{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2023-38744",
        "ASSIGNER": "vultures@jpcert.or.jp",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "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."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Denial-of-service (DoS)"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "OMRON Corporation",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "CJ2M CPU Unit",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "CJ2M-CPU3[] Unit version of the built-in EtherNet/IP section Ver. 2.18 and earlier"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "CJ2H CPU Unit",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "CJ2H-CPU6[]-EIP Unit version of the built-in EtherNet/IP section Ver. 3.04 and earlier"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "CS/CJ Series EtherNet/IP Unit",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "CS1W-EIP21 V3.04 and earlier"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "CJ1W-EIP21 V3.04 and earlier"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://www.ia.omron.com/product/vulnerability/OMSR-2023-006_en.pdf",
                "refsource": "MISC",
                "name": "https://www.ia.omron.com/product/vulnerability/OMSR-2023-006_en.pdf"
            },
            {
                "url": "https://jvn.jp/en/vu/JVNVU92193064/",
                "refsource": "MISC",
                "name": "https://jvn.jp/en/vu/JVNVU92193064/"
            }
        ]
    }
}