Title

User Entries to Server List must be disallowed. (Cat II impact)

Discussion

If users are able to manually enter the addresses of servers that are not approved by the organization, they could use servers that do not meet your organization's information security requirements, which could cause sensitive information to be at risk. By default, when users create a meeting workspace, they can choose a server from a default list provided by administrators or manually enter the address of a server that is not listed.

Check Content

Verify the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Meeting Workspace "Disable user entries to server list" is set to "Enabled (Publish default, disallow others)". Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\15.0\meetings\profile Criteria: If the value ServerUI is REG_DWORD = 2, this is not a finding.

Fix Text

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2013 -> Meeting Workspace "Disable user entries to server list" to "Enabled (Publish default, disallow others)".

Additional Identifiers

Rule ID: SV-54059r1_rule

Vulnerability ID: V-17944

Group Title: DTOO286 - Disable User Entries to Server list

Expert Comments

CCIs tied to check.

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