nvd-json-data-feeds/CVE-2020/CVE-2020-256xx/CVE-2020-25674.json

{
  "id": "CVE-2020-25674",
  "sourceIdentifier": "secalert@redhat.com",
  "published": "2020-12-08T22:15:17.320",
  "lastModified": "2023-11-07T03:20:21.313",
  "vulnStatus": "Modified",
  "descriptions": [
    {
      "lang": "en",
      "value": "WriteOnePNGImage() from coders/png.c (the PNG coder) has a for loop with an improper exit condition that can allow an out-of-bounds READ via heap-buffer-overflow. This occurs because it is possible for the colormap to have less than 256 valid values but the loop condition will loop 256 times, attempting to pass invalid colormap data to the event logger. The patch replaces the hardcoded 256 value with a call to MagickMin() to ensure the proper value is used. This could impact application availability when a specially crafted input file is processed by ImageMagick. This flaw affects ImageMagick versions prior to 7.0.8-68."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n WriteOnePNGImage() del archivo coders/png.c (el codificador PNG) presenta un bucle for con una condici\u00f3n de salida inapropiada que puede permitir una LECTURA fuera de l\u00edmites por medio de un desbordamiento del b\u00fafer de la pila. Esto ocurre porque es posible que el mapa de colores tenga menos de 256 valores v\u00e1lidos, pero la condici\u00f3n de bucle se repetir\u00e1 256 veces, intentando pasar datos del mapa de colores no v\u00e1lidos al registrador de eventos. El parche reemplaza el valor 256 embebido con una llamada a la funci\u00f3n MagickMin() para garantizar que se utilice el valor apropiado. Esto podr\u00eda afectar la disponibilidad de la aplicaci\u00f3n cuando ImageMagick procesa un archivo de entrada especialmente dise\u00f1ado. Este fallo afecta a ImageMagick versiones anteriores a 7.0.8-68"
    }
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          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM"
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        "exploitabilityScore": 1.8,
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          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.3
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        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.6,
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        "obtainAllPrivilege": false,
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          "value": "CWE-122"
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  "references": [
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1891928",
      "source": "secalert@redhat.com",
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}