CVE-2009-0922

Estado: ModificadaMedia (4)—💥 Exploit
PostgreSQL before 8.3.7, 8.2.13, 8.1.17, 8.0.21, and 7.4.25 allows remote authenticated users to cause a denial of service (stack consumption and crash) by triggering a failure in the conversion of a localized error message to a client-specified encoding, as demonstrated using mismatched encoding conversion requests.
CVSS

Versión: 2.0
Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P
Puntuación base: 4
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 10%
Percentil entre todas las CVEs puntuadas: 96
Fecha de la puntuación: 7/10/2026
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).
💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.
Publicado en Exploit-DB · PostgreSQL 8.3.6 - Conversion Encoding Remote Denial of Service (11/3/2009)
Tecnologías afectadas (1)

Postgresql — Postgresql
CWE

CWE-399
Referencias

JSON original (NVD)

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{
  "id": "CVE-2009-0922",
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          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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  "published": "2009-03-17T17:30:00.187",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "PostgreSQL before 8.3.7, 8.2.13, 8.1.17, 8.0.21, and 7.4.25 allows remote authenticated users to cause a denial of service (stack consumption and crash) by triggering a failure in the conversion of a localized error message to a client-specified encoding, as demonstrated using mismatched encoding conversion requests."
    },
    {
      "lang": "es",
      "value": "PostgreSQL en versiones anteriores a 8.3.7, 8.2.13, 8.1.17, 8.0.21 y 7.4.25 permite a usuarios remotos autenticados provocar una denegación de servicio (consumo de pila y caída) desencadenando un fallo en la conversión de un mensaje de error localizado en el cifrado para un cliente especificado, como se demuestra usando peticiones de conversión de codificación no coincidentes."
    }
  ],
  "lastModified": "2026-06-16T23:06:06.700",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:postgresql:postgresql:7.4.24:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4394564D-131D-41C8-AE3A-BFF44779F27B"
            },
            {
              "criteria": "cpe:2.3:a:postgresql:postgresql:8.0.20:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3CD7F8CA-09B3-4038-B8B0-2D62A77F2478"
            },
            {
              "criteria": "cpe:2.3:a:postgresql:postgresql:8.1.16:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3B903334-2F67-4725-8277-6913E03BEFC3"
            },
            {
              "criteria": "cpe:2.3:a:postgresql:postgresql:8.2.12:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BC8C96F7-7F85-4E47-A05F-15E3C70AF583"
            },
            {
              "criteria": "cpe:2.3:a:postgresql:postgresql:8.3.6:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "74857259-30C7-422D-A24D-BE1E33F09466"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "vendorComments": [
    {
      "comment": "This issue has been addressed in Red Hat\nEnterprise Linux 4 and 5 via:\nhttps://rhn.redhat.com/errata/RHSA-2009-1484.html\n\nand in Red Hat Application Stack v2 via:\nhttps://rhn.redhat.com/errata/RHSA-2009-1067.html",
      "lastModified": "2009-10-08T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "evaluatorComment": "Per: https://bugzilla.redhat.com/show_bug.cgi?id=488156\r\n\r\n\"PostgreSQL allows remote authenticated users to cause a momentary denial\r\nof service (crash due to stack consumption) when there is a failure to\r\nconvert a localized error message to the client-specified encoding.\r\nIn releases 8.3.6, 8.2.12, 8.1.16. 8.0.20, and 7.4.24, a trivial\r\nmisconfiguration is sufficient to provoke a crash.  In older releases\r\nit is necessary to select a locale and client encoding for which\r\nspecific messages fail to translate, and so a given installation may or\r\nmay not be vulnerable depending on the administrator-determined locale\r\nsetting.\r\n\r\nReleases 8.3.7, 8.2.13, 8.1.17, 8.0.21, and 7.4.25 are secure against\r\nall known variants of this issue.\"",
  "sourceIdentifier": "cve@mitre.org"
}