Details

Scripts often provide a way for attackers to infiltrate a system, especially those 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.

Solution

Open the Exchange Management Shell and enter the following command:

Set-ExecutionPolicy RemoteSigned

Supportive Information

The following resource is also helpful.

• https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_Exchange_2013_Y21M01_STIG.zip

This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Windows.

References

• 800-53|CM-5(3)
• CAT|II
• CCI|CCI-001749
• Rule-ID|SV-84373r1_rule
• STIG-ID|EX13-CA-000090
• Vuln-ID|V-69751

Source

• Tenable.com/audits