Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2020-3585

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

Published

2020-10-21T19:15:18.967

Last Modified

2024-11-21T05:31:21.627

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:N/A:N

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: NONE
Exploitability Score

8.6

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-203
  • Type: Primary
    CWE-203
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco firepower_threat_defense < 6.4.0.10 Yes
Operating System cisco firepower_threat_defense < 6.5.0.5 Yes
Operating System cisco firepower_threat_defense < 6.6.1 Yes
Hardware cisco firepower_1000 - No
Hardware cisco firepower_1010 - No
Hardware cisco firepower_1120 - No
Hardware cisco firepower_1140 - No
Hardware cisco firepower_1150 - No
Operating System cisco adaptive_security_appliance_software < 9.13.1.13 Yes
Operating System cisco adaptive_security_appliance_software < 9.14.1.30 Yes
Hardware cisco firepower_1000 - No
Hardware cisco firepower_1010 - No
Hardware cisco firepower_1120 - No
Hardware cisco firepower_1140 - No
Hardware cisco firepower_1150 - No
References