Vulnerability in Artifex Ghostscript
CVE-2018-16802
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (81.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Artifex Ghostscript
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 8.0, 9.0
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Server Aus — versions 7.6
- Red Hat Enterprise Linux Server Eus — versions 7.6
- Red Hat Enterprise Linux Server Tus — versions 7.6
- Red Hat Enterprise Linux Workstation — versions 7.0
Public proof-of-concept exploits
References
- seclists.org/oss-sec/2018/q3/228 (mailing-list, Mailing List, Third Party Advisory)
- git.ghostscript.com/
- seclists.org/oss-sec/2018/q3/229 (Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201811-12 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3768-1/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:3834 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2018/dsa-4294 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/09/msg00015.html (mailing-list, Mailing List, Third Party Advisory)
- git.ghostscript.com/
- git.ghostscript.com/
Frequently asked questions
- What is CVE-2018-16802?
- CVE-2018-16802 is a high-severity vulnerability in Artifex Ghostscript. CVSS score: 7.8/10. Published 2018-09-10.
- How severe is CVE-2018-16802?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2018-16802 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.