Details

Malicious code can be included within Outlook forms, and such code could be executed when users open the form. By default, Outlook does not run scripts in forms in which the script and the layout are contained within the message.

Solution

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Security -> Security Form Settings -> Custom Form Security ‘Allow scripts in one-off Outlook forms’ to ‘Disabled’.

Supportive Information

The following resource is also helpful.

• https://iasecontent.disa.mil/stigs/zip/U_MS_Outlook_2013_V1R13_STIG.zip

This security hardening control applies to the following category of controls within NIST 800-53: System and Communications Protection.This control applies to the following type of system Windows.

References

• 800-53|SC-18(4)
• CAT|II
• CCI|CCI-001170
• Rule-ID|SV-53993r1_rule
• STIG-ID|DTOO246
• Vuln-ID|V-17562

Source

• Tenable.com/audits