{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"cveId": "CVE-2024-20321", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2023-11-08T15:08:07.640Z", "datePublished": "2024-02-28T16:14:28.992Z", "dateUpdated": "2024-02-28T16:14:28.992Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2024-02-28T16:14:28.992Z"}, "descriptions": [{"lang": "en", "value": "A vulnerability in the External Border Gateway Protocol (eBGP) implementation 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 This vulnerability exists because eBGP traffic is mapped to a shared hardware rate-limiter queue. An attacker could exploit this vulnerability by sending large amounts of network traffic with certain characteristics through an affected device. A successful exploit could allow the attacker to cause eBGP neighbor sessions to be dropped, leading to a DoS condition in the network."}], "affected": [{"vendor": "Cisco", "product": "Cisco NX-OS Software", "versions": [{"version": "7.0(3)F1(1)", "status": "affected"}, {"version": "7.0(3)F2(1)", "status": "affected"}, {"version": "7.0(3)F2(2)", "status": "affected"}, {"version": "7.0(3)F3(1)", "status": "affected"}, {"version": "7.0(3)F3(2)", "status": "affected"}, {"version": "7.0(3)F3(3)", "status": "affected"}, {"version": "7.0(3)F3(3a)", "status": "affected"}, {"version": "7.0(3)F3(4)", "status": "affected"}, {"version": "7.0(3)F3(3c)", "status": "affected"}, {"version": "7.0(3)F3(5)", "status": "affected"}, {"version": "9.2(1)", "status": "affected"}, {"version": "9.2(2)", "status": "affected"}, {"version": "9.2(2t)", "status": "affected"}, {"version": "9.2(3)", "status": "affected"}, {"version": "9.2(4)", "status": "affected"}, {"version": "9.2(2v)", "status": "affected"}, {"version": "9.3(1)", "status": "affected"}, {"version": "9.3(2)", "status": "affected"}, {"version": "9.3(3)", "status": "affected"}, {"version": "9.3(4)", "status": "affected"}, {"version": "9.3(5)", "status": "affected"}, {"version": "9.3(6)", "status": "affected"}, {"version": "9.3(7)", "status": "affected"}, {"version": "9.3(7a)", "status": "affected"}, {"version": "9.3(8)", "status": "affected"}, {"version": "9.3(9)", "status": "affected"}, {"version": "9.3(10)", "status": "affected"}, {"version": "9.3(11)", "status": "affected"}, {"version": "9.3(12)", "status": "affected"}, {"version": "10.1(1)", "status": "affected"}, {"version": "10.1(2)", "status": "affected"}, {"version": "10.1(2t)", "status": "affected"}, {"version": "10.2(1)", "status": "affected"}, {"version": "10.2(1q)", "status": "affected"}, {"version": "10.2(2)", "status": "affected"}, {"version": "10.2(3)", "status": "affected"}, {"version": "10.2(3t)", "status": "affected"}, {"version": "10.2(4)", "status": "affected"}, {"version": "10.2(5)", "status": "affected"}, {"version": "10.2(3v)", "status": "affected"}, {"version": "10.2(6)", "status": "affected"}, {"version": "10.3(1)", "status": "affected"}, {"version": "10.3(2)", "status": "affected"}, {"version": "10.3(3)", "status": "affected"}, {"version": "10.3(99w)", "status": "affected"}, {"version": "10.3(99x)", "status": "affected"}, {"version": "10.3(4a)", "status": "affected"}, {"version": "10.4(1)", "status": "affected"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Uncontrolled Resource Consumption", "type": "cwe", "cweId": "CWE-400"}]}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ebgp-dos-L3QCwVJ", "name": "cisco-sa-nxos-ebgp-dos-L3QCwVJ"}], "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-nxos-ebgp-dos-L3QCwVJ", "discovery": "INTERNAL", "defects": ["CSCwh09703", "CSCwh96478"]}}}}

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An attacker could exploit this vulnerability by sending large amounts of network traffic with certain characteristics through an affected device. A successful exploit could allow the attacker to cause eBGP neighbor sessions to be dropped, leading to a DoS condition in the network."}, {"lang": "es", "value": "Una vulnerabilidad en la implementaci\u00f3n del protocolo de puerta de enlace de frontera externa (eBGP) del software Cisco NX-OS 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 existe porque el tr\u00e1fico eBGP est\u00e1 asignado a una cola limitadora de velocidad de hardware compartida. Un atacante podr\u00eda aprovechar esta vulnerabilidad enviando grandes cantidades de tr\u00e1fico de red con determinadas caracter\u00edsticas a trav\u00e9s de un dispositivo afectado. Un exploit exitoso podr\u00eda permitir al atacante provocar la ca\u00edda de las sesiones vecinas de eBGP, lo que provocar\u00eda una condici\u00f3n DoS en la red."}], "id": "CVE-2024-20321", "lastModified": "2024-03-04T22:45:23.647", "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": "nvd@nist.gov", "type": "Primary"}, {"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"}]}, "published": "2024-02-29T01:43:59.410", "references": [{"source": "ykramarz@cisco.com", "tags": ["Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ebgp-dos-L3QCwVJ"}], "sourceIdentifier": "ykramarz@cisco.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-400"}], "source": "ykramarz@cisco.com", "type": "Secondary"}]}

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