{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-20187", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2022-10-27T18:47:50.364Z", "datePublished": "2023-09-27T17:19:44.488Z", "dateUpdated": "2024-08-02T09:05:36.976Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2024-01-25T16:57:52.741Z"}, "descriptions": [{"lang": "en", "value": "A vulnerability in the Multicast Leaf Recycle Elimination (mLRE) feature of Cisco IOS XE Software for Cisco ASR 1000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. \r\n\r This vulnerability is due to incorrect handling of certain IPv6 multicast packets when they are fanned out more than seven times on an affected device. An attacker could exploit this vulnerability by sending a specific IPv6 multicast or IPv6 multicast VPN (MVPNv6) packet through the affected device. A successful exploit could allow the attacker to cause a reload of the affected device, resulting in a DoS condition."}], "affected": [{"vendor": "Cisco", "product": "Cisco IOS XE Software", "versions": [{"version": "3.7.1S", "status": "affected"}, {"version": "3.7.2S", "status": "affected"}, {"version": "3.7.3S", "status": "affected"}, {"version": "3.7.4S", "status": "affected"}, {"version": "3.7.5S", "status": "affected"}, {"version": "3.7.6S", "status": "affected"}, {"version": "3.7.7S", "status": "affected"}, {"version": "3.7.2tS", "status": "affected"}, {"version": "3.8.0S", "status": "affected"}, {"version": "3.8.1S", "status": "affected"}, {"version": "3.8.2S", "status": "affected"}, {"version": "3.9.1S", "status": "affected"}, {"version": "3.9.0S", "status": "affected"}, {"version": "3.9.2S", "status": "affected"}, {"version": "3.10.0S", "status": "affected"}, {"version": "3.10.1S", "status": "affected"}, {"version": "3.10.2S", "status": "affected"}, {"version": "3.10.3S", 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"status": "affected"}, {"version": "3.16.0S", "status": "affected"}, {"version": "3.16.1aS", "status": "affected"}, {"version": "3.16.2S", "status": "affected"}, {"version": "3.16.3S", "status": "affected"}, {"version": "3.16.2bS", "status": "affected"}, {"version": "3.16.4aS", "status": "affected"}, {"version": "3.16.4bS", "status": "affected"}, {"version": "3.16.5S", "status": "affected"}, {"version": "3.16.6S", "status": "affected"}, {"version": "3.16.7S", "status": "affected"}, {"version": "3.16.6bS", "status": "affected"}, {"version": "3.16.7aS", "status": "affected"}, {"version": "3.16.7bS", "status": "affected"}, {"version": "3.16.8S", "status": "affected"}, {"version": "3.16.9S", "status": "affected"}, {"version": "3.16.10S", "status": "affected"}, {"version": "3.17.0S", "status": "affected"}, {"version": "3.17.1S", "status": "affected"}, {"version": "3.17.2S", "status": "affected"}, {"version": "3.17.1aS", "status": "affected"}, {"version": "3.17.3S", "status": "affected"}, 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"17.10.1", "status": "affected"}, {"version": "17.10.1a", "status": "affected"}, {"version": "17.8.1", "status": "affected"}, {"version": "17.8.1a", "status": "affected"}, {"version": "17.9.1", "status": "affected"}, {"version": "17.9.2", "status": "affected"}, {"version": "17.9.1a", "status": "affected"}, {"version": "17.9.3", "status": "affected"}, {"version": "17.9.2a", "status": "affected"}, {"version": "17.9.3a", "status": "affected"}, {"version": "17.11.1", "status": "affected"}, {"version": "17.11.1a", "status": "affected"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Use of Out-of-range Pointer Offset", "type": "cwe", "cweId": "CWE-823"}]}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-mlre-H93FswRz", "name": "cisco-sa-mlre-H93FswRz"}], "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-mlre-H93FswRz", "discovery": "EXTERNAL", "defects": ["CSCwe91722"]}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T09:05:36.976Z"}, "title": "CVE Program Container", "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-mlre-H93FswRz", "name": "cisco-sa-mlre-H93FswRz", "tags": ["x_transferred"]}]}]}}

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feature of Cisco IOS XE Software for Cisco ASR 1000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. \r\n\r This vulnerability is due to incorrect handling of certain IPv6 multicast packets when they are fanned out more than seven times on an affected device. An attacker could exploit this vulnerability by sending a specific IPv6 multicast or IPv6 multicast VPN (MVPNv6) packet through the affected device. A successful exploit could allow the attacker to cause a reload of the affected device, resulting in a DoS condition."}, {"lang": "es", "value": "Una vulnerabilidad en la funci\u00f3n Multicast Leaf Recycle Elimination (mLRE) del software Cisco IOS XE para los Routers de Servicios de Agregaci\u00f3n Cisco ASR serie 1000 podr\u00eda permitir que un atacante remoto no autenticado provoque que el dispositivo afectado se recargue, lo que resultar\u00eda en una condici\u00f3n de denegaci\u00f3n de servicio (DoS). Esta vulnerabilidad se debe al manejo incorrecto de ciertos paquetes de multidifusi\u00f3n IPv6 cuando se distribuyen m\u00e1s de siete veces en un dispositivo afectado. Un atacante podr\u00eda aprovechar esta vulnerabilidad enviando un paquete espec\u00edfico de multidifusi\u00f3n IPv6 o VPN de multidifusi\u00f3n IPv6 (MVPNv6) a trav\u00e9s del dispositivo afectado. Un exploit exitoso podr\u00eda permitir al atacante provocar una recarga del dispositivo afectado, lo que resultar\u00eda en una condici\u00f3n DoS."}], "id": "CVE-2023-20187", "lastModified": "2024-11-21T07:40:46.903", "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": "ykramarz@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": "2023-09-27T18:15:11.117", "references": [{"source": "ykramarz@cisco.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-mlre-H93FswRz"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-mlre-H93FswRz"}], "sourceIdentifier": "ykramarz@cisco.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-823"}], "source": "ykramarz@cisco.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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