Describe CVE-2016-8678.
What is CVE-2016-8678?
The IsPixelMonochrome function in MagickCore/pixel-accessor.h in ImageMagick 7.0.3.0 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via a crafted file.  NOTE: the vendor says "This is a Q64 issue and we do not support Q64.".