CVE-2019-12677

{"id": "CVE-2019-12677", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "authentication": "SINGLE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Secondary", "source": "ykramarz@cisco.com", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 7.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 3.1}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2019-10-02T19:15:12.327", "references": [{"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-asa-ssl-vpn-dos", "tags": ["Vendor Advisory"], "source": "ykramarz@cisco.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-755"}]}, {"type": "Secondary", "source": "ykramarz@cisco.com", "description": [{"lang": "en", "value": "CWE-172"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability in the Secure Sockets Layer (SSL) VPN feature of Cisco Adaptive Security Appliance (ASA) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition that prevents the creation of new SSL/Transport Layer Security (TLS) connections to an affected device. The vulnerability is due to incorrect handling of Base64-encoded strings. An attacker could exploit this vulnerability by opening many SSL VPN sessions to an affected device. The attacker would need to have valid user credentials on the affected device to exploit this vulnerability. A successful exploit could allow the attacker to overwrite a special system memory location, which will eventually result in memory allocation errors for new SSL/TLS sessions to the device, preventing successful establishment of these sessions. A reload of the device is required to recover from this condition. Established SSL/TLS connections to the device and SSL/TLS connections through the device are not affected. Note: Although this vulnerability is in the SSL VPN feature, successful exploitation of this vulnerability would affect all new SSL/TLS sessions to the device, including management sessions."}, {"lang": "es", "value": "Una vulnerabilidad en la funcionalidad VPN Secure Sockets Layer (SSL) del Software Cisco Adaptive Security Appliance (ASA), podr\u00eda permitir a un atacante remoto autenticado causar una condici\u00f3n de denegaci\u00f3n de servicio (DoS) que impide la creaci\u00f3n de nuevas conexiones SSL/Transport Layer Security (TLS) en un dispositivo afectado. La vulnerabilidad es debido al manejo incorrecto de las cadenas codificadas en Base64. Un atacante podr\u00eda explotar esta vulnerabilidad al abrir muchas sesiones VPN SSL en un dispositivo afectado. El atacante necesitar\u00eda tener credenciales de usuario v\u00e1lidas sobre el dispositivo afectado para explotar esta vulnerabilidad. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante sobrescribir una ubicaci\u00f3n especial de memoria del sistema, lo que eventualmente resulta en errores de asignaci\u00f3n de memoria para nuevas sesiones SSL/TLS en el dispositivo, impidiendo el establecimiento con \u00e9xito de estas sesiones. Se requiere una recarga del dispositivo para recuperarse de esta condici\u00f3n. Las conexiones SSL/TLS establecidas en el dispositivo y las conexiones SSL/TLS por medio del dispositivo no est\u00e1n afectadas. Nota: Aunque esta vulnerabilidad se encuentra en la funcionalidad VPN SSL, la explotaci\u00f3n con \u00e9xito de esta vulnerabilidad afectar\u00eda todas las nuevas sesiones SSL/TLS en el dispositivo, incluidas las sesiones de administraci\u00f3n."}], "lastModified": "2023-08-16T16:17:07.960", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4D7468AA-4332-41CC-9B7D-C16CDF45522F", "versionEndExcluding": "9.3.3.9", "versionStartIncluding": "9.3"}, {"criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D31DCDFF-F5DE-479C-B5CE-C5BC05570DE5", "versionEndExcluding": "9.1.7.4"}, {"criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E0AA239B-A459-4F22-8CB2-BB3AC5AB205F", "versionEndExcluding": "9.2.4.8", "versionStartIncluding": "9.2"}, {"criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "28D669B7-695E-4B16-9000-3BA54084393F", "versionEndExcluding": "9.4.2.11", "versionStartIncluding": "9.4"}, {"criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA315858-6E07-49CE-A3C7-B4CEBE1A96AD", "versionEndExcluding": "9.5.2.5", "versionStartIncluding": "9.5"}, {"criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A4BA9724-957D-4E67-9C3F-9FCE199B1DA4", "versionEndExcluding": "9.6.2", "versionStartIncluding": "9.6"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:cisco:asa_5505:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "8E6A8BB7-2000-4CA2-9DD7-89573CE4C73A"}, {"criteria": "cpe:2.3:h:cisco:asa_5510:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "B091B9BA-D4CA-435B-8D66-602B45F0E0BD"}, {"criteria": "cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "08F0F160-DAD2-48D4-B7B2-4818B2526F35"}, {"criteria": "cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "977D597B-F6DE-4438-AB02-06BE64D71EBE"}, {"criteria": "cpe:2.3:h:cisco:asa_5520:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "2B387F62-6341-434D-903F-9B72E7F84ECB"}, {"criteria": "cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "EB71EB29-0115-4307-A9F7-262394FD9FB0"}, {"criteria": "cpe:2.3:h:cisco:asa_5550:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "E6287D95-F564-44B7-A0F9-91396D7C2C4E"}, {"criteria": "cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "5535C936-391B-4619-AA03-B35265FC15D7"}, {"criteria": "cpe:2.3:h:cisco:asa_5580:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "D1E828B8-5ECC-4A09-B2AD-DEDC558713DE"}, {"criteria": "cpe:2.3:h:cisco:asa_5585-x:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "16AE20C2-C77E-4E04-BF13-A48696E52426"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "ykramarz@cisco.com"}