CVE-2020-3585

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The vulnerability is due to improper implementation of countermeasures against the Bleichenbacher attack for cipher suites that rely on RSA for key exchange. An attacker could exploit this vulnerability by sending crafted TLS messages to the device, which would act as an oracle and allow the attacker to carry out a chosen-ciphertext attack. A successful exploit could allow the attacker to perform cryptanalytic operations that may allow decryption of previously captured TLS sessions to the affected device. To exploit this vulnerability, an attacker must be able to perform both of the following actions: Capture TLS traffic that is in transit between clients and the affected device Actively establish a considerable number of TLS connections to the affected device"}, {"lang": "es", "value": "Una vulnerabilidad en el manejador TLS de Cisco Adaptive Security Appliance (ASA) Software y Cisco Firepower Threat Defense (FTD) Software para los firewalls Cisco Firepower 1000 Series, podr\u00eda permitir a un atacante remoto no autenticado obtener acceso a informaci\u00f3n confidencial. La vulnerabilidad es debido a una implementaci\u00f3n inapropiada de contramedidas contra el ataque Bleichenbacher para conjuntos de cifrado que dependen de RSA para el intercambio de claves. Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de mensajes TLS dise\u00f1ados hacia el dispositivo, que actuar\u00eda como un or\u00e1culo y permitir\u00eda a un atacante conducir un ataque de texto cifrado elegido. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir a un atacante realizar operaciones criptoanal\u00edticas que podr\u00edan habilitar el descifrado de sesiones TLS capturadas previamente en el dispositivo afectado. Para aprovechar esta vulnerabilidad, un atacante necesita ser capaz de realizar ambas de las siguientes acciones: Capturar el tr\u00e1fico TLS que esta en transito entre clientes y el dispositivo afectado que establece Activamente un n\u00famero considerable de conexiones TLS hacia el dispositivo afectado"}], "lastModified": "2023-11-07T03:22:57.480", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "07C5999A-6647-424E-A093-60D36561ACE7", "versionEndExcluding": "6.4.0.10"}, {"criteria": "cpe:2.3:o:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "38DCBF6C-AA34-4A5B-B2B1-57684DD5BB42", "versionEndExcluding": "6.5.0.5", "versionStartIncluding": "6.5.0"}, {"criteria": "cpe:2.3:o:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3F0C6D76-9652-4EE6-9CA2-96BFBB469539", "versionEndExcluding": "6.6.1", "versionStartIncluding": "6.6.0"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:cisco:firepower_1000:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "E6F79864-CA70-4192-AC2C-E174DF3F25B2"}, {"criteria": "cpe:2.3:h:cisco:firepower_1010:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "7FFE3880-4B85-4E23-9836-70875D5109F7"}, {"criteria": "cpe:2.3:h:cisco:firepower_1120:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "727A02E8-40A1-4DFE-A3A2-91D628D3044F"}, {"criteria": "cpe:2.3:h:cisco:firepower_1140:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "19F6546E-28F4-40DC-97D6-E0E023FE939B"}, {"criteria": "cpe:2.3:h:cisco:firepower_1150:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "EB3B0EC3-4654-4D90-9D41-7EC2AD1DDF99"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6BB7D8DC-2652-4108-8574-12C4AFF0B93C", "versionEndExcluding": "9.13.1.13"}, {"criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A5E49F5A-F8E9-4D0D-A58F-9F5BB5F0C9EE", "versionEndExcluding": "9.14.1.30", "versionStartIncluding": "9.14"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:cisco:firepower_1000:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "E6F79864-CA70-4192-AC2C-E174DF3F25B2"}, {"criteria": "cpe:2.3:h:cisco:firepower_1010:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "7FFE3880-4B85-4E23-9836-70875D5109F7"}, {"criteria": "cpe:2.3:h:cisco:firepower_1120:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "727A02E8-40A1-4DFE-A3A2-91D628D3044F"}, {"criteria": "cpe:2.3:h:cisco:firepower_1140:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "19F6546E-28F4-40DC-97D6-E0E023FE939B"}, {"criteria": "cpe:2.3:h:cisco:firepower_1150:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "EB3B0EC3-4654-4D90-9D41-7EC2AD1DDF99"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "ykramarz@cisco.com"}