Details

In Outlook, folders can be associated with custom forms or folder home pages that include scripts that access the Outlook object model. These scripts can add functionality to the folders and items contained within, but dangerous scripts can pose security risks.

By default, Outlook does not allow scripts included in custom forms or folder home pages for shared folders to execute. If this configuration is changed, users can inadvertently run dangerous scripts when using shared folders, which can put their computers or data at risk.

Solution

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Outlook Options -> Other -> Advanced ‘Do not allow Outlook object model scripts to run for shared folders’ to ‘Enabled’.

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-53899r1_rule
• STIG-ID|DTOO232
• Vuln-ID|V-17676

Source

• Tenable.com/audits