FKIE_CVE-2023-38744
Vulnerability from fkie_nvd - Published: 2023-08-03 05:15 - Updated: 2026-06-17 06:11
Severity
Summary
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.
References
| URL | Tags | ||
|---|---|---|---|
| vultures@jpcert.or.jp | https://jvn.jp/en/vu/JVNVU92193064/ | Third Party Advisory | |
| vultures@jpcert.or.jp | https://www.ia.omron.com/product/vulnerability/OMSR-2023-006_en.pdf | Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://jvn.jp/en/vu/JVNVU92193064/ | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://www.ia.omron.com/product/vulnerability/OMSR-2023-006_en.pdf | Vendor Advisory |
Impacted products
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"vendor": "OMRON Corporation",
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{
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}
]
},
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"vendor": "OMRON Corporation",
"versions": [
{
"status": "affected",
"version": "CJ2H-CPU6[]-EIP Unit version of the built-in EtherNet/IP section Ver. 3.04 and earlier"
}
]
},
{
"product": "CS/CJ Series EtherNet/IP Unit",
"vendor": "OMRON Corporation",
"versions": [
{
"status": "affected",
"version": "CS1W-EIP21 V3.04 and earlier"
}
]
},
{
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"vendor": "OMRON Corporation",
"versions": [
{
"status": "affected",
"version": "CJ1W-EIP21 V3.04 and earlier"
}
]
}
],
"source": "vultures@jpcert.or.jp"
},
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"version": "0",
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"vendor": "omron",
"versions": [
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"status": "affected",
"version": "0",
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{
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"status": "affected",
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"cveTags": [],
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{
"lang": "en",
"value": "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."
}
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"id": "CVE-2023-38744",
"lastModified": "2026-06-17T06:11:05.203",
"metrics": {
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{
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"role": "CISA Coordinator",
"timestamp": "2024-10-17T15:04:47.223773Z",
"version": "2.0.3"
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"published": "2023-08-03T05:15:10.417",
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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