Title

Enable the feature to suppress external Signature Services Menu for Office. (Cat II impact)

Discussion

By default, users can select Add Signature Services (from the Signature Line drop-down menu on the Insert tab of the Ribbon in Excel 2007, PowerPoint 2007, and Word 2007) to see a list of signature service providers on the Microsoft Office Web site. If your organization has policies that govern the use of external resources such as signature providers or Office Marketplace, allowing users to access the Add Signature Services menu item might enable them to violate those policies.

Check Content

The policy value for User Configuration -> Administrative Templates -> Microsoft Office 2007 system -> Signing “Suppress external signature services menu item” will be set to “Enabled”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\12.0\Common\Signatures Criteria: If the value SuppressExtSigningSvcs is REG_DWORD = 1, this is not a finding.

Fix Text

The policy value for User Configuration -> Administrative Templates -> Microsoft Office 2007 system -> Signing “Suppress external signature services menu item” will be set to “Enabled”. "Note: Group Policy Administrative Templates are available from the www.microsoft.com download site. The MS Office 2007 System (Office12.adm) is included in the AdminTemplates.exe file. This template provides the mechanisms to incorporate Microsoft Office 2007 System policies via the Microsoft Group Policy Editor (gpedit.msc)." "Note: If the Microsoft Group Policy Editor (gpedit.msc) is not used to incorporate the remediation to this vulnerability the Microsoft Registry Editor (regedit.exe) may be used to create the registry key and value required."

Additional Identifiers

Rule ID: SV-19036r1_rule

Vulnerability ID: V-17805

Group Title:

Expert Comments

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