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HIGH · 7.5

CVE-2023-38744

Denial-of-service (DoS) vulnerability due to improper validation of specified type of input issue exists in the built-in EtherNet/IP port of the CJ Series CJ2 CPU unit and the communication function o...

Vulnerability Description

Denial-of-service (DoS) vulnerability due to improper validation of specified type of input issue exists in the built-in EtherNet/IP port of the CJ Series CJ2 CPU unit and the communication function of the CS/CJ Series EtherNet/IP unit. If an affected product receives a packet which is specially crafted by a remote unauthenticated attacker, the unit of the affected product may fall into a denial-of-service (DoS) condition. Affected products/versions are as follows: CJ2M CPU Unit CJ2M-CPU3[] Unit version of the built-in EtherNet/IP section Ver. 2.18 and earlier, CJ2H CPU Unit CJ2H-CPU6[]-EIP Unit version of the built-in EtherNet/IP section Ver. 3.04 and earlier, CS/CJ Series EtherNet/IP Unit CS1W-EIP21 V3.04 and earlier, and CS/CJ Series EtherNet/IP Unit CJ1W-EIP21 V3.04 and earlier.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
OmronCj2M-Cpu35 Firmware<= 2.18
OmronCj2M-Cpu35-
OmronCj2M-Cpu34 Firmware<= 2.18
OmronCj2M-Cpu34-
OmronCj2M-Cpu33 Firmware<= 2.18
OmronCj2M-Cpu33-
OmronCj2M-Cpu32 Firmware<= 2.18
OmronCj2M-Cpu32-
OmronCj2M-Cpu31 Firmware<= 2.18
OmronCj2M-Cpu31-
OmronCj2H-Cpu68-Eip Firmware<= 3.04
OmronCj2H-Cpu68-Eip-
OmronCj2H-Cpu67-Eip Firmware<= 3.04
OmronCj2H-Cpu67-Eip-
OmronCj2H-Cpu66-Eip Firmware<= 3.04
OmronCj2H-Cpu66-Eip-
OmronCj2H-Cpu65-Eip Firmware<= 3.04
OmronCj2H-Cpu65-Eip-
OmronCj2H-Cpu64-Eip Firmware<= 3.04
OmronCj2H-Cpu64-Eip-

Related Weaknesses (CWE)

CWE-1284

References

FAQ

What is CVE-2023-38744?

CVE-2023-38744 is a vulnerability with a CVSS score of 7.5 (HIGH). Denial-of-service (DoS) vulnerability due to improper validation of specified type of input issue exists in the built-in EtherNet/IP port of the CJ Series CJ2 CPU unit and the communication function o...

How severe is CVE-2023-38744?

CVE-2023-38744 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-38744?

Check the references section above for vendor advisories and patch information. Affected products include: Omron Cj2M-Cpu35 Firmware, Omron Cj2M-Cpu35, Omron Cj2M-Cpu34 Firmware, Omron Cj2M-Cpu34, Omron Cj2M-Cpu33 Firmware.