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AUSCERT External Security Bulletin Redistribution
ESB-2023.2479
ICS Advisory | ICSA-23-122-01 Mitsubishi Electric Factory
Automation Products
3 May 2023
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Mitsubishi Electric Factory Automation Products
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Mitigation
CVE Names: CVE-2022-0002 CVE-2021-33150 CVE-2021-0146
CVE-2021-0127 CVE-2021-0089 CVE-2021-0086
CVE-2020-24512 CVE-2020-24489 CVE-2020-8670
Original Bulletin:
https://www.cisa.gov/news-events/ics-advisories/icsa-23-122-01
Comment: CVSS (Max): 8.8 CVE-2020-24489 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
CVSS Source: ICS-CERT
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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ICS Advisory (ICSA-23-122-01)
Mitsubishi Electric Factory Automation Products
Release Date
May 02, 2023
1. EXECUTIVE SUMMARY
o CVSS v3 8.8
o ATTENTION: Low attack complexity
o Vendor: Mitsubishi Electric
o Equipment: Factory Automation (FA) Products
o Vulnerabilities: Dependency on Vulnerable Third-Party Component
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow a malicious
attacker to escalate privileges, disclose parameter information in the affected
products, and cause a denial-of-service condition.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following Mitsubishi Electric Factory Automation products are affected:
o MELIPC Series
- MI5122-VM: All versions
- MI1002-W: All versions
- MI2012-W: All versions
- MI3321G-W: All versions
- MI3315G-W: All versions
o MELSEC iQ-R Series
- R102WCPU-W: All versions
o MELSEC Q Series
- Q24DHCCPU-V: All versions
- Q24DHCCPU-VG: All versions
- Q24DHCCPU-LS: All versions
- Q26DHCCPU-LS: All versions
3.2 VULNERABILITY OVERVIEW
3.2.1 DEPENDENCY ON VULNERABLE THIRD-PARTY COMPONENT CWE-1395
These vulnerabilities in Intel products could allow a malicious attacker to
escalate privileges, disclose parameter information, and cause a
denial-of-service condition in Mitsubishi Electric MELIPC, MELSEC iQ-R, and
MELSEC Q Series products.
CVE-2020-24489, CVE-2020-8670, CVE-2020-24512, CVE-2021-0146, CVE-2021-0089,
CVE-2021-0086, CVE-2021-0127, CVE-2021-33150, CVE-2022-0002 has been
assigned to these vulnerabilities. A worst-case CVSS v3 base score of 8.8 has
been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Japan
3.4 RESEARCHER
Mitsubishi Electric reported these vulnerabilities to CISA.
4. MITIGATIONS
Mitsubishi Electric recommends users refer to the following Intel advisories to
assist in mitigating these vulnerabilities:
o CVE-2020-8670- INTEL-SA-00463
o CVE-2020-24489- INTEL-SA-00442
o CVE-2020-24512- INTEL-SA-00464
o CVE-2021-0127- INTEL-SA-00532
o CVE-2021-0146- INTEL-SA-00528
o CVE-2021-0086- INTEL-SA-00516
o CVE-2021-0089- INTEL-SA-00516
o CVE-2021-33150- INTEL-SA-00609
o CVE-2022-0002- INTEL-SA-00598
For additional information, refer to Mitsubishi Electric's bulletin.
Mitsubishi Electric recommends that users take the following mitigation
measures to minimize the risk of exploiting these vulnerabilities:
o Restrict physical access to the product from unauthorized users.
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.
Organizations observing suspected malicious activity should follow established
internal procedures and report 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 attachments in unsolicited 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 these vulnerabilities. These
vulnerabilities are not exploitable remotely. These vulnerabilities have a high
attack complexity.
Related Advisories
Apr 25, 2023
ICS Advisory | ICSA-23-115-01
Keysight N8844A Data Analytics Web Service
Apr 25, 2023
ICS Advisory | ICSA-23-115-02
Scada-LTS Third Party Component
Apr 20, 2023
ICS Advisory | ICSA-23-110-01
INEA ME RTU
Apr 18, 2023
ICS Advisory | ICSA-23-108-01
Omron CS/CJ Series
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