{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-20434",
        "ASSIGNER": "psirt@cisco.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "A vulnerability in Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the control plane of an affected device.\r\n\r This vulnerability is due to improper handling of frames with VLAN tag information. An attacker could exploit this vulnerability by sending crafted frames to an affected device. A successful exploit could allow the attacker to render the control plane of the affected device unresponsive. The device would not be accessible through the console or CLI, and it would not respond to ping requests, SNMP requests, or requests from other control plane protocols. Traffic that is traversing the device through the data plane is not affected. A reload of the device is required to restore control plane services."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Integer Overflow or Wraparound",
                        "cweId": "CWE-190"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Cisco",
                    "product": {
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                            {
                                "product_name": "Cisco IOS XE Software",
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                                            "version_affected": "=",
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                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "16.10.1e"
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                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
                                            "version_value": "16.11.1b"
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                                        {
                                            "version_affected": "=",
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                                            "version_affected": "=",
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                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
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                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        },
                                        {
                                            "version_affected": "=",
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                                        },
                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        },
                                        {
                                            "version_affected": "=",
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                                        {
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
                                            "version_value": "17.9.2"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "17.9.3"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "17.9.4"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "17.9.5"
                                        },
                                        {
                                            "version_affected": "=",
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                                        },
                                        {
                                            "version_affected": "=",
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                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "17.12.1"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "17.12.2"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "17.12.3"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "17.13.1"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "17.14.1"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "17.11.99SW"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vlan-dos-27Pur5RT",
                "refsource": "MISC",
                "name": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vlan-dos-27Pur5RT"
            }
        ]
    },
    "source": {
        "advisory": "cisco-sa-vlan-dos-27Pur5RT",
        "discovery": "EXTERNAL",
        "defects": [
            "CSCwi34160"
        ]
    },
    "exploit": [
        {
            "lang": "en",
            "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
    ],
    "impact": {
        "cvss": [
            {
                "version": "3.1",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                "baseScore": 4.3,
                "baseSeverity": "MEDIUM",
                "attackVector": "ADJACENT_NETWORK",
                "attackComplexity": "LOW",
                "privilegesRequired": "NONE",
                "userInteraction": "NONE",
                "scope": "UNCHANGED",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "availabilityImpact": "LOW"
            }
        ]
    }
}