The ReadOneJNGImage function in coders/png.c in GraphicsMagick 1.3.26 allows remote attackers to cause a denial of service (application crash) during JNG reading via a zero-length color_image data structure.
http://hg.code.sf.net/p/graphicsmagick/code/rev/d445af60a8d5
http://hg.code.sf.net/p/graphicsmagick/code/rev/dea93a690fc1
http://www.securityfocus.com/bid/99498
https://lists.debian.org/debian-lts-announce/2018/08/msg00002.html
Source: MITRE
Published: 2017-07-07
Updated: 2018-10-18
Type: CWE-20
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH