{
  "id": "CVE-2020-14199",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2020-06-16T18:15:17.137",
  "lastModified": "2020-06-23T18:33:16.883",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "BIP-143 in the Bitcoin protocol specification mishandles the signing of a Segwit transaction, which allows attackers to trick a user into making two signatures in certain cases, potentially leading to a huge transaction fee. NOTE: this affects all hardware wallets. It was fixed in 1.9.1 for the Trezor One and 2.3.1 for the Trezor Model T."
    },
    {
      "lang": "es",
      "value": "BIP-143 en la especificaci\u00f3n del protocolo Bitcoin maneja inapropiadamente la firma de una transacci\u00f3n Segwit, lo que permite a atacantes enga\u00f1ar a un usuario para que haga dos firmas en determinados casos, lo que puede generar una enorme tarifa de transacci\u00f3n. NOTA: Esto afecta a todas las billeteras de hardware. Se corrigi\u00f3 en la versi\u00f3n 1.9.1 para Trezor One y versi\u00f3n 2.3.1 para Trezor Model T"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE",
          "baseScore": 4.3
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ]
    }
  ],
  "configurations": [
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:satoshilabs:trezor_model_t_firmware:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "2.3.1",
              "matchCriteriaId": "552BB9D9-7E83-401C-80B5-17967AE9B308"
            }
          ]
        },
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:satoshilabs:trezor_model_t:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "C7B1DAC4-21AF-40D2-884D-3849FA2FEDCD"
            }
          ]
        }
      ]
    },
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:satoshilabs:trezor_one_firmware:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "1.9.1",
              "matchCriteriaId": "8872F5FE-E695-4B40-969F-BDD859A9103D"
            }
          ]
        },
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:satoshilabs:trezor_one:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "92B96EC0-5A94-48F7-A1D7-FC9069AADA8C"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://blog.trezor.io/details-of-firmware-updates-for-trezor-one-version-1-9-1-and-trezor-model-t-version-2-3-1-1eba8f60f2dd",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}