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CVE-2020-27754

In IntensityCompare() of /magick/quantize.c, there are calls to PixelPacketIntensity() which could return overflowed values to the caller when ImageMagick proc…

Impact

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.

Affected products

VendorProductAffected versions
ImagemagickImagemagick
before 6.9.10-69
from 7.0.8 before 7.0.8-69
DebianDebian Linux
Version 9.0

Weakness classification

CWE-190

References