CVE-2022-20940
Vulnerability from cvelistv5
Published
2022-11-10 17:38
Modified
2024-08-03 02:31
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
A vulnerability in the TLS handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to gain access to sensitive information. This vulnerability is due to improper implementation of countermeasures against a Bleichenbacher attack on a device that uses SSL decryption policies. An attacker could exploit this vulnerability by sending crafted TLS messages to an affected 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.
References
ykramarz@cisco.comhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-tls-bb-rCgtmY2
Impacted products
CiscoCisco Firepower Threat Defense Software
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T02:31:58.809Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "cisco-sa-ftd-tls-bb-rCgtmY2",
            "tags": [
              "x_transferred"
            ],
            "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-tls-bb-rCgtmY2"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco Firepower Threat Defense Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "6.2.3"
            },
            {
              "status": "affected",
              "version": "6.2.3.1"
            },
            {
              "status": "affected",
              "version": "6.2.3.2"
            },
            {
              "status": "affected",
              "version": "6.2.3.3"
            },
            {
              "status": "affected",
              "version": "6.2.3.4"
            },
            {
              "status": "affected",
              "version": "6.2.3.5"
            },
            {
              "status": "affected",
              "version": "6.2.3.6"
            },
            {
              "status": "affected",
              "version": "6.2.3.7"
            },
            {
              "status": "affected",
              "version": "6.2.3.8"
            },
            {
              "status": "affected",
              "version": "6.2.3.10"
            },
            {
              "status": "affected",
              "version": "6.2.3.11"
            },
            {
              "status": "affected",
              "version": "6.2.3.9"
            },
            {
              "status": "affected",
              "version": "6.2.3.12"
            },
            {
              "status": "affected",
              "version": "6.2.3.13"
            },
            {
              "status": "affected",
              "version": "6.2.3.14"
            },
            {
              "status": "affected",
              "version": "6.2.3.15"
            },
            {
              "status": "affected",
              "version": "6.2.3.16"
            },
            {
              "status": "affected",
              "version": "6.2.3.17"
            },
            {
              "status": "affected",
              "version": "6.2.3.18"
            },
            {
              "status": "affected",
              "version": "6.6.0"
            },
            {
              "status": "affected",
              "version": "6.6.0.1"
            },
            {
              "status": "affected",
              "version": "6.6.1"
            },
            {
              "status": "affected",
              "version": "6.6.3"
            },
            {
              "status": "affected",
              "version": "6.6.4"
            },
            {
              "status": "affected",
              "version": "6.6.5"
            },
            {
              "status": "affected",
              "version": "6.6.5.1"
            },
            {
              "status": "affected",
              "version": "6.6.5.2"
            },
            {
              "status": "affected",
              "version": "6.4.0"
            },
            {
              "status": "affected",
              "version": "6.4.0.1"
            },
            {
              "status": "affected",
              "version": "6.4.0.3"
            },
            {
              "status": "affected",
              "version": "6.4.0.2"
            },
            {
              "status": "affected",
              "version": "6.4.0.4"
            },
            {
              "status": "affected",
              "version": "6.4.0.5"
            },
            {
              "status": "affected",
              "version": "6.4.0.6"
            },
            {
              "status": "affected",
              "version": "6.4.0.7"
            },
            {
              "status": "affected",
              "version": "6.4.0.8"
            },
            {
              "status": "affected",
              "version": "6.4.0.9"
            },
            {
              "status": "affected",
              "version": "6.4.0.10"
            },
            {
              "status": "affected",
              "version": "6.4.0.11"
            },
            {
              "status": "affected",
              "version": "6.4.0.12"
            },
            {
              "status": "affected",
              "version": "6.4.0.13"
            },
            {
              "status": "affected",
              "version": "6.4.0.14"
            },
            {
              "status": "affected",
              "version": "6.7.0"
            },
            {
              "status": "affected",
              "version": "6.7.0.1"
            },
            {
              "status": "affected",
              "version": "6.7.0.2"
            },
            {
              "status": "affected",
              "version": "6.7.0.3"
            },
            {
              "status": "affected",
              "version": "7.0.0"
            },
            {
              "status": "affected",
              "version": "7.0.0.1"
            },
            {
              "status": "affected",
              "version": "7.0.1"
            },
            {
              "status": "affected",
              "version": "7.0.1.1"
            },
            {
              "status": "affected",
              "version": "7.0.2"
            },
            {
              "status": "affected",
              "version": "7.0.2.1"
            },
            {
              "status": "affected",
              "version": "7.0.3"
            },
            {
              "status": "affected",
              "version": "7.1.0"
            },
            {
              "status": "affected",
              "version": "7.1.0.1"
            },
            {
              "status": "affected",
              "version": "7.1.0.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the TLS handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to gain access to sensitive information.\r\n\r This vulnerability is due to improper implementation of countermeasures against a Bleichenbacher attack on a device that uses SSL decryption policies. An attacker could exploit this vulnerability by sending crafted TLS messages to an affected 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."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-203",
              "description": "Observable Discrepancy",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-01-25T16:57:17.707Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-ftd-tls-bb-rCgtmY2",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-tls-bb-rCgtmY2"
        }
      ],
      "source": {
        "advisory": "cisco-sa-ftd-tls-bb-rCgtmY2",
        "defects": [
          "CSCwa41936"
        ],
        "discovery": "EXTERNAL"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2022-20940",
    "datePublished": "2022-11-10T17:38:07.193Z",
    "dateReserved": "2021-11-02T13:28:29.193Z",
    "dateUpdated": "2024-08-03T02:31:58.809Z",
    "requesterUserId": "4087f8c1-b21c-479b-99df-de23cb76b743",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-20940\",\"sourceIdentifier\":\"ykramarz@cisco.com\",\"published\":\"2022-11-15T21:15:34.650\",\"lastModified\":\"2024-01-25T17:15:20.583\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the TLS handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to gain access to sensitive information.\\r\\n\\r This vulnerability is due to improper implementation of countermeasures against a Bleichenbacher attack on a device that uses SSL decryption policies. An attacker could exploit this vulnerability by sending crafted TLS messages to an affected 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.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad en el controlador TLS del software Cisco Firepower Threat Defense (FTD) podr\u00eda permitir que un atacante remoto no autenticado obtenga acceso a informaci\u00f3n confidencial. Esta vulnerabilidad se debe a la implementaci\u00f3n inadecuada de contramedidas contra un ataque Bleichenbacher en un dispositivo que utiliza pol\u00edticas de descifrado SSL. Un atacante podr\u00eda aprovechar esta vulnerabilidad enviando mensajes TLS manipulados a un dispositivo afectado, lo que actuar\u00eda como un or\u00e1culo y permitir\u00eda al atacante llevar a cabo un ataque de texto cifrado elegido. Un exploit exitoso podr\u00eda permitir al atacante realizar operaciones criptoanal\u00edticas que podr\u00edan permitir el descifrado de sesiones TLS previamente capturadas en el dispositivo afectado.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4},{\"source\":\"ykramarz@cisco.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-203\"}]},{\"source\":\"ykramarz@cisco.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-203\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2.3\",\"versionEndIncluding\":\"6.2.3.18\",\"matchCriteriaId\":\"D58D7217-F6F5-4B58-B59C-E5C8781C87A9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.3.0\",\"versionEndIncluding\":\"6.3.0.5\",\"matchCriteriaId\":\"EDE0C110-518D-4E51-BCEB-F4E9FC448278\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.4.0\",\"versionEndIncluding\":\"6.4.0.14\",\"matchCriteriaId\":\"C3D91A5E-EAB7-4E45-A2CE-09BAD45414D4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.5.0\",\"versionEndIncluding\":\"6.5.0.5\",\"matchCriteriaId\":\"171E1C5D-68C5-4BBC-AE18-D1518A1B7277\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7.0\",\"versionEndIncluding\":\"6.7.0.3\",\"matchCriteriaId\":\"1110632C-526F-4025-A7BE-0CF9F37E5F9E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.0.0\",\"versionEndIncluding\":\"7.0.3\",\"matchCriteriaId\":\"89DFD86B-768D-4301-92DB-B73C14255123\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:6.6.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DCD69468-8067-4A5D-B2B0-EC510D889AA0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:6.6.0.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"20AE4051-FA3B-4F0B-BD3D-083A14269FF6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:6.6.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"46A42D07-FF3E-41B4-BA39-3A5BDA4E0E61\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:6.6.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"3985EA37-2B77-45F2-ABA5-5CCC7B35CA2E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:6.6.4:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"67FB5ABE-3C40-4C58-B91F-0621C2180FAC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:6.6.5:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"53909FD6-EC74-4D2F-99DA-26E70400B53F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:6.6.5.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"55FE024D-0D43-40AD-9645-8C54ECF17824\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:6.6.5.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"EC411A8D-CD39-46F5-B8FC-6753E618FAEC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B7533780-0DF9-41BE-8455-F60676785689\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"469EA365-DED5-4436-AAC2-5553529DE700\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4D94F400-5A35-41F5-B37F-E9DA6F87ED8E\"}]}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-tls-bb-rCgtmY2\",\"source\":\"ykramarz@cisco.com\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.