LocaleLowercase in MagickCore/locale.c in ImageMagick before 7.0.8-32 allows out-of-bounds access, leading to a SIGSEGV.
https://github.com/ImageMagick/ImageMagick/issues/1495
https://github.com/ImageMagick/ImageMagick/commit/edc7d3035883ddca8413e4fe7689aa2e579ef04a
https://github.com/ImageMagick/ImageMagick/commit/58d9c46929ca0828edde34d263700c3a5fe8dc3c
https://github.com/ImageMagick/ImageMagick/commit/07eebcd72f45c8fd7563d3f9ec5d2bed48f65f36