CVE-2024-20446

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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "Cisco NX-OS Software", "vendor": "Cisco", "versions": [{"status": "affected", "version": "10.2(1)"}, {"status": "affected", "version": "10.2(1q)"}, {"status": "affected", "version": "9.3(9)"}, {"status": "affected", "version": "8.2(11)"}]}], "source": "psirt@cisco.com"}, {"affectedData": [{"cpes": ["cpe:2.3:o:cisco:nx-os:10.2\\(1\\):*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "nx-os", "vendor": "cisco", "versions": [{"status": "affected", "version": "10.2\\(1\\)"}]}, {"cpes": ["cpe:2.3:o:cisco:nx-os:10.2\\(1q\\):*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "nx-os", "vendor": "cisco", "versions": [{"status": "affected", "version": "10.2\\(1q\\)"}]}, {"cpes": ["cpe:2.3:o:cisco:nx-os:9.3\\(9\\):*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "nx-os", "vendor": "cisco", "versions": [{"status": "affected", "version": "9.3\\(9\\)"}]}, {"cpes": ["cpe:2.3:o:cisco:nx-os:8.2\\(11\\):*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "nx-os", "vendor": "cisco", "versions": [{"status": "affected", "version": "8.2\\(11\\)"}]}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "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": "2026-06-17T07:07:07.190", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-20446", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-08-28T18:45:44.020456Z", "version": "2.0.3"}}]}, "published": "2024-08-28T17:15:09.997", "references": [{"source": "psirt@cisco.com", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-dhcp6-relay-dos-znEAA6xn"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "psirt@cisco.com", "type": "Secondary"}]}

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