CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 1CVE-2020-25663
https://notcve.org/view.php?id=CVE-2020-25663
A call to ConformPixelInfo() in the SetImageAlphaChannel() routine of /MagickCore/channel.c caused a subsequent heap-use-after-free or heap-buffer-overflow READ when GetPixelRed() or GetPixelBlue() was called. This could occur if an attacker is able to submit a malicious image file to be processed by ImageMagick and could lead to denial of service. It likely would not lead to anything further because the memory is used as pixel data and not e.g. a function pointer. This flaw affects ImageMagick versions prior to 7.0.9-0. Una llamada a la función ConformPixelInfo() en la rutina SetImageAlphaChannel() del archivo /MagickCore/channel.c, causó una LECTURA de uso de la memoria previamente liberada de la pila o desbordamiento del búfer de la pila, cuando se llamó a las funciones GetPixelRed() o GetPixelBlue(). • https://bugzilla.redhat.com/show_bug.cgi?id=1891601 https://github.com/ImageMagick/ImageMagick/issues/1723 https://github.com/ImageMagick/ImageMagick/issues/1723#issuecomment-718275153 • CWE-416: Use After Free •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 1CVE-2020-25674
https://notcve.org/view.php?id=CVE-2020-25674
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. • https://bugzilla.redhat.com/show_bug.cgi?id=1891928 https://lists.debian.org/debian-lts-announce/2021/01/msg00010.html https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html • CWE-122: Heap-based Buffer Overflow •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 1CVE-2020-27750
https://notcve.org/view.php?id=CVE-2020-27750
A flaw was found in ImageMagick in MagickCore/colorspace-private.h and MagickCore/quantum.h. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type `unsigned char` and math division by zero. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.8-68. Se encontró un fallo en ImageMagick en el archivo MagickCore/colorspace-private.h y MagickCore/quantum.h. • https://bugzilla.redhat.com/show_bug.cgi?id=1891984 https://lists.debian.org/debian-lts-announce/2021/01/msg00010.html https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html • CWE-369: Divide By Zero •
CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 1CVE-2020-27756
https://notcve.org/view.php?id=CVE-2020-27756
In ParseMetaGeometry() of MagickCore/geometry.c, image height and width calculations can lead to divide-by-zero conditions which also lead to undefined behavior. This flaw can be triggered by a crafted input file processed by ImageMagick and could impact application availability. The patch uses multiplication in addition to the function `PerceptibleReciprocal()` in order to prevent such divide-by-zero conditions. This flaw affects ImageMagick versions prior to 7.0.9-0. En la función ParseMetaGeometry() del archivo MagickCore/geometry.c, los cálculos de altura y ancho de la imagen pueden conllevar a condiciones de división por cero que también conllevan a un comportamiento indefinido. • https://bugzilla.redhat.com/show_bug.cgi?id=1894233 https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html • CWE-369: Divide By Zero •
CVSS: 4.3EPSS: 0%CPEs: 3EXPL: 1CVE-2020-27754
https://notcve.org/view.php?id=CVE-2020-27754
In IntensityCompare() of /magick/quantize.c, there are calls to PixelPacketIntensity() which could return overflowed values to the caller when ImageMagick processes a crafted input file. To mitigate this, the patch introduces and uses the ConstrainPixelIntensity() function, which forces the pixel intensities to be within the proper bounds in the event of an overflow. This flaw affects ImageMagick versions prior to 6.9.10-69 and 7.0.8-69. En la función IntensityCompare() del archivo /magick/quantize.c, se presentan llamadas a PixelPacketIntensity() que podrían devolver valores desbordados a la persona que llama cuando ImageMagick procesa un archivo de entrada diseñado. Para mitigar esto, el parche introduce y utiliza la función ConstrainPixelIntensity(), que obliga a las intensidades de píxeles a estar dentro de los límites adecuados en caso de un desbordamiento. • https://bugzilla.redhat.com/show_bug.cgi?id=1894231 https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html • CWE-190: Integer Overflow or Wraparound •