CVE-2023-20227

{"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"]}]}]}}

{}

{"affected": [{"affectedData": [{"product": "Cisco IOS XE Software", "vendor": "Cisco", "versions": [{"status": "affected", "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": 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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."}, {"lang": "es", "value": "Una vulnerabilidad en la funci\u00f3n Layer 2 Tunneling Protocol (L2TP) del software Cisco IOS XE podr\u00eda permitir que un atacante remoto no autenticado cause una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad se debe al manejo inadecuado de ciertos paquetes L2TP. Un atacante podr\u00eda aprovechar esta vulnerabilidad enviando paquetes L2TP manipulados a un dispositivo afectado. Un exploit exitoso podr\u00eda permitir que el atacante haga que el dispositivo se recargue inesperadamente, lo que resultar\u00eda en una condici\u00f3n DoS. Nota: Solo se puede utilizar el tr\u00e1fico dirigido al sistema afectado para aprovechar esta vulnerabilidad."}], "id": "CVE-2023-20227", "lastModified": "2026-06-17T05:29:58.120", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "psirt@cisco.com", "type": "Secondary"}, {"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-09-27T18:15:11.370", "references": [{"source": "psirt@cisco.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-l2tp-dos-eB5tuFmV"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-l2tp-dos-eB5tuFmV"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-388"}], "source": "psirt@cisco.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{}