{
    "CVE_data_meta": {
        "ASSIGNER": "info@cert.vde.com",
        "DATE_PUBLIC": "2021-08-31T07:00:00.000Z",
        "ID": "CVE-2021-34578",
        "STATE": "PUBLIC",
        "TITLE": "WAGO: Authentication Vulnerability in Web-Based Management"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "PLC",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<=",
                                            "version_name": "750-362",
                                            "version_value": "FW07"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "750-363",
                                            "version_value": "FW07"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "750-823",
                                            "version_value": "FW07"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "750-832/xxx-xxx",
                                            "version_value": "FW07"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "750-862",
                                            "version_value": "FW07"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "750-891",
                                            "version_value": "FW07"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "750-890/xxx-xxx",
                                            "version_value": "FW07"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "750-893",
                                            "version_value": "FW07"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "WAGO"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "Maxim Rupp (https://rupp.it) reported this vulnerability to WAGO. CERT@VDE coordinated."
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "This vulnerability allows an attacker who has access to the WBM to read and write settings-parameters of the device by sending specifically constructed requests without authentication on multiple WAGO PLCs in firmware versions up to FW07."
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-287 Improper Authentication"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://cert.vde.com/en-us/advisories/vde-2020-044",
                "refsource": "CONFIRM",
                "url": "https://cert.vde.com/en-us/advisories/vde-2020-044"
            }
        ]
    },
    "solution": [
        {
            "lang": "eng",
            "value": "Update the device to the latest FW version."
        }
    ],
    "source": {
        "advisory": "VDE-2020-044",
        "discovery": "EXTERNAL"
    },
    "work_around": [
        {
            "lang": "eng",
            "value": "Restrict network access to the device.\nDo not directly connect the device to the internet.\nDisable unused TCP/UDP ports.\nDisable web-based management ports 80/443 after the configuration phase"
        }
    ]
}