CVE-2018-19134 Information

Description

In Artifex Ghostscript through 9.25 the setpattern operator did not properly validate certain types. A specially crafted PostScript document could exploit this to crash Ghostscript or possibly execute arbitrary code in the context of the Ghostscript process. This is a type confusion issue because of failure to check whether the Implementation of a pattern dictionary was a structure type.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=693baf02152119af6e6afd30bb8ec76d14f84bbf http://www.securityfocus.com/bid/106278 https://access.redhat.com/errata/RHSA-2018:3834 https://bugs.ghostscript.com/show_bug.cgi?id=700141 https://lists.debian.org/debian-lts-announce/2018/12/msg00019.html https://semmle.com/news/semmle-discovers-severe-vulnerability-ghostscript-postscript-pdf https://www.ghostscript.com/doc/9.26/News.htm

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8