{"id": "CVE-2024-20509", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "ykramarz@cisco.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.2}]}, "published": "2024-10-02T19:15:14.997", "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-meraki-mx-vpn-dos-by-QWUkqV7X", "tags": ["Vendor Advisory"], "source": "ykramarz@cisco.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "ykramarz@cisco.com", "description": [{"lang": "en", "value": "CWE-362"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-362"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could allow an unauthenticated, remote attacker to hijack an AnyConnect VPN session or cause a denial of service (DoS) condition for individual users of the AnyConnect VPN service on an affected device.\r\n\r\nThis vulnerability is due to weak entropy for handlers that are used during the VPN authentication process as well as a race condition that exists in the same process. An attacker could exploit this vulnerability by correctly guessing an authentication handler and then sending crafted HTTPS requests to an affected device. A successful exploit could allow the attacker to take over the AnyConnect VPN session from a target user or prevent the target user from establishing an AnyConnect VPN session with the affected device."}, {"lang": "es", "value": "Una vulnerabilidad en el servidor VPN de Cisco AnyConnect de los dispositivos Cisco Meraki MX y Cisco Meraki Z Series Teleworker Gateway podr\u00eda permitir que un atacante remoto no autenticado secuestre una sesi\u00f3n VPN de AnyConnect o provoque una condici\u00f3n de denegaci\u00f3n de servicio (DoS) para usuarios individuales del servicio VPN de AnyConnect en un dispositivo afectado. Esta vulnerabilidad se debe a una entrop\u00eda d\u00e9bil para los controladores que se utilizan durante el proceso de autenticaci\u00f3n de VPN, as\u00ed como a una condici\u00f3n de ejecuci\u00f3n que existe en el mismo proceso. Un atacante podr\u00eda aprovechar esta vulnerabilidad adivinando correctamente un controlador de autenticaci\u00f3n y luego enviando solicitudes HTTPS manipuladas a un dispositivo afectado. Una explotaci\u00f3n exitosa podr\u00eda permitir al atacante tomar el control de la sesi\u00f3n VPN de AnyConnect de un usuario objetivo o evitar que el usuario objetivo establezca una sesi\u00f3n VPN de AnyConnect con el dispositivo afectado."}], "lastModified": "2024-10-08T18:45:52.513", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:cisco:meraki_mx65_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B3C6574B-E879-4813-9516-93B41EBDFBD3", "versionEndExcluding": "18.211.2", "versionStartIncluding": "17.6.0"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:cisco:meraki_mx65:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "B3099A12-2D6F-4486-A690-1C809AF480B0"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:cisco:meraki_mx64_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "23FA0FF8-5926-4623-9348-4347331C5F3F", 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