CVE-2018-16802

moderate-risk

Published 2018-09-10

An issue was discovered in Artifex Ghostscript before 9.25. Incorrect "restoration of privilege" checking when running out of stack during exception handling could be used by attackers able to supply crafted PostScript to execute code using the "pipe" instruction. This is due to an incomplete fix for CVE-2018-16509.

Do I need to act?

0.97% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.8/10 High

LOCAL / LOW complexity

Affected Products (12)

Ghostscript

Debian Linux

Ubuntu Linux

Enterprise Linux Desktop

Enterprise Linux Server

Enterprise Linux Server Aus

Enterprise Linux Server Eus

Enterprise Linux Server Tus

Enterprise Linux Workstation

Affected Vendors

Debian Redhat Canonical Artifex

References (20)

http://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=3e5d316b72e3965b7968bb...

http://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=643b24dbd002fb9c131313...

Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3834

https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5812b1b78fc4d36fd...

Mailing List https://lists.debian.org/debian-lts-announce/2018/09/msg00015.html

Mailing List https://seclists.org/oss-sec/2018/q3/228

Mailing List https://seclists.org/oss-sec/2018/q3/229

Third Party Advisory https://security.gentoo.org/glsa/201811-12

Third Party Advisory https://usn.ubuntu.com/3768-1/

Third Party Advisory https://www.debian.org/security/2018/dsa-4294