CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
56.8%
Successful exploitation of this vulnerability could lead to a communication error and may result in a denial-of-service condition.
The following versions of Mitsubishi Electric India Ethernet communication Extension unit GC-ENET-COM, are affected:
3.2.1 SIGNAL HANDLER RACE CONDITION CWE-364
A vulnerability exists in the Ethernet communication Extension unit (GC-ENET-COM) of GOC35 series due to a signal handler race condition. If a malicious attacker sends a large number of specially crafted packets, communication errors could occur and could result in a denial-of-service condition when GC-ENET-COM is configured as a Modbus TCP Server.
CVE-2023-1285 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Faruk Kazi and Parul Sindhwad of COE-CNDS lab, VJTI, Mumbai India, reported these vulnerabilities to Mitsubishi Electric India.
Mitsubishi Electric India has released the following countermeasure/mitigation:
Mitsubishi Electric India recommends users take the following mitigations to minimize the risk of attackers exploiting this vulnerability if the mentioned countermeasures cannot be implemented.
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.
No known public exploits specifically target this vulnerability.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-1285
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cwe.mitre.org/data/definitions/364.html
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