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CVE-2017-6922

Estado: ModificadaMedia (6.5)—

En Drupal core, en las versiones 8.x anteriores a la 8.3.4 y en las 7.x anteriores a la 7.56, los archivos privados subidos por un usuario anónimo que no estén conectados al contenido del sitio deberían ser visibles solo para el mismo usuario anónimo que los subió, en lugar de todos los usuarios anónimos. Anteriormente, Drupal core no disponía de esta protección, permitiendo que ocurriera una vulnerabilidad de omisión de acceso. Este problema se mitiga por el hecho de que, para que se vea afectado, el sitio deberá permitir a los usuarios anónimos subir archivos a un sistema de archivos privado.

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)

Debian — Debian LinuxDrupal — Drupal

CWE

Referencias

JSON original (NVD)

Mostrar
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          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
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          "userInteraction": "NONE",
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  "published": "2019-01-22T15:29:00.223",
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      "description": [
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          "value": "CWE-552"
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      "value": "In Drupal core 8.x prior to 8.3.4 and Drupal core 7.x prior to 7.56; Private files that have been uploaded by an anonymous user but not permanently attached to content on the site should only be visible to the anonymous user that uploaded them, rather than all anonymous users. Drupal core did not previously provide this protection, allowing an access bypass vulnerability to occur. This issue is mitigated by the fact that in order to be affected, the site must allow anonymous users to upload files into a private file system."
    },
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    }
  ],
  "lastModified": "2026-06-17T01:23:20.383",
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