Title

Outlook Security Mode must be configured to use Group Policy settings. (Cat II impact)

Discussion

If users can configure security themselves, they might choose levels of security that leave their computers vulnerable to attack. By default, Outlook users can configure security for themselves, and Outlook ignores any security-related settings that are configured in Group Policy.

Check Content

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Outlook 2013 >> Security >> Security Form Settings "Outlook Security Mode" is "Enabled (Use Outlook Security Group Policy)". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\outlook\security Criteria: If the value AdminSecurityMode is REG_DWORD = 3, this is not a finding.

Fix Text

Set the policy value for User Configuration >> Administrative Templates >> Microsoft Outlook 2013 >> Security >> Security Form Settings "Outlook Security Mode" to "Enabled (Use Outlook Security Group Policy)".

Additional Identifiers

Rule ID: SV-53934r2_rule

Vulnerability ID: V-17760

Group Title: DTOO239 - Outlook Security Mode

Expert Comments

CCIs tied to check.

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