There is an excessive memory allocation issue in the functions ReadBMPImage of coders/bmp.c and ReadDIBImage of coders/dib.c in ImageMagick 7.0.8-11, which allows remote attackers to cause a denial of service via a crafted image file.
https://www.debian.org/security/2018/dsa-4316
https://usn.ubuntu.com/4034-1/
https://usn.ubuntu.com/3785-1/
https://lists.debian.org/debian-lts-announce/2018/10/msg00002.html
https://github.com/ImageMagick/ImageMagick/issues/1268
https://github.com/ImageMagick/ImageMagick/commit/ecb31dbad39ccdc65868d5d2a37f0f0521250832