{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2023-20227",
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "state": "PUBLISHED",
        "assignerShortName": "cisco",
        "dateReserved": "2022-10-27T18:47:50.369Z",
        "datePublished": "2023-09-27T17:21:38.623Z",
        "dateUpdated": "2024-08-02T09:05:35.876Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
                "shortName": "cisco",
                "dateUpdated": "2024-01-25T16:58:25.292Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A vulnerability in the Layer 2 Tunneling Protocol (L2TP) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r This vulnerability is due to improper handling of certain L2TP packets. An attacker could exploit this vulnerability by sending crafted L2TP packets to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition.\r\n\r Note: Only traffic directed to the affected system can be used to exploit this vulnerability."
                }
            ],
            "affected": [
                {
                    "vendor": "Cisco",
                    "product": "Cisco IOS XE Software",
                    "versions": [
                        {
                            "version": "16.8.1",
                            "status": "affected"
                        },
                        {
                            "version": "16.8.1a",
                            "status": "affected"
                        },
                        {
                            "version": "16.8.1b",
                            "status": "affected"
                        },
                        {
                            "version": "16.8.1s",
                            "status": "affected"
                        },
                        {
                            "version": "16.8.1c",
                            "status": "affected"
                        },
                        {
                            "version": "16.8.1d",
                            "status": "affected"
                        },
                        {
                            "version": "16.8.2",
                            "status": "affected"
                        },
                        {
                            "version": "16.8.1e",
                            "status": "affected"
                        },
                        {
                            "version": "16.8.3",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.1",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.2",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.1a",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.1b",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.1s",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.3",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.4",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.5",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.5f",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.6",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.7",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.8",
                            "status": "affected"
                        },
                        {
                            "version": "16.10.1",
                            "status": "affected"
                        },
                        {
                            "version": "16.10.1a",
                            "status": "affected"
                        },
                        {
                            "version": "16.10.1b",
                            "status": "affected"
                        },
                        {
                            "version": "16.10.1s",
                            "status": "affected"
                        },
                        {
                            "version": "16.10.1c",
                            "status": "affected"
                        },
                        {
                            "version": "16.10.1e",
                            "status": "affected"
                        },
                        {
                            "version": "16.10.1d",
                            "status": "affected"
                        },
                        {
                            "version": "16.10.2",
                            "status": "affected"
                        },
                        {
                            "version": "16.10.1f",
                            "status": "affected"
                        },
                        {
                            "version": "16.10.1g",
                            "status": "affected"
                        },
                        {
                            "version": "16.10.3",
                            "status": "affected"
                        },
                        {
                            "version": "16.11.1",
                            "status": "affected"
                        },
                        {
                            "version": "16.11.1a",
                            "status": "affected"
                        },
                        {
                            "version": "16.11.1b",
                            "status": "affected"
                        },
                        {
                            "version": "16.11.2",
                            "status": "affected"
                        },
                        {
                            "version": "16.11.1s",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.1",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.1s",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.1a",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.1c",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.1w",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.2",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.1y",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.2a",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.3",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.8",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.2s",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.1x",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.1t",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.4",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.3s",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.4a",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.5",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.6",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.1z1",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.5a",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.1z2",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.6a",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.7",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.10a",
                            "status": "affected"
                        },
                        {
                            "version": "17.1.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.1.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.1.1s",
                            "status": "affected"
                        },
                        {
                            "version": "17.1.1t",
                            "status": "affected"
                        },
                        {
                            "version": "17.1.3",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.1r",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.1v",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.2",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.3",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.2",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.3",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.1w",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.2a",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.1x",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.1z",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.4",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.5",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.4a",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.6",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.4c",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.5a",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.5b",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.7",
                            "status": "affected"
                        },
                        {
                            "version": "17.4.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.4.2",
                            "status": "affected"
                        },
                        {
                            "version": "17.4.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.4.1b",
                            "status": "affected"
                        },
                        {
                            "version": "17.4.2a",
                            "status": "affected"
                        },
                        {
                            "version": "17.5.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.5.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.5.1b",
                            "status": "affected"
                        },
                        {
                            "version": "17.5.1c",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Error Handling",
                            "type": "cwe",
                            "cweId": "CWE-388"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-l2tp-dos-eB5tuFmV",
                    "name": "cisco-sa-ios-xe-l2tp-dos-eB5tuFmV"
                }
            ],
            "metrics": [
                {
                    "format": "cvssV3_1",
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
                        "baseScore": 8.6,
                        "baseSeverity": "HIGH",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH"
                    }
                }
            ],
            "exploits": [
                {
                    "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."
                }
            ],
            "source": {
                "advisory": "cisco-sa-ios-xe-l2tp-dos-eB5tuFmV",
                "discovery": "EXTERNAL",
                "defects": [
                    "CSCwe70596"
                ]
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T09:05:35.876Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-l2tp-dos-eB5tuFmV",
                        "name": "cisco-sa-ios-xe-l2tp-dos-eB5tuFmV",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            }
        ]
    }
}