FKIE_CVE-2020-25082

Vulnerability from fkie_nvd - Published: 2021-08-10 17:15 - Updated: 2024-11-21 05:17
Summary
An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy.
Impacted products
Vendor Product Version
nuvoton npct75x_firmware *
nuvoton npct75x -

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              "versionEndExcluding": "7.2.2.0",
              "versionStartIncluding": "7.2.0",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy."
    },
    {
      "lang": "es",
      "value": "Un atacante con acceso f\u00edsico a Nuvoton Trusted Platform Module (NPCT75x versiones 7.2.x anteriores a 7.2.2.0) podr\u00eda extraer una clave privada de Elliptic Curve Cryptography (ECC) por medio de un ataque de canal lateral contra ECDSA, debido a una Discrepancia de Tiempo Observable"
    }
  ],
  "id": "CVE-2020-25082",
  "lastModified": "2024-11-21T05:17:13.177",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 1.9,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
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        "source": "nvd@nist.gov",
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        "userInteractionRequired": false
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          "attackVector": "PHYSICAL",
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
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          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
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        "exploitabilityScore": 0.2,
        "impactScore": 3.6,
        "source": "cve@mitre.org",
        "type": "Secondary"
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          "attackVector": "PHYSICAL",
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          "confidentialityImpact": "HIGH",
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        "source": "nvd@nist.gov",
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  "published": "2021-08-10T17:15:07.087",
  "references": [
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      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://www.nuvoton.com/support/product-related-information/security-advisories/sa-002/"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://www.nuvoton.com/support/product-related-information/security-advisories/sa-002/"
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-203"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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