Exchange Local machine policy must require signed scripts.

From Microsoft Exchange 2016 Mailbox Server Security Technical Implementation Guide

Associated with: CCI-001749

SV-95365r1_rule Exchange Local machine policy must require signed scripts.

Vulnerability discussion

Scripts often provide a way for attackers to infiltrate a system, especially scripts downloaded from untrusted locations. By setting machine policy to prevent unauthorized script executions, unanticipated system impacts can be avoided. Failure to allow only signed remote scripts reduces the attack vector vulnerabilities from unsigned remote scripts.

Check content

Open the Exchange Management Shell and enter the following command: Get-ExecutionPolicy If the value returned is not "RemoteSigned", this is a finding.

Fix text

Open the Exchange Management Shell and enter the following command: Set-ExecutionPolicy RemoteSigned

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