Vulnerability Details : 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 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.
Vulnerability category: Denial of service
Products affected by CVE-2023-38744
- cpe:2.3:o:omron:cs1w-eip21_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:omron:cj2m-cpu35_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:omron:cj2m-cpu34_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:omron:cj2m-cpu33_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:omron:cj2m-cpu32_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:omron:cj2m-cpu31_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:omron:cj2h-cpu68-eip_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:omron:cj2h-cpu67-eip_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:omron:cj2h-cpu66-eip_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:omron:cj2h-cpu65-eip_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:omron:cj2h-cpu64-eip_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:omron:cj1w-eip21_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-38744
0.24%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 47 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-38744
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2023-38744
-
The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.Assigned by: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
References for CVE-2023-38744
-
https://www.ia.omron.com/product/vulnerability/OMSR-2023-006_en.pdf
Vendor Advisory
-
https://jvn.jp/en/vu/JVNVU92193064/
JVNVU#92193064: OMRON CJ series and CS/CJ Series EtherNet/IT unit vulnerable to Denial-of-Service (DoS)Third Party Advisory
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