Denial of service in OMRON CJ series and CS/CJ Series
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2023-38744 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
CJ2M-CPU3 Unit Hardware solutions / Routers & switches, VoIP, GSM, etc CJ2H-CPU6-EIP Unit Hardware solutions / Routers & switches, VoIP, GSM, etc CS1W-EIP21 Hardware solutions / Routers & switches, VoIP, GSM, etc CJ1W-EIP21 Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Omron |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Input validation error
EUVDB-ID: #VU78803
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-38744
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the built-in EtherNet/IP port and the communication function. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCJ2M-CPU3 Unit: 2.18
CJ2H-CPU6-EIP Unit: 3.04
CS1W-EIP21: 3.04
CJ1W-EIP21: 3.04
External linkshttp://jvn.jp/en/vu/JVNVU92193064/index.html
http://www.ia.omron.com/product/vulnerability/OMSR-2023-006_en.pdf
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
