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CVE-2020-8265

Estado: ModificadaAlta (8.1)—

Node.js versions before 10.23.1, 12.20.1, 14.15.4, 15.5.1 are vulnerable to a use-after-free bug in its TLS implementation. When writing to a TLS enabled socket, node::StreamBase::Write calls node::TLSWrap::DoWrite with a freshly allocated WriteWrap object as first argument. If the DoWrite method does not return an error, this object is passed back to the caller as part of a StreamWriteResult structure. This may be exploited to corrupt memory leading to a Denial of Service or potentially other exploits.

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 (5)

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2020-8265",
  "cveTags": [],
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          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
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          "availabilityImpact": "PARTIAL",
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        "obtainAllPrivilege": false,
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          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 2.2
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  "published": "2021-01-06T21:15:14.410",
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  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-416"
        }
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      "description": [
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  "descriptions": [
    {
      "lang": "en",
      "value": "Node.js versions before 10.23.1, 12.20.1, 14.15.4, 15.5.1 are vulnerable to a use-after-free bug in its TLS implementation. When writing to a TLS enabled socket, node::StreamBase::Write calls node::TLSWrap::DoWrite with a freshly allocated WriteWrap object as first argument. If the DoWrite method does not return an error, this object is passed back to the caller as part of a StreamWriteResult structure. This may be exploited to corrupt memory leading to a Denial of Service or potentially other exploits."
    },
    {
      "lang": "es",
      "value": "Node.js versiones anteriores a 10.23.1, 12.20.1, 14.15.4, 15.5.1, son vulnerables a un bug de uso de la memoria previamente liberada en su implementación TLS. Al escribir en un socket habilitado para TLS, node::StreamBase::Write llama node::TLSWrap::DoWrite con un objeto WriteWrap recién asignado como primer argumento. Si el método DoWrite no devuelve un error, este objeto es devuelto a la persona que llama como parte de una estructura de StreamWriteResult. Esto puede ser explotado para corromper la memoria conllevando a una Denegación de Servicio o potencialmente otras explotaciones"
    }
  ],
  "lastModified": "2026-06-17T03:26:09.627",
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