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CVE-2009-0749

Estado: ModificadaAlta (7.8)—

Use-after-free vulnerability in the GIFReadNextExtension function in lib/pngxtern/gif/gifread.c in OptiPNG 0.6.2 and earlier allows context-dependent attackers to cause a denial of service (application crash) via a crafted GIF image that causes the realloc function to return a new pointer, which triggers memory corruption when the old pointer is accessed.

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)

Opensuse — OpensuseOptipng Project — OptipngSuse — Linux Enterprise

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2009-0749",
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          "lang": "en",
          "value": "CWE-416"
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    {
      "lang": "en",
      "value": "Use-after-free vulnerability in the GIFReadNextExtension function in lib/pngxtern/gif/gifread.c in OptiPNG 0.6.2 and earlier allows context-dependent attackers to cause a denial of service (application crash) via a crafted GIF image that causes the realloc function to return a new pointer, which triggers memory corruption when the old pointer is accessed."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad del tipo \"use-after-free\" (usar recurso después de haberlo liberado o destruido) en la función GIFReadNextExtension en lib/pngxtern/gif/gifread.c en OptiPNG v.0.6.2 y anteriores. Permite a atacantes dependientes del contexto causar una denegación del servicio (indisponibilidad y caída de la aplicación) a través de una imagen GIF manipulada que provoca que la llamada a la función realloc devuelva un nuevo puntero, que causa una corrupción de memoria cuando se accede al viejo puntero."
    }
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  "lastModified": "2026-06-16T23:05:43.573",
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