graphicsmagick is vulnerable to arbitrary code execution. The vulnerability exists as the ReadMNGImage
function in coders/png.c
mishandles large MNG images, leading to an invalid memory read in the SetImageColorCallBack function in magick/image.c.
hg.code.sf.net/p/graphicsmagick/code/rev/cd699a44f188
blogs.gentoo.org/ago/2017/08/05/graphicsmagick-invalid-memory-read-in-setimagecolorcallback-image-c/
lists.debian.org/debian-lts-announce/2018/08/msg00002.html
lists.fedoraproject.org/archives/list/[email protected]/message/PF62B5PJA2JDUOCKJGUQO3SPL74BEYSV/
lists.fedoraproject.org/archives/list/[email protected]/message/WHIKB4TP6KBJWT2UIPWL5MWMG5QXKGEJ/
www.debian.org/security/2018/dsa-4321