It was found that in ghostscript some privileged operators remained accessible from various places after the CVE-2019-6116 fix. A specially crafted PostScript file could use this flaw in order to, for example, have access to the file system outside of the constrains imposed by -dSAFER. Ghostscript versions before 9.27 are vulnerable.
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=4ec9ca74bed49f2a82acb4bf430eae0d8b3b75c9
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00088.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00090.html
https://access.redhat.com/errata/RHSA-2019:0971
https://access.redhat.com/errata/RHSA-2019:1017
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3839
https://lists.debian.org/debian-lts-announce/2019/05/msg00023.html
https://seclists.org/bugtraq/2019/May/23
Source: MITRE
Published: 2019-05-16
Updated: 2020-10-15
Type: NVD-CWE-noinfo
Base Score: 6.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH