{
    "CVE_data_meta": {
        "ASSIGNER": "info@cert.vde.com",
        "DATE_PUBLIC": "2021-06-23T10:00:00.000Z",
        "ID": "CVE-2021-21003",
        "STATE": "PUBLIC",
        "TITLE": "Denial of Service Vulnerability in Phoenix Contact FL SWITCH SMCS series products"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "FL SWITCH",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMCS 16TX (2700996)",
                                            "version_value": "4.70"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMCS 14TX/2FX (2700997)",
                                            "version_value": "4.70"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMCS 14TX/2FX-SM (2701466)",
                                            "version_value": "4.70"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMCS 8GT (2891123)",
                                            "version_value": "4.70"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMCS 6GT/2SFP (2891479)",
                                            "version_value": "4.70"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMCS 8TX-PN (2989103)",
                                            "version_value": "4.70"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMCS 4TX-PN (2989093)",
                                            "version_value": "4.70"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMCS 8TX (2989226)",
                                            "version_value": "4.70"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMCS 6TX/2SFP (2989323)",
                                            "version_value": "4.70"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMN 6TX/2POF-PN (2700290)",
                                            "version_value": "4.70"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMN 8TX-PN (2989501)",
                                            "version_value": "4.70"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMN 6TX/2FX (2989543)",
                                            "version_value": "4.70"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMN 6TX/2FX SM (2989556)",
                                            "version_value": "4.70"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "FL NAT",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMN 8TX (2989365)",
                                            "version_value": "4.63"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "SMN 8TX-M (2702443)",
                                            "version_value": "4.63"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Phoenix Contact"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "This vulnerability has been discovered and reported by Anne Borcherding, Fraunhofer- Institut für Optronik, Systemtechnik und Bildauswertung IOSB. 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": "In Phoenix Contact FL SWITCH SMCS series products in multiple versions fragmented TCP-Packets may cause a Denial of Service of Web-, SNMP- and ICMP-Echo services. The switching functionality of the device is not affected."
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "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:L",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-404 Improper Resource Shutdown or Release"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://cert.vde.com/en-us/advisories/vde-2021-023",
                "refsource": "CONFIRM",
                "url": "https://cert.vde.com/en-us/advisories/vde-2021-023"
            }
        ]
    },
    "source": {
        "advisory": "VDE-2021-023",
        "defect": [
            "VDE-2021-023"
        ],
        "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 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"
        }
    ]
}