Exchange software must be monitored for unauthorized changes.

From MS Exchange 2013 Mailbox Server Security Technical Implementation Guide

Associated with: CCI-001814

SV-84693r1_rule Exchange software must be monitored for unauthorized changes.

Vulnerability discussion

Monitoring software files for changes against a baseline on a regular basis may help detect the possible introduction of malicious code on a system.

Check content

Review the Email Domain Security Plan (EDSP). Determine whether the site monitors system files (e.g., *.exe, *.bat, *.com, *.cmd, and *.dll) on servers for unauthorized changes against a baseline on a weekly basis. If software files are not monitored for unauthorized changes, this is a finding. Note: A properly configured HBSS Policy Auditor File Integrity Monitor (FIM) module will meet the requirement for file integrity checking. The Asset module within HBSS does not meet this requirement.

Fix text

Update the EDSP. Monitor the software files (e.g., *.exe, *.bat, *.com, *.cmd, and *.dll) on Exchange servers for unauthorized changes against a baseline on a weekly basis. Note: This can be done with the use of various monitoring tools.

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