments

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