{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-20406", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2023-11-08T15:08:07.661Z", "datePublished": "2024-09-11T16:38:50.133Z", "dateUpdated": "2024-09-11T20:38:41.758Z"}, "containers": {"cna": {"title": "Cisco IOS XR Software Intermediate System-to-Intermediate System Denial of Service Vulnerability", "metrics": [{"format": "cvssV3_1", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "baseScore": 7.4, "baseSeverity": "HIGH", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}}], "descriptions": [{"lang": "en", "value": "A vulnerability in the segment routing feature for the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to insufficient input validation of ingress IS-IS packets. An attacker could exploit this vulnerability by sending specific IS-IS packets to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the IS-IS process on all affected devices that are participating in the Flexible Algorithm to crash and restart, resulting in a DoS condition.\r\nNote: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and must have formed an adjacency. This vulnerability affects segment routing for IS-IS over IPv4 and IPv6 control planes as well as devices that are configured as level 1, level 2, or multi-level routing IS-IS type."}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-isis-xehpbVNe", "name": "cisco-sa-isis-xehpbVNe"}], "exploits": [{"lang": "en", "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}], "source": {"advisory": "cisco-sa-isis-xehpbVNe", "discovery": "EXTERNAL", "defects": ["CSCwi39542"]}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Input Validation", "type": "cwe", "cweId": "CWE-20"}]}], "affected": [{"vendor": "Cisco", "product": "Cisco IOS XR Software", "versions": [{"version": "7.4.1", "status": "affected"}, {"version": "6.8.1", "status": "affected"}, {"version": "7.4.15", "status": "affected"}, {"version": "7.5.1", "status": "affected"}, {"version": "7.4.16", "status": "affected"}, {"version": "7.6.1", "status": "affected"}, {"version": "7.5.2", "status": "affected"}, {"version": "7.8.1", "status": "affected"}, {"version": "7.6.15", "status": "affected"}, {"version": "7.5.12", "status": "affected"}, {"version": "7.7.1", "status": "affected"}, {"version": "6.8.2", "status": "affected"}, {"version": "7.4.2", "status": "affected"}, {"version": "6.9.1", "status": "affected"}, {"version": "7.6.2", "status": "affected"}, {"version": "7.5.3", "status": "affected"}, {"version": "7.7.2", "status": "affected"}, {"version": "6.9.2", "status": "affected"}, {"version": "7.9.1", "status": "affected"}, {"version": "7.10.1", "status": "affected"}, {"version": "7.8.2", "status": "affected"}, {"version": "7.5.4", "status": "affected"}, {"version": "7.8.22", "status": "affected"}, {"version": "7.7.21", "status": "affected"}, {"version": "7.9.2", "status": "affected"}, {"version": "7.5.5", "status": "affected"}, {"version": "7.11.1", "status": "affected"}, {"version": "7.9.21", "status": "affected"}, {"version": "7.10.2", "status": "affected"}, {"version": "7.6.3", "status": "affected"}], "defaultStatus": "unknown"}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2024-09-11T16:38:50.133Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-09-11T20:38:32.503942Z", "id": "CVE-2024-20406", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T20:38:41.758Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-20406", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-11T20:38:32.503942Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T20:38:38.591Z"}}], "cna": {"title": "Cisco IOS XR Software Intermediate System-to-Intermediate System Denial of Service Vulnerability", "source": {"defects": ["CSCwi39542"], "advisory": "cisco-sa-isis-xehpbVNe", "discovery": "EXTERNAL"}, "metrics": [{"format": "cvssV3_1", "cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "Cisco", "product": "Cisco IOS XR Software", "versions": [{"status": "affected", "version": "7.4.1"}, {"status": "affected", "version": "6.8.1"}, {"status": "affected", "version": "7.4.15"}, {"status": "affected", "version": "7.5.1"}, {"status": "affected", "version": "7.4.16"}, {"status": "affected", "version": "7.6.1"}, {"status": "affected", "version": "7.5.2"}, {"status": "affected", "version": "7.8.1"}, {"status": "affected", "version": "7.6.15"}, {"status": "affected", "version": "7.5.12"}, {"status": "affected", "version": "7.7.1"}, {"status": "affected", "version": "6.8.2"}, {"status": "affected", "version": "7.4.2"}, {"status": "affected", "version": "6.9.1"}, {"status": "affected", "version": "7.6.2"}, {"status": "affected", "version": "7.5.3"}, {"status": "affected", "version": "7.7.2"}, {"status": "affected", "version": "6.9.2"}, {"status": "affected", "version": "7.9.1"}, {"status": "affected", "version": "7.10.1"}, {"status": "affected", "version": "7.8.2"}, {"status": "affected", "version": "7.5.4"}, {"status": "affected", "version": "7.8.22"}, {"status": "affected", "version": "7.7.21"}, {"status": "affected", "version": "7.9.2"}, {"status": "affected", "version": "7.5.5"}, {"status": "affected", "version": "7.11.1"}, {"status": "affected", "version": "7.9.21"}, {"status": "affected", "version": "7.10.2"}, {"status": "affected", "version": "7.6.3"}], "defaultStatus": "unknown"}], "exploits": [{"lang": "en", "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-isis-xehpbVNe", "name": "cisco-sa-isis-xehpbVNe"}], "descriptions": [{"lang": "en", "value": "A vulnerability in the segment routing feature for the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to insufficient input validation of ingress IS-IS packets. An attacker could exploit this vulnerability by sending specific IS-IS packets to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the IS-IS process on all affected devices that are participating in the Flexible Algorithm to crash and restart, resulting in a DoS condition.\r\nNote: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and must have formed an adjacency. This vulnerability affects segment routing for IS-IS over IPv4 and IPv6 control planes as well as devices that are configured as level 1, level 2, or multi-level routing IS-IS type."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "cwe", "cweId": "CWE-20", "description": "Improper Input Validation"}]}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2024-09-11T16:38:50.133Z"}}}, "cveMetadata": {"cveId": "CVE-2024-20406", "state": "PUBLISHED", "dateUpdated": "2024-09-11T20:38:41.758Z", "dateReserved": "2023-11-08T15:08:07.661Z", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "datePublished": "2024-09-11T16:38:50.133Z", "assignerShortName": "cisco"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*", "matchCriteriaId": "A21D4B88-10AE-4726-9D00-48CF36068409", "versionEndExcluding": "7.0.0", "versionStartIncluding": "6.8.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*", "matchCriteriaId": "6BB02B4B-AC47-4DFF-BB0F-AD0F2D12866B", "versionEndExcluding": "7.11.2", "versionStartIncluding": "7.4.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the segment routing feature for the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to insufficient input validation of ingress IS-IS packets. An attacker could exploit this vulnerability by sending specific IS-IS packets to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the IS-IS process on all affected devices that are participating in the Flexible Algorithm to crash and restart, resulting in a DoS condition.\r\nNote: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and must have formed an adjacency. This vulnerability affects segment routing for IS-IS over IPv4 and IPv6 control planes as well as devices that are configured as level 1, level 2, or multi-level routing IS-IS type."}, {"lang": "es", "value": "Una vulnerabilidad en la funci\u00f3n de enrutamiento de segmentos para el protocolo de sistema intermedio a sistema intermedio (IS-IS) del software Cisco IOS XR podr\u00eda permitir que un atacante adyacente no autenticado provoque una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad se debe a una validaci\u00f3n de entrada insuficiente de los paquetes IS-IS de entrada. Un atacante podr\u00eda aprovechar esta vulnerabilidad enviando paquetes IS-IS espec\u00edficos a un dispositivo afectado despu\u00e9s de formar una adyacencia. Una explotaci\u00f3n exitosa podr\u00eda permitir que el atacante provoque que el proceso IS-IS en todos los dispositivos afectados que participan en el algoritmo flexible se bloquee y se reinicie, lo que da como resultado una condici\u00f3n de DoS. Nota: El protocolo IS-IS es un protocolo de enrutamiento. Para aprovechar esta vulnerabilidad, un atacante debe estar adyacente a la capa 2 del dispositivo afectado y debe haber formado una adyacencia. Esta vulnerabilidad afecta al enrutamiento de segmentos para IS-IS sobre planos de control IPv4 e IPv6, as\u00ed como a dispositivos que est\u00e1n configurados como tipo IS-IS de enrutamiento de nivel 1, nivel 2 o multinivel."}], "id": "CVE-2024-20406", "lastModified": "2024-10-07T17:56:43.103", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.0, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.0, "source": "ykramarz@cisco.com", "type": "Secondary"}]}, "published": "2024-09-11T17:15:13.040", "references": [{"source": "ykramarz@cisco.com", "tags": ["Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-isis-xehpbVNe"}], "sourceIdentifier": "ykramarz@cisco.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-20"}], "source": "ykramarz@cisco.com", "type": "Secondary"}]}

{}