{
    "CVE_data_meta": {
        "ASSIGNER": "info@cert.vde.com",
        "DATE_PUBLIC": "2021-06-23T10:00:00.000Z",
        "ID": "CVE-2021-33541",
        "STATE": "PUBLIC",
        "TITLE": "Phoenix Contact: ILC1x Industrial controllers affected by Denial-of-Service vulnerability"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "ILC1x",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_name": "ILC1x0",
                                            "version_value": "all variants"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_name": "ILC1x1",
                                            "version_value": "all variants"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Phoenix Contact"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "This vulnerability was discovered by the Industrial Control Security Laboratory of Qi An Xin Technology Group Inc. from China and reported to CERT@VDE. 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": "Phoenix Contact Classic Line Controllers ILC1x0 and ILC1x1 in all versions/variants are affected by a Denial-of-Service vulnerability. The communication protocols and device access do not feature authentication measures. Remote attackers can use specially crafted IP packets to cause a denial of service on the PLC's network communication module. A successful attack stops all network communication. To restore the network connectivity the device needs to be restarted. The automation task is not affected."
            }
        ]
    },
    "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-770 Allocation of Resources Without Limits or Throttling"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://cert.vde.com/en-us/advisories/vde-2021-019",
                "refsource": "CONFIRM",
                "url": "https://cert.vde.com/en-us/advisories/vde-2021-019"
            }
        ]
    },
    "solution": [
        {
            "lang": "eng",
            "value": "Temporary Fix / Mitigation\n\nPhoenix 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 the Phoenix Contact application note:\nMeasures to protect network-capable devices with Ethernet connection (https://dam-mdc.phoenixcontact.com/asset/156443151564/0a870ae433c19148b80bd760f3a1c1f2/107913_en_03.pdf)"
        }
    ],
    "source": {
        "advisory": "VDE-2021-019",
        "defect": [
            "VDE-2021-019"
        ],
        "discovery": "EXTERNAL"
    }
}