Number: AV20-089
Date: 01 April 2020
On 31 March 2020 Mitsubishi Electric published a security bulletin highlighting vulnerabilities in all versions of the following MELSEC programmable controllers with the MELSOFT transmission port (UDP/IP):
• MELSEC iQ-R Series
• MELSEC iQ-F Series
• MELSEC-Q Series
• MELSEC-L Series
• MELSEC-F Series
An actor can send large amounts of data to the MELSOFT transmission port of an affected MELSEC product to cause a disruption in communication.
The Cyber Centre encourages users and administrators to review the following Mitsubishi Electric security bulletin for recommended mitigations.
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2019-005_en.pdf
Note to Readers
The Canadian Centre for Cyber Security (Cyber Centre) operates as part of the Communications Security Establishment. We are Canada’s national authority on cyber security and we lead the government’s response to cyber security events. As Canada's national computer security incident response team, the Cyber Centre works in close collaboration with government departments, critical infrastructure, Canadian businesses and international partners to prepare for, respond to, mitigate, and recover from cyber events. We do this by providing authoritative advice and support, and coordinating information sharing and incident response. The Cyber Centre is outward-facing, welcoming partnerships that help build a stronger, more resilient cyber space in Canada.