A vulnerability in the TLS handler of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 1000 Series firewalls could allow an unauthenticated, remote attacker to gain access to sensitive information. 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
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Affected Vendors & Products
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History
Wed, 13 Nov 2024 18:15:00 +0000
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MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2020-10-21T18:37:03.053926Z
Updated: 2024-11-13T17:47:47.904Z
Reserved: 2019-12-12T00:00:00
Link: CVE-2020-3585
Vulnrichment
Updated: 2024-08-04T07:37:55.574Z
NVD
Status : Modified
Published: 2020-10-21T19:15:18.967
Modified: 2023-11-07T03:22:57.480
Link: CVE-2020-3585
Redhat
No data.