In GraphicsMagick 1.4 snapshot-20190322 Q8, there is a heap-based buffer over-read in the function ReadMIFFImage of coders/miff.c, which allows attackers to cause a denial of service or information disclosure via an RLE packet.Referenceshttps://sourceforge.net/p/graphicsmagick/bugs/598/http://hg.graphicsmagick.org/hg/GraphicsMagick/rev/f7610c1281c1https://lists.debian.org/debian-lts-announce/2019/04/msg00015.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00093.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00107.htmlhttps://usn.ubuntu.com/4207-1/https://www.debian.org/security/2020/dsa-4640
