Title

The Exchange application directory must be protected from unauthorized access. (Cat II impact)

Discussion

Default product installations may provide more generous access permissions than are necessary to run the application. By examining and tailoring access permissions to more closely provide the least amount of privilege possible, attack vectors that align with user permissions are less likely to access more highly secured areas.

Check Content

Review the Email Domain Security Plan (EDSP). Determine the authorized groups and users that have access to the Exchange application directories. Determine if the access permissions on the directory match the access permissions listed in the EDSP. If any group or user has different access permissions than listed in the EDSP, this is a finding. Note: The default installation directory is \Program Files\Microsoft\Exchange Server\V15.

Fix Text

Update the EDSP to reflect the authorized groups and users that have access to the Exchange application directories. Navigate to the Exchange application directory and remove or modify the group or user access permissions. Note: The default installation directory is \Program Files\Microsoft\Exchange Server\V15.

Additional Identifiers

Rule ID: SV-221254r961455_rule

Vulnerability ID: V-221254

Group Title: SRG-APP-000378

Expert Comments

CCIs tied to check.

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