Title

Unneeded Active Sync E-mail Web Virtual Directory is not removed. (Cat III impact)

Discussion

To reduce the vectors through which a server can be attacked, unneeded application components should be disabled or removed. By default, a virtual directory is installed for Active Sync, and the Exchange application default has Active Sync disabled. If an attacker were to intrude into an Exchange Front-End server and reactivate Active Sync, this attack vector could once again be open, provided the virtual directory were present. Once removed, the Active Sync functionality cannot be used without restoring the virtual directory, not a trivial process.

Check Content

Verify that ActiveSync Virtual Directory is removed. Procedure: IIS Manager >> [server name]>>Web Sites >> Default Web Site Identify the Microsoft Server-Active Sync virtual directory. Criteria: If the Active Sync virtual directory is deleted, this is not a finding.

Fix Text

Delete the Active Sync virtual directory. Procedure: IIS Manager >> [server name]>>Web Sites >> Default Web Site Identify and delete the Microsoft Server-Active Sync virtual directory.

Additional Identifiers

Rule ID: SV-20304r1_rule

Vulnerability ID: V-18682

Group Title:

Expert Comments

CCIs tied to check.

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