{
    "CVE_data_meta": {
        "ASSIGNER": "info@cert.vde.com",
        "DATE_PUBLIC": "2021-08-03T22:00:00.000Z",
        "ID": "CVE-2021-34570",
        "STATE": "PUBLIC",
        "TITLE": "Phoenix Contact: DoS for PLCnext Control devices in versions prior to 2021.0.5 LTS"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "AXC F",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "AXC F 1152 (1151412)",
                                            "version_value": "2021.0.5 LTS"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "AXC F 2152 (2404267)",
                                            "version_value": "2021.0.5 LTS"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "AXC F 3152 (1069208)",
                                            "version_value": "2021.0.5 LTS"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "AXC F 2152 Starterkit (1046568)",
                                            "version_value": "2021.0.5 LTS"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "RFC",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "RFC 4072S (1051328)",
                                            "version_value": "2021.0.5 LTS"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "PLCnext",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "PLCnext Technology Starterkit (1188165)",
                                            "version_value": "2021.0.5 LTS"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Phoenix Contact"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "The vulnerability was discovered by Oliver Carrigan of Dionach. We kindly appreciate the coordinated disclosure of these vulnerabilities by the finder.  PHOENIX CONTACT thanks CERT@VDE for the coordination and support with this publication."
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests."
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": {
        "cvss": {
            "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"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-20 Improper Input Validation"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://cert.vde.com/en/advisories/VDE-2021-029/",
                "refsource": "CONFIRM",
                "url": "https://cert.vde.com/en/advisories/VDE-2021-029/"
            }
        ]
    },
    "solution": [
        {
            "lang": "eng",
            "value": "Phoenix Contact recommends affected users to upgrade to the current Firmware 2021.0.5 LTS or higher which fixes this vulnerability."
        }
    ],
    "source": {
        "advisory": "VDE-2021-029",
        "discovery": "EXTERNAL"
    },
    "work_around": [
        {
            "lang": "eng",
            "value": "Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to our application note:\nMeasures to protect network-capable devices with Ethernet connection"
        }
    ]
}