The mem_get_bits_rectangle function in Artifex Software, Inc. Ghostscript 9.20 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted PostScript document.
http://www.debian.org/security/2017/dsa-3838
http://www.ghostscript.com/cgi-bin/findgit.cgi?309eca4e0a31ea70dcc844812691439312dad091
http://www.securityfocus.com/bid/96995
http://www.securitytracker.com/id/1039071
https://access.redhat.com/errata/RHSA-2017:2180
Source: MITRE
Published: 2017-03-21
Updated: 2018-01-05
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