CVE-2018-16802

MEDIUM

Description

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.

References

http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=3e5d316b72e3965b7968bb1d96baa137cd063ac6

http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=643b24dbd002fb9c131313253c307cf3951b3d47

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

https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=5812b1b78fc4d36fdc293b7859de69241140d590

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

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

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

https://security.gentoo.org/glsa/201811-12

https://usn.ubuntu.com/3768-1/

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

Details

Source: MITRE

Published: 2018-09-10

Updated: 2019-10-03

Risk Information

CVSS v2.0

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

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/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