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CVE-2021-3393

Estado: ModificadaMedia (4.3)—

An information leak was discovered in postgresql in versions before 13.2, before 12.6 and before 11.11. A user having UPDATE permission but not SELECT permission to a particular column could craft queries which, under some circumstances, might disclose values from that column in error messages. An attacker could use this flaw to obtain information stored in a column they are allowed to write but not read.

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 (3)

Postgresql — PostgresqlRedhat — Enterprise LinuxRedhat — Software Collections

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2021-3393",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
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  "affected": [
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      "affectedData": [
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          "vendor": "n/a",
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  "published": "2021-04-01T14:15:13.657",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "secalert@redhat.com",
      "description": [
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          "lang": "en",
          "value": "CWE-209"
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      "value": "An information leak was discovered in postgresql in versions before 13.2, before 12.6 and before 11.11. A user having UPDATE permission but not SELECT permission to a particular column could craft queries which, under some circumstances, might disclose values from that column in error messages. An attacker could use this flaw to obtain information stored in a column they are allowed to write but not read."
    },
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      "lang": "es",
      "value": "Se detectó un filtrado de información en postgresql en versiones anteriores a 13.2, versiones anteriores a 12.6 y versiones anteriores a 11.11. Un usuario que tenga el permiso UPDATE pero no el permiso SELECT para una columna en particular podría diseñar consultas que, en algunas circunstancias, podrían divulgar valores de esa columna en mensajes de error. Un atacante podría usar este fallo para obtener información almacenada en una columna que puede escribir pero no leer."
    }
  ],
  "lastModified": "2026-06-17T04:05:01.073",
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