FKIE_CVE-2025-14505

Vulnerability from fkie_nvd - Published: 2026-01-08 21:15 - Updated: 2026-01-08 21:15
Severity ?
5.6 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Summary
The ECDSA implementation of the Elliptic package generates incorrect signatures if an interim value of 'k' (as computed based on step 3.2 of RFC 6979 https://datatracker.ietf.org/doc/html/rfc6979 ) has leading zeros and is susceptible to cryptanalysis, which can lead to secret key exposure. This happens, because the byte-length of 'k' is incorrectly computed, resulting in its getting truncated during the computation. Legitimate transactions or communications will be broken as a result. Furthermore, due to the nature of the fault, attackers could–under certain conditions–derive the secret key, if they could get their hands on both a faulty signature generated by a vulnerable version of Elliptic and a correct signature for the same inputs. This issue affects all known versions of Elliptic (at the time of writing, versions less than or equal to 6.6.1).
References
36c7be3b-2937-45df-85ea-ca7133ea542chttps://github.com/indutny/elliptic/issues/321
36c7be3b-2937-45df-85ea-ca7133ea542chttps://www.herodevs.com/vulnerability-directory/cve-2025-14505
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The ECDSA implementation of the Elliptic package generates incorrect signatures if an interim value of \u0027k\u0027 (as computed based on step 3.2 of  RFC 6979 https://datatracker.ietf.org/doc/html/rfc6979 ) has leading zeros and is susceptible to cryptanalysis, which can lead to secret key exposure. This happens, because the byte-length of \u0027k\u0027 is incorrectly computed, resulting in its getting truncated during the computation. Legitimate transactions or communications will be broken as a result.\u00a0Furthermore, due to the nature of the fault, attackers could\u2013under certain conditions\u2013derive the secret key, if they could get their hands on both a faulty signature generated by a vulnerable version of Elliptic and a correct signature for the same inputs.\n\nThis issue affects all known versions of Elliptic (at the time of writing, versions less than or equal to 6.6.1)."
    }
  ],
  "id": "CVE-2025-14505",
  "lastModified": "2026-01-08T21:15:42.023",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.6,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.4,
        "source": "36c7be3b-2937-45df-85ea-ca7133ea542c",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-01-08T21:15:42.023",
  "references": [
    {
      "source": "36c7be3b-2937-45df-85ea-ca7133ea542c",
      "url": "https://github.com/indutny/elliptic/issues/321"
    },
    {
      "source": "36c7be3b-2937-45df-85ea-ca7133ea542c",
      "url": "https://www.herodevs.com/vulnerability-directory/cve-2025-14505"
    }
  ],
  "sourceIdentifier": "36c7be3b-2937-45df-85ea-ca7133ea542c",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1240"
        }
      ],
      "source": "36c7be3b-2937-45df-85ea-ca7133ea542c",
      "type": "Secondary"
    }
  ]
}


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