{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-20446", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2023-11-08T15:08:07.678Z", "datePublished": "2024-08-28T16:31:32.514Z", "dateUpdated": "2024-08-28T18:49:32.927Z"}, "containers": {"cna": {"title": "Cisco NX-OS Software DHCPv6 Relay Agent Denial of Service Vulnerability", "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"}}], "descriptions": [{"lang": "en", "value": "A vulnerability in the DHCPv6 relay agent of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to improper handling of specific fields in a DHCPv6 RELAY-REPLY message. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to any IPv6 address that is configured on an affected device. A successful exploit could allow the attacker to cause the dhcp_snoop process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition."}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-dhcp6-relay-dos-znEAA6xn", "name": "cisco-sa-nxos-dhcp6-relay-dos-znEAA6xn"}], "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-nxos-dhcp6-relay-dos-znEAA6xn", "discovery": "EXTERNAL", "defects": ["CSCwk27906"]}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "NULL Pointer Dereference", "type": "cwe", "cweId": "CWE-476"}]}], "affected": [{"vendor": "Cisco", "product": "Cisco NX-OS Software", "versions": [{"version": "10.2(1)", "status": "affected"}, {"version": "10.2(1q)", "status": "affected"}, {"version": "9.3(9)", "status": "affected"}, {"version": "8.2(11)", "status": "affected"}], "defaultStatus": "unknown"}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2024-08-28T16:31:32.514Z"}}, "adp": [{"affected": [{"vendor": "cisco", "product": "nx-os", "cpes": ["cpe:2.3:o:cisco:nx-os:10.2\\(1\\):*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "10.2\\(1\\)", "status": "affected"}]}, {"vendor": "cisco", "product": "nx-os", "cpes": ["cpe:2.3:o:cisco:nx-os:10.2\\(1q\\):*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "10.2\\(1q\\)", "status": "affected"}]}, {"vendor": "cisco", "product": "nx-os", "cpes": ["cpe:2.3:o:cisco:nx-os:9.3\\(9\\):*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "9.3\\(9\\)", "status": "affected"}]}, {"vendor": "cisco", "product": "nx-os", "cpes": ["cpe:2.3:o:cisco:nx-os:8.2\\(11\\):*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "8.2\\(11\\)", "status": "affected"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-08-28T18:45:44.020456Z", "id": "CVE-2024-20446", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"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": "2024-08-28T18:49:32.927Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the DHCPv6 relay agent of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to improper handling of specific fields in a DHCPv6 RELAY-REPLY message. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to any IPv6 address that is configured on an affected device. A successful exploit could allow the attacker to cause the dhcp_snoop process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition."}, {"lang": "es", "value": "Una vulnerabilidad en el agente de retransmisi\u00f3n DHCPv6 de Cisco NX-OS Software podr\u00eda permitir que un atacante remoto no autenticado provoque una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad se debe a un manejo inadecuado de campos espec\u00edficos en un mensaje RELAY-REPLY de DHCPv6. Un atacante podr\u00eda aprovechar esta vulnerabilidad enviando un paquete DHCPv6 manipulado a cualquier direcci\u00f3n IPv6 que est\u00e9 configurada en un dispositivo afectado. Una explotaci\u00f3n exitosa podr\u00eda permitir que el atacante provoque que el proceso dhcp_snoop se bloquee y se reinicie varias veces, lo que hace que el dispositivo afectado se recargue y genere una condici\u00f3n de DoS."}], "id": "CVE-2024-20446", "lastModified": "2024-08-29T13:25:27.537", "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": "[email protected]", "type": "Secondary"}]}, "published": "2024-08-28T17:15:09.997", "references": [{"source": "[email protected]", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-dhcp6-relay-dos-znEAA6xn"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "[email protected]", "type": "Secondary"}]}

{}