-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2022.6240
   Advisory (icsa-22-333-05) Mitsubishi Electric FA Engineering Software
                             30 November 2022

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

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

Product:           Mitsubishi Electric FA Engineering Software
Publisher:         ICS-CERT
Operating System:  Network Appliance
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-29833 CVE-2022-29832 CVE-2022-29831
                   CVE-2022-29830 CVE-2022-29829 CVE-2022-29828
                   CVE-2022-29827 CVE-2022-29826 CVE-2022-29825
                   CVE-2022-25164  

Original Bulletin: 
   https://us-cert.cisa.gov/ics/advisories/icsa-22-333-05

Comment: CVSS (Max):  9.1 CVE-2022-29830 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
         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:N

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

ICS Advisory (ICSA-22-333-05)

Mitsubishi Electric FA Engineering Software

Original release date: November 29, 2022

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 9.1
  o ATTENTION: Exploitable remotely/low attack complexity
  o Vendor: Mitsubishi Electric
  o Equipment: GX Works3, MX OPC UA Module Configurator-R
  o Vulnerabilities: Cleartext Storage of Sensitive Information, Use of
    Hard-coded Password, Insufficiently Protected Credentials, Use of
    Hard-coded Cryptographic Key, Cleartext Storage of Sensitive Information in
    Memory

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow unauthorized users
to gain access to the MELSEC iQ-R/F/L series CPU modules and the MELSEC iQ-R
series OPC UA server module or to view and execute programs.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Mitsubishi Electric FA Engineering Software are
affected:

  o GX Works3:
       1.000A or later and 1.011M and prior (affected by CVE-2022-25164,
        CVE-2022-29825, CVE-2022-29826, CVE-2022-29827, CVE-2022-29828,
        CVE-2022-29829, CVE-2022-29830)
       1.015R or later and 1.086Q and prior (affected by CVE-2022-25164,
        CVE-2022-29825, CVE-2022-29826, CVE-2022-29827, CVE-2022-29828,
        CVE-2022-29829, CVE-2022-29830, CVE-2022-29831, CVE-2022-29832,
        CVE-2022-29833)
       1.087R or later (affected by CVE-2022-25164, CVE-2022-29825,
        CVE-2022-29827, CVE-2022-29828, CVE-2022-29829, CVE-2022-29830,
        CVE-2022-29831, CVE-2022-29832, CVE-2022-29833)
  o MX OPC UA Module Configurator-R: All versions (affected by CVE-2022-25164)

3.2 VULNERABILITY OVERVIEW

3.2.1 CLEARTEXT STORAGE OF SENSITIVE INFORMATION CWE-312

If this vulnerability is exploited, sensitive information could be disclosed.
As a result, unauthorized users can gain access to the CPU module and the OPC
UA server module.

CVE-2022-25164 has been assigned to this vulnerability. A CVSS v3 base score of
8.6 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:C/
C:H/I:N/A:N ).

3.2.2 CLEARTEXT STORAGE OF SENSITIVE INFORMATION CWE-312

If this vulnerability is exploited, sensitive information could be disclosed.
As a result, unauthorized users could view or execute programs.

CVE-2022-29826 has been assigned to this vulnerability. A CVSS v3 base score of
6.8 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:C/
C:H/I:N/A:N ).

3.2.3 USE OF HARD-CODED PASSWORD CWE-259

If this vulnerability is exploited, sensitive information could be disclosed.
As a result, unauthorized users could view or execute programs.

CVE-2022-29825 has been assigned to this vulnerability. A CVSS v3 base score of
5.6 has been calculated; the CVSS vector string is ( AV:L/AC:H/PR:L/UI:N/S:C/
C:H/I:N/A:N ).

3.2.4 USE OF HARD-CODED PASSWORD CWE-259

If this vulnerability is exploited, unauthorized users could obtain information
about the safety CPU module project file.

CVE-2022-29831 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/
C:H/I:N/A:N ).

3.2.5 INSUFFICIENTLY PROTECTED CREDENTIALS CWE-522

If this vulnerability is exploited, sensitive information could be disclosed.
As a result, unauthorized users could access the safety CPU module.

CVE-2022-29833 has been assigned to this vulnerability. A CVSS v3 base score of
6.8 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:C/
C:N/I:H/A:N ).

3.2.6 USE OF HARD-CODED CRYPTOGRAPHIC KEY CWE-321

If this vulnerability is exploited, sensitive information could be disclosed.
As a result, unauthorized users could view or execute programs.

CVE-2022-29827 has been assigned to this vulnerability. A CVSS v3 base score of
6.8 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:C/
C:H/I:N/A:N ).

3.2.7 USE OF HARD-CODED CRYPTOGRAPHIC KEY CWE-321

If this vulnerability is exploited, sensitive information could be disclosed.
As a result, unauthorized users could view or execute programs.

CVE-2022-29828 has been assigned to this vulnerability. A CVSS v3 base score of
6.8 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:C/
C:H/I:N/A:N ).

3.2.8 USE OF HARD-CODED CRYPTOGRAPHIC KEY CWE-321

If this vulnerability is exploited, sensitive information could be disclosed.
As a result, unauthorized users could view or execute programs.

CVE-2022-29829 has been assigned to this vulnerability. A CVSS v3 base score of
6.8 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:C/
C:H/I:N/A:N ).

3.2.9 USE OF HARD-CODED CRYPTOGRAPHIC KEY CWE-321

If this vulnerability is exploited, sensitive information could be tampered
with or disclosed. As a result, information about project files could be
obtained without permission by unauthorized users.

CVE-2022-29830 has been assigned to this vulnerability. A CVSS v3 base score of
9.1 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/
C:H/I:H/A:N ).

3.2.10 CLEARTEXT STORAGE OF SENSITIVE INFORMATION IN MEMORY CWE-316

If this vulnerability is exploited, sensitive information could be disclosed.
As a result, unauthorized users could obtain information about the safety CPU
module project file.

CVE-2022-29832 has been assigned to this vulnerability. A CVSS v3 base score of
3.7 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:U/
C:L/I:N/A:N ).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: Japan

3.4 RESEARCHER

Anton Dorfman, Vladimir Nazarov, Dmitry Sklyarov, and Iliya Rogachev of
Positive Technologies reported CVE-2022-25164, CVE-2022-29825, CVE-2022-29826,
CVE-2022-29827, CVE-2022-29828, CVE-2022-29829, and CVE-2022-29830 to
Mistubishi Electric. Ivan Speziale of Nozomi Networks reported CVE-2022-29831,
CVE-2022-29832, and CVE-2022-29833 to CISA.

4. MITIGATIONS

Mitsubishi Electric released and recommends users update to the latest version:

  o GX Works3 - CVE-2022-29826: Download fixed Ver. 1.090U or later

For all other listed vulnerabilities, Mitsubishi Electric released mitigations/
workarounds for users to follow:

  o Ensure malicious actors cannot access project files, configuration files,
    or security keys stored on the host machine via untrusted networks or
    hosts.
  o Install antivirus software on the host machine running the software.
  o Encrypt project files and security keys when sending or receiving over the
    internet.
  o Use the "authentication with a certificate" function instead of "username /
    password authentication" for user authentication for access from OPC UA
    clients to MELSEC iQ-R series OPC UA server modules (MX OPC UA Module
    Configurator-R only).

CISA recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. Specifically, users should:

  o Minimize network exposure for all control system devices and/or systems,
    and ensure they are not accessible from the Internet .
  o Locate control system networks and remote devices behind firewalls and
    isolate them from the business network.
  o When remote access is required, use secure methods, such as Virtual Private
    Networks (VPNs), recognizing VPNs may have vulnerabilities and should be
    updated to the most current version available. Also recognize VPN is only
    as secure as its connected devices.

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 cisa.gov/ics 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 cisa.gov/ics 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.

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.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: https://auscert.org.au/gpg-key/
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=9bXH
-----END PGP SIGNATURE-----