DTOO134 - Excel - Disable settings for content and add-ins that 'Allow trusted locations not on computer' that bypass security checks.

Information

By default, files located in trusted locations and specified in the Trust Center are assumed to be safe. Content, code, and add-ins are allowed to load from trusted locations with minimal security and without prompting the user for permission.
By default, users can specify trusted locations on network shares or in other remote locations that are not under their direct control by selecting the Allow Trusted Locations on my network (not recommended) check box in the Trusted Locations section of the Trust Center. If a dangerous file is opened from a trusted location, it will not be subject to typical security measures and could affect users' computers or data.

Solution

The policy value for User Configuration -> Administrative Templates -> Microsoft Office Excel 2007 -> Excel Options -> Security -> Trust Center -> Trusted Locations
'Allow Trusted Locations not on the computer' will be set to 'Disabled'.

See Also

http://iase.disa.mil/stigs/app_security/office_auto/u_microsoft_office2007_v4r9_stig_20121026.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6, CAT|II, Rule-ID|SV-18598r2_rule, STIG-ID|DTOO134, Vuln-ID|V-17520

Plugin: Windows

Control ID: afe7e97da65fc3e437b20ecb221be18eaa5c834135361ef0c38654eb50001dbb