CVE-2017-17913
In GraphicsMagick 1.4 snapshot-20171217 Q8, there is a stack-based buffer over-read in WriteWEBPImage in coders/webp.c, related to an incompatibility with libwebp versions, 0.5.0 and later, that use a different structure type.
Date published : 2017-12-26
http://hg.graphicsmagick.org/hg/GraphicsMagick/rev/6dda3c33f35f