Title

Automatically download Internet Calendar appointment attachments. (Cat II impact)

Discussion

Files attached to Internet Calendar appointments could contain malicious code that could be used to compromise a computer. By default, Outlook 2007 does not download attachments when retrieving Internet Calendar appointments.

Check Content

The policy value for User Configuration -> Administrative Templates -> Microsoft Office Outlook 2007 -> Tools \ Account Settings -> Internet Calendars “Automatically download attachments” will be set to “Disabled”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\12.0\Outlook\Options\WebCal Criteria: If the value EnableAttachments is REG_DWORD = 0, this is not a finding.

Fix Text

The policy value for User Configuration -> Administrative Templates -> Microsoft Office Outlook 2007 -> Tools \ Account Settings -> Internet Calendars “Automatically download attachments” will be set to “Disabled”.

Additional Identifiers

Rule ID: SV-18918r1_rule

Vulnerability ID: V-17738

Group Title:

Expert Comments

CCIs tied to check.

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