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             AUSCERT External Security Bulletin Redistribution

                              ESB-2020.2624.2
           Multiple Mitsubishi Electric Factory vulnerabilities
                              6 November 2020

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Mitsubishi Electric Factory Automation Engineering Products
                   Mitsubishi Electric Factory Automation Products
                   Mitsubishi Electric Multiple Factory Automation Engineering Products
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Modify Arbitrary Files          -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
                   Access Confidential Data        -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-14523 CVE-2020-14521 CVE-2020-14496

Original Bulletin: 
   https://us-cert.cisa.gov/ics/advisories/icsa-20-212-02
   https://us-cert.cisa.gov/ics/advisories/icsa-20-212-03
   https://us-cert.cisa.gov/ics/advisories/icsa-20-212-04

Revision History:  November  6 2020: ICS-CERT appended Update A to advisory
                   July     31 2020: Initial Release

- --------------------------BEGIN INCLUDED TEXT--------------------

ICS Advisory (ICSA-20-212-04)

Mitsubishi Electric Factory Automation Engineering Products (Update A)

Original release date: November 05, 2020

Legal Notice

All information products included in https://us-cert.cisa.gov/ics are
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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 8.3
  o ATTENTION: Low skill level to exploit
  o Vendor: Mitsubishi Electric
  o Equipment: Mitsubishi Electric, Factory Automation Engineering products
  o Vulnerability: Unquoted Search Path or Element

2. UPDATE INFORMATION

This updated advisory is a follow-up to the original advisory titled
ICSA-20-212-04 Mitsubishi Electric Factory Automation Engineering Products that
was published July 30, 2020, to the ICS webpage to us-cert.cisa.gov.

3. RISK EVALUATION

Successful exploitation of this vulnerability may allow an attacker to obtain
unauthorized information, modify information, and cause a denial-of-service
condition.

4. TECHNICAL DETAILS

4.1 AFFECTED PRODUCTS

The following products and versions are affected:

  o C Controller Interface Module Utility, all versions
  o C Controller Module Setting and Monitoring Tool, all versions
  o CC-Link IE Control Network Data Collector, all versions
  o CC-Link IE Field Network Data Collector, all versions
  o CPU Module Logging Configuration Tool, Versions 1.100E and prior
  o CW Configurator, Versions 1.010L and prior

- --------- Begin Update A Part 1 of 4 ---------

  o Data Transfer, Versions 3.42U and prior

- --------- End Update A Part 1 of 4 ---------

  o EZSocket, all versions
  o FR Configurator SW3, all versions
  o FR Configurator2, all versions
  o GT Designer2 Classic, all versions

- --------- Begin Update A Part 2 of 4 ---------

  o GT Designer3 Version1 (GOT1000), Versions 1.241B and prior
  o GT Designer3 Version1 (GOT2000), Versions 1.241B and prior
  o GT SoftGOT1000 Version3, Versions 3.200J and prior
  o GT SoftGOT2000 Version1, Versions 1.241B and prior

- --------- End Update A Part 2 of 4 ---------

  o GX Developer, Versions 8.504A and prior
  o GX LogViewer, Versions 1.100E and prior
  o GX Works2, all versions
  o GX Works3, Versions 1.063R and prior
  o M_CommDTM-IO-Link, all versions
  o MELFA-Works, all versions
  o MELSEC WinCPU Setting Utility, all versions
  o MELSOFT Complete Clean Up Tool, all versions
  o MELSOFT EM Software Development Kit, all versions
  o MELSOFT iQ AppPortal, all versions
  o MELSOFT Navigator, all versions
  o MI Configurator, all versions
  o Motion Control Setting, Versions 1.005F and prior
  o Motorizer, Versions 1.005F and prior
  o MR Configurator2, all versions
  o MT Works2, all versions
  o MTConnect Data Collector, all versions
  o MX Component, all versions

- --------- Begin Update A Part 3 of 4 ---------

  o MX MESInterface, Versions 1.21X and prior
  o MX MESInterface-R, Versions 1.12N and prior

- --------- End Update A Part 3 of 4 ---------

  o MX Sheet, all versions
  o Network Interface Board CC IE Control Utility, all versions
  o Network Interface Board CC IE Field Utility, all versions
  o Network Interface Board CC-Link Ver.2 Utility, all versions
  o Network Interface Board MNETH Utility, all versions
  o Position Board utility 2, all versions
  o PX Developer, all versions
  o RT ToolBox2, all versions
  o RT ToolBox3, all versions
  o Setting/monitoring tools for the C Controller module, all versions
  o SLMP Data Collector, all versions

4.2 VULNERABILITY OVERVIEW

4.2.1 UNQUOTED SEARCH PATH OR ELEMENT CWE-428

Multiple Mitsubishi Electric Factory Automation engineering software products
have a malicious code execution vulnerability. A malicious attacker could use
this vulnerability to obtain information, modify information, and cause a
denial-of-service condition.

CVE-2020-14521 has been assigned to this vulnerability. A CVSS v3 base score of
8.3 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:R/S:C/
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

Mashav Sapir of Claroty reported this vulnerability to CISA.

5. MITIGATIONS

Mitsubishi Electric recommends the following mitigations:

- --------- Begin Update A Part 4 of 4 ---------

Please refer to the Mitsubishi Electric website for details on available
patches.

Download the latest version of each software product and update it.

- --------- End Update A Part 4 of 4 ---------

Refer to the manual for help to update affected products.

For users of a product that has not released a fixed version or who cannot
immediately update the product, Mitsubishi Electric recommends taking the
following mitigation measures to minimize risk:

  o If a "File Name Warning" message is displayed when starting Windows, take
    appropriate measures according to the instructions in the message (such as
    changing a file name) and then install or operate the products.
  o Operate the products under an account that does not have administrator
    privileges.
  o Install an antivirus software in computers using the products.
  o Restrict network exposure for all control system devices or systems to the
    minimum necessary and ensure they are not accessible from untrusted
    networks and hosts.
  o Locate control system networks and remote devices behind firewalls and
    isolate them from the network.
  o Use virtual private network (VPN) when remote access is required.

Additional information about the vulnerabilities or Mitsubishi Electric's
compensating control is available by contacting a Mitsubishi Electric
representative .

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 on us-cert.cisa.gov . Several recommended 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 on us-cert.cisa.gov in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .

Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to CISA for tracking
and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves
from social engineering attacks:

  o Do not click web links or open unsolicited attachments in email messages.
  o Refer to Recognizing and Avoiding Email Scams for more information on
    avoiding email scams.
  o Refer to Avoiding Social Engineering and Phishing Attacks for more
    information on social engineering attacks.

No known public exploits specifically target this vulnerability.

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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