Vulnerability in Artifex Ghostscript
CVE-2018-16509
An issue was discovered in Artifex Ghostscript before 9.24. Incorrect "restoration of privilege" checking during handling of /invalidaccess exceptions could be used by attackers able to supply crafted PostScript to execute code using the "pipe" instruction.
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: 0.925 (99.8th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.968 · newest: 0.925 · change: -0.043
Affected products
- Artifex Ghostscript
- Artifex Gpl Ghostscript
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 8.0, 9.0
- Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
- Red Hat Enterprise Linux Server — versions 6.0, 7.0
- Red Hat Enterprise Linux Server Eus — versions 7.5
- Red Hat Enterprise Linux Workstation — versions 6.0, 7.0
Public proof-of-concept exploits
References
- git.ghostscript.com/
- www.exploit-db.com/exploits/45369/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- bugs.ghostscript.com/show_bug.cgi (Permissions Required, Third Party Advisory, Issue Tracking)
- access.redhat.com/errata/RHSA-2018:2918 (vendor-advisory, Third Party Advisory)
- git.ghostscript.com/
- security.gentoo.org/glsa/201811-12 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3768-1/ (vendor-advisory, Third Party Advisory)
- www.artifex.com/news/ghostscript-security-resolved/ (Vendor Advisory)
- access.redhat.com/errata/RHSA-2018:3760 (vendor-advisory, Third Party Advisory)
- seclists.org/oss-sec/2018/q3/142 (Exploit, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-16509?
- CVE-2018-16509 is a high-severity vulnerability in Artifex Ghostscript. CVSS score: 7.8/10. Published 2018-09-05.
- How severe is CVE-2018-16509?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2018-16509 known to be exploited?
- 51 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.