{"id": "CVE-2021-34791", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "ykramarz@cisco.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "published": "2021-10-27T19:15:08.457", "references": [{"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-natalg-bypass-cpKGqkng", "tags": ["Vendor Advisory"], "source": "ykramarz@cisco.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-20"}]}, {"type": "Secondary", "source": "ykramarz@cisco.com", "description": [{"lang": "en", "value": "CWE-358"}]}], "descriptions": [{"lang": "en", "value": "Multiple vulnerabilities in the Application Level Gateway (ALG) for the Network Address Translation (NAT) feature of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass the ALG and open unauthorized connections with a host located behind the ALG. For more information about these vulnerabilities, see the Details section of this advisory. Note: These vulnerabilities have been publicly discussed as NAT Slipstreaming."}, {"lang": "es", "value": "Varias vulnerabilidades en la Puerta de Enlace de Nivel de Aplicaci\u00f3n (ALG) para la funcionalidad Network Address Translation (NAT) del software Cisco Adaptive Security Appliance (ASA) y el software Firepower Threat Defense (FTD) podr\u00edan permitir a un atacante remoto no autenticado omitir la ALG y abrir conexiones no autorizadas con un host situado detr\u00e1s de la ALG. Para conseguir m\u00e1s informaci\u00f3n sobre estas vulnerabilidades, consulte la secci\u00f3n Detalles de este aviso. Nota: Estas vulnerabilidades se han discutido p\u00fablicamente como NAT Slipstreaming"}], "lastModified": "2023-11-07T03:36:25.867", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8C7F329B-4EF5-411A-9AB6-02E6A4162D6D", "versionEndExcluding": "9.8.4.40"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FAE65CB5-08E5-41B6-9AC0-02451C90E833", "versionEndExcluding": "6.4.0.12"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "18589C74-19D2-44F0-AF26-68910E26655D", "versionEndExcluding": "6.6.5", "versionStartIncluding": "6.5.0"}, {"criteria": "cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FDDF492B-BC61-4814-B05F-3F6CD07080F7", "versionEndExcluding": "6.7.0.2", 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