1. EXECUTIVE SUMMARY
- CVSS v3 7.5
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Yokogawa
- Equipment: Dual-redundant Platform for Computer (PC2CKM)
- Vulnerability: Unchecked Return Value
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to perform a denial-of-service.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of Yokogawa PC2CKM, a dual-redundant platform computer, are affected:
- Dual-redundant Platform for Computer (PC2CKM): R1.01.00 to R2.03.00
3.2 Vulnerability Overview
3.2.1 UNCHECKED RETURN VALUE CWE-252
If a computer on which the affected product is installed receives a large number of UDP broadcast packets in a short period, occasionally that computer may restart. If both the active and standby computers are restarted at the same time, the functionality on that computer may be temporarily unavailable.
CVE-2024-8110 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
3.3 BACKGROUND
- CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Energy, Food and Agriculture
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: Japan
3.4 RESEARCHER
Yokogawa reported this vulnerability to JPCERT.
4. MITIGATIONS
Yokogawa recommends users update to the following version:
- Dual-redundant Platform for Computer (PC2CKM): Update to R2.03.10
For more information, contact Yokogawa.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:
- Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
- Locate control system networks and remote devices behind firewalls and isolating them from business networks.
- When remote access is required, use more 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 the 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 CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
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 exploitation specifically targeting this vulnerability has been reported to CISA at this time.
5. UPDATE HISTORY
- September 17, 2024: Initial Publication
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