[Control Systems] PHOENIX CONTACT mGuard Security Update

Number: AV18-023
Date: 31 January 2018


The purpose of this advisory is to bring attention to a PHOENIX CONTACT security update for mGuard.


PHOENIX CONTACT released a security updates for mGuard to address an improper validation of integrity check value. Successful exploitation of this vulnerability could allow for a malicious actor to modify firmware update packages.

Affected products:

- mGuard firmware versions 7.2 to 8.6.0

CVE Reference: CVE-2018-5441

Suggested action

CCIRC recommends that system administrators test and deploy the vendor-released updates to affected applications accordingly. For more information, please refer to the ICS-CERT references.



Note to Readers

In support of Public Safety's mission to build a safe and resilient Canada, CCIRC's mandate is to help ensure the security and resilience of the vital non-federal government cyber systems that underpin Canada's national security, public safety and economic prosperity. As Canada's computer security incident response team, CCIRC is Canada's national coordination centre for the prevention and mitigation of, preparedness for, response to, and recovery from cyber incidents on non-federal government systems. It does this by providing authoritative advice and support, and coordinating information sharing and incident response.

Please note, CCIRC PGP key has recently been updated.

For general information, please contact Public Safety Canada's Public Affairs division at:

Telephone: 613-944-4875 or 1-800-830-3118
Fax: 613-998-9589
E-mail: ps.communications-communications.sp@canada.ca

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