The Exchange local machine policy must require signed scripts.

From MS Exchange 2013 Edge Transport Server Security Technical Implementation Guide

Associated with: CCI-001749

SV-84433r1_rule The Exchange local machine policy must require signed scripts.

Vulnerability discussion

Scripts, especially those downloaded from untrusted locations, often provide a way for attackers to infiltrate a system. By setting machine policy to prevent unauthorized script executions, unanticipated system impacts can be avoided.

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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