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AUSCERT External Security Bulletin Redistribution
ESB-2022.5797
ICS Advisory (ICSA-22-314-08) Omron NJ/NX-series Machine
Automation Controllers
11 November 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Omron NJ/NX-series Controllers and Software
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2022-34151 CVE-2022-33208
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-22-314-08
Comment: CVSS (Max): 9.4 CVE-2022-34151 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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:L/I:H/A:H
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ICS Advisory (ICSA-22-314-08 )
Omron NJ/NX-series Machine Automation Controllers
Original release date: November 10, 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 9.4
o ATTENTION: Exploitable remotely/low attack complexity/public exploits are
available
o Vendor: Omron
o Equipment: NJ/NX-series Controllers and Software
o Vulnerabilities: Hard-coded Credentials, Authentication Bypass by
Capture-replay
2. RISK EVALUATION
Successful exploitation of these vulnerabilities may allow an attacker to
bypass authentication in the communications connection process to login and
operate the controller products without authorization.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of NJ/NX-series, a machine automation controller, are
affected:
o NX7-series Machine Automation Controller (All Models): Versions 1.28 and
prior
o NX1-series Machine Automation Controller (All Models): Versions 1.48 and
prior
o NJ-series Machine Automation Controller (All Models): Versions 1.48 and
prior
o Automation Software Sysmac Studio (All Models): Versions 1.49 and prior
o NA-series Programable Terminal (NA5-15W, NA5-12W, NA5-9W, NA5-7W): Runtime
versions 1.15 and prior
3.2 VULNERABILITY OVERVIEW
3.2.1 USE OF HARD-CODED CREDENTIALS CWE-798
Use of hard-coded credentials vulnerability exists in machine automation
controller NJ series models v1.48 and earlier, machine automation controller
NX7 series models v1.28 and earlier, machine automation controller NX1 series
models v1.48 and earlier, automation software Sysmac Studio models v1.49 and
earlier, and programmable terminal (PT) NA series NA5-15W/NA5-12W/NA5-9W/NA5-7W
models with runtime v1.15 and earlier; this may allow a remote attacker who
successfully obtained the user credentials by analyzing the affected product to
access the controller.
CVE-2022-34151 has been assigned to this vulnerability. A CVSS v3 base score of
9.4 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/
C:L/I:H/A:H ).
3.2.2 AUTHENTICATION BYPASS BY CAPTURE-REPLAY CWE-294
An attacker who can capture and analyze communication between the affected
controllers and either automation software Sysmac Studio and/or a programmable
terminal (PT) can obtain sensitive information that would allow the attacker to
bypass authentication and access the controller.
CVE-2022-33208 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:H/PR:N/UI:R/S:U/
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
Reid Wightman of Dragos reported these vulnerabilities to CISA.
4. MITIGATIONS
Omron recommends the following:
o NX7-series Machine Automation Controller: Update to version 1.29 or higher
o NX1-series Machine Automation Controller: Update to version 1.50 or higher
o NJ-series Machine Automation Controller (NJ501-1300, NJ501-1400,
NJ501-1500): Update to version 1.49 or higher
o NJ-series Machine Automation Controller (All other models): Update to
version 1.50 or higher
o Automation Software Sysmac Studio: Update to version 1.50 or higher
o NA-series Programable Terminal: Update to runtime version 1.16 or higher
For information on how to obtain and update firmware for the countermeasure
version of the product, contact Omron sales office or distributors . Users can
update the Sysmac Studio to the latest versions using the installed Omron
Automation Software AutoUpdate tool.
Omron recommends customers take the following mitigation measures to minimize
the risk of exploitation of this vulnerability:
Enable antivirus protection
o Protect any PC with access to the control system against malware by
ensuring the installation and maintenance of up-to-date commercial grade
antivirus software protection.
Implement security measures to prevent unauthorized access:
o Minimize connection of control systems and equipment to open networks
preventing untrusted devices from accessing them.
o Implement firewalls by shutting down unused communications ports, limiting
communications between hosts, and isolate affected systems from the IT
network.
o Use a virtual private network (VPN) for remote access to control systems
and equipment.
o Use strong passwords and change passwords frequently.
o Install physical controls that only permit authorized personnel access to
control systems and equipment.
o Scan USB drives or similar devices for viruses and malware to ensure the
devices are safe before connecting them to systems and devices.
o When possible, enforce multifactor authentication (MFA) on all devices with
remote access to control systems and equipment.
Protect data input and output:
o Perform process validation, such as backup validation or range checks, to
cope with unintentional modification of input/output data to control
systems and devices.
Use data recovery:
o Conduct periodical data backups and maintenance to prepare for potential
data loss.
For more information see Omron's advisory: OMSR-2022-001
This vulnerability and countermeasures correspond to the those reported in the
CISA ICS Alert: APT Cyber Tools Targeting ICS/SCADA 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 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.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
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