The WriteImages function in magick/constitute.c in ImageMagick before 6.9.2-4 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted image file.
http://www.openwall.com/lists/oss-security/2016/06/02/13
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.securityfocus.com/bid/91039
https://access.redhat.com/errata/RHSA-2016:1237
https://github.com/ImageMagick/ImageMagick/commit/5b4bebaa91849c592a8448bc353ab25a54ff8c44
Source: MITRE
Published: 2017-03-15
Updated: 2018-05-18
Type: CWE-476
Base Score: 4.3
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 5.5
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 1.8
Severity: MEDIUM