7.5
HIGH
CVE-2023-38744
"Rockwell Automation CJ Series EtherNet/IP Denial-of-Service 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.

INFO

Published Date :

Aug. 3, 2023, 5:15 a.m.

Last Modified :

Aug. 11, 2023, 9:01 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2023-38744 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Omron cj2m-cpu35_firmware
2 Omron cj2m-cpu34_firmware
3 Omron cj2m-cpu33_firmware
4 Omron cj2m-cpu32_firmware
5 Omron cj2m-cpu31_firmware
6 Omron cj2h-cpu68-eip_firmware
7 Omron cj2h-cpu67-eip_firmware
8 Omron cj2h-cpu66-eip_firmware
9 Omron cj2h-cpu65-eip_firmware
10 Omron cj2h-cpu64-eip_firmware
11 Omron cs1w-eip21_firmware
12 Omron cj1w-eip21_firmware
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-38744.

URL Resource
https://jvn.jp/en/vu/JVNVU92193064/ Third Party Advisory
https://www.ia.omron.com/product/vulnerability/OMSR-2023-006_en.pdf Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-38744 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-38744 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Aug. 11, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://jvn.jp/en/vu/JVNVU92193064/ No Types Assigned https://jvn.jp/en/vu/JVNVU92193064/ Third Party Advisory
    Changed Reference Type https://www.ia.omron.com/product/vulnerability/OMSR-2023-006_en.pdf No Types Assigned https://www.ia.omron.com/product/vulnerability/OMSR-2023-006_en.pdf Vendor Advisory
    Added CWE NIST NVD-CWE-Other
    Added CPE Configuration AND OR *cpe:2.3:o:omron:cj2m-cpu35_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.18 OR cpe:2.3:h:omron:cj2m-cpu35:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:omron:cj2m-cpu34_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.18 OR cpe:2.3:h:omron:cj2m-cpu34:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:omron:cj2m-cpu33_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.18 OR cpe:2.3:h:omron:cj2m-cpu33:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:omron:cj2m-cpu32_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.18 OR cpe:2.3:h:omron:cj2m-cpu32:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:omron:cj2m-cpu31_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.18 OR cpe:2.3:h:omron:cj2m-cpu31:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:omron:cj2h-cpu68-eip_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.04 OR cpe:2.3:h:omron:cj2h-cpu68-eip:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:omron:cj2h-cpu67-eip_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.04 OR cpe:2.3:h:omron:cj2h-cpu67-eip:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:omron:cj2h-cpu66-eip_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.04 OR cpe:2.3:h:omron:cj2h-cpu66-eip:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:omron:cj2h-cpu65-eip_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.04 OR cpe:2.3:h:omron:cj2h-cpu65-eip:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:omron:cj2h-cpu64-eip_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.04 OR cpe:2.3:h:omron:cj2h-cpu64-eip:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:omron:cs1w-eip21_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.04 OR cpe:2.3:h:omron:cs1w-eip21:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:omron:cj1w-eip21_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.04 OR cpe:2.3:h:omron:cj1w-eip21:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-38744 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-38744 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.17 }} 0.02%

score

0.55004

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability