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CVE-2020-14966

Estado: ModificadaAlta (7.5)—

An issue was discovered in the jsrsasign package through 8.0.18 for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and '0' characters appended or prepended to an integer. The modified signatures are verified as valid. This could have a security-relevant impact if an application relied on a single canonical signature.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Kjur — JsrsasignNetapp — MAX Data

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2020-14966",
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          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
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  "affected": [
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  "published": "2020-06-22T12:15:10.087",
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          "value": "CWE-347"
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      "value": "An issue was discovered in the jsrsasign package through 8.0.18 for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and '0' characters appended or prepended to an integer. The modified signatures are verified as valid. This could have a security-relevant impact if an application relied on a single canonical signature."
    },
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      "lang": "es",
      "value": "Se detectó un problema en el paquete jsrsasign por medio de 8.0.18 para Node.js. Permite una maleabilidad en las firmas ECDSA al no comprobar los desbordamientos en la longitud de una secuencia y los caracteres \"0\" agregados o antepuestos a un entero. Las firmas modificadas son verificadas como válidas. Esto podría tener un impacto relevante para la seguridad si una aplicación se basara en una sola firma canónica"
    }
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  "lastModified": "2026-06-22T03:18:31.867",
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