CVE-2020-3585

Published Oct 21, 2020

Last updated a year ago

CVSS low 3.7

Overview

Description: 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
Source: ykramarz@cisco.com
NVD status: Modified

Risk scores

CVSS 3.1

Type: Primary
Base score: 3.7
Impact score: 1.4
Exploitability score: 2.2
Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Severity: LOW

CVSS 2.0

Type: Primary
Base score: 4.3
Impact score: 2.9
Exploitability score: 8.6
Vector string: AV:N/AC:M/Au:N/C:P/I:N/A:N

Weaknesses

nvd@nist.gov: CWE-203
ykramarz@cisco.com: CWE-203

Hype score: Not currently trending

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"
  }
]

Overview

Risk scores

CVSS 3.1

CVSS 2.0

Weaknesses

Social media

Configurations

References