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CVE-2013-1895

Estado: ModificadaAlta (7.5)—

The py-bcrypt module before 0.3 for Python does not properly handle concurrent memory access, which allows attackers to bypass authentication via multiple authentication requests, which trigger the password hash to be overwritten.

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)

Fedoraproject — FedoraPython — Py-bcrypt

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2013-1895",
  "cveTags": [],
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
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        "obtainOtherPrivilege": false,
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
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          "userInteraction": "NONE",
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  "affected": [
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      "affectedData": [
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          "vendor": "py-bcrypt",
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  "published": "2020-01-28T15:15:14.343",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-307"
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  "descriptions": [
    {
      "lang": "en",
      "value": "The py-bcrypt module before 0.3 for Python does not properly handle concurrent memory access, which allows attackers to bypass authentication via multiple authentication requests, which trigger the password hash to be overwritten."
    },
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      "lang": "es",
      "value": "El módulo py-bcrypt versiones anteriores a 0.3 para Python, no maneja apropiadamente el acceso concurrente a la memoria, que permite a atacantes omitir la autenticación por medio de múltiples peticiones de autenticación, lo que desencadena que el hash de contraseña se sobrescriba."
    }
  ],
  "lastModified": "2026-06-16T23:52:19.253",
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