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AUSCERT External Security Bulletin Redistribution
ESB-2022.3930.2
Advisory (icsa-22-221-01) Mitsubishi Electric Multiple
Factory Automation Products
3 February 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: Mitsubishi Electric Multiple Factory Automation Products
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2022-1292 CVE-2022-0778
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-22-221-01
Comment: CVSS (Max): 9.8 CVE-2022-1292 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: ICS-CERT
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Revision History: February 3 2023: Vendor updated the advisory
August 10 2022: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
ICS Advisory (ICSA-22-221-01)
Mitsubishi Electric Multiple Factory Automation Products (Update D)
Original release date: February 02, 2023
Legal Notice
All information products included in https://us-cert.cisa.gov/ics are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For more
information about TLP, see https://us-cert.cisa.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 9.8
o ATTENTION: Exploitable remotely/low attack complexity
o Vendor: Mitsubishi Electric
o Equipment: GOT2000 compatible HMI software, CC-Link IE TSN Industrial
Managed Switch, MELSEC iQ-R Series OPC UA Server Module
o Vulnerabilities: Infinite Loop, OS Command Injection
2. UPDATE INFORMATION
This updated advisory is a follow-up to the advisory update titled
ICSA-22-221-01 Mitsubishi Electric Multiple Factory Automation Products (Update
C) that was published November 01, 2022, to the ICS webpage on cisa.gov/ics.
3. RISK EVALUATION
Successful exploitation of these vulnerabilities could create a
denial-of-service condition or enable arbitrary code execution.
4. TECHNICAL DETAILS
4.1 AFFECTED PRODUCTS
The following version of GT SoftGOT2000 is affected:
o GOT2000 compatible HMI software (GT SoftGOT2000): Version 1.275M
o CC-Link IE TSN Industrial Managed Switch (NZ2MHG-TSNT8F2, NZ2MHG-TSNT4):
Version 03 and prior [affected by CVE-2022-0778 only]
o MELSEC iQ-R Series OPC UA Server Module (RD81OPC96): Version 08 and prior
[affected by CVE-2022-0778 only]
4.2 VULNERABILITY OVERVIEW
4.2.1 LOOP WITH UNREACHABLE EXIT CONDITION ('INFINITE LOOP') CWE-835
A vulnerability in OpenSSL creates the potential for an infinite loop in the
affected product, which could lead to a denial-of-service condition.
CVE-2022-0778 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/C:N/
I:N/A:H ).
4.2.2 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN OS COMMAND ('OS
COMMAND INJECTION') CWE-78
A vulnerability in OpenSSL creates the potential for OS command injection in
the affected product, which could lead to arbitrary code execution.
CVE-2022-1292 has been assigned to this vulnerability. A CVSS v3 base score of
9.8 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/C:H/
I:H/A:H ).
4.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Japan
4.4 RESEARCHER
Mitsubishi Electric reported these vulnerabilities to CISA.
5. MITIGATIONS
Mitsubishi Electric recommends the following mitigations for the affected
products:
o GOT2000 compatible HMI software: Mitsubishi Electric has released a patch
for these issues and recommends users update affected products to Version
1.280S or later. Users should contact Mitsubishi Electric to obtain the
patch.
o CC-Link IE TSN Industrial Managed Switch: Mitsubishi Electric has released
fixed firmware for these issues and recommends users update affected
products to Version 04 or later. Users should contact Mitsubishi Electric
to obtain the fixed firmware version.
To update affected CC-Link IE TSN Industrial Managed Switch products,
log into the product with the web interface and go to [System] ->
[System Management] -> [Firmware Upgrade] from the Function menu after
obtaining the updated firmware file.
o CC-Link IE TSN Industrial Managed Switch: Mitsubishi Electric recommends
users to log into NZ2MHG-TSNT8F2 or NZ2MHG-TSNT4 with the web interface and
change the username and password from their default setting in [Account
Management] on the function menu. They are also recommended to set proper
access permissions for different users.
- --------- Begin Update D part 1 of 1 ---------
o MELSEC iQ-R Series OPC UA Server Module: Mitsubishi Electric has released
the fixed firmware for these issues and recommends users update affected
products to Version 09 or later. Users should contact Mitsubishi Electric
to obtain the fixed firmware version. Mitsubishi Electric recommends users
ensure the OPC UA Client is updated to the latest version and to use
legitimate certificates on the OPC UA Client side.
To update the firmware of the affected device, use an SD card and refer
to the "MELSEC iQ-R Module Configuration Manual (SH-081262ENG)".
- --------- End Update D part 1 of 1 ---------
For instructions on how to check the product version and more information
regarding contacting Mitsubishi Electric, refer to Mitsubishi Electric's
security advisory .
Mitsubishi Electric recommends users take the following precautions to minimize
the risk of these vulnerabilities being exploited:
o When internet access is required, use a virtual private network (VPN) to
prevent unauthorized access.
o Use the products within a LAN and block access from untrusted networks and
hosts.
o For GOT2000 compatible HMI software: Update the OPC UA server to the latest
version available.
o For GOT2000 compatible HMI software: Install antivirus software on
computers running the affected software.
o Restrict physical access to computers running the affected software.
CISA reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices
on the ICS webpage at cisa.gov/ics . Several CISA products detailing cyber
defense best practices are available for reading and download, including
Improving Industrial Control Systems Cybersecurity with Defense-in-Depth
Strategies .
Additional mitigation guidance and recommended practices are publicly available
on the ICS webpage at cisa.gov/ics in the technical information paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .
Organizations observing suspected malicious activity should follow established
internal procedures and report findings to CISA for tracking and correlation
against other incidents.
No known public exploits specifically target these vulnerabilities.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
CISA continuously strives to improve its products and services. You can help by
choosing one of the links below to provide feedback about this product.
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