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Fencer Intel
medium 6.3

CVE-2018-18073 json

Artifex Ghostscript allows attackers to bypass a sandbox protection mechanism by leveraging exposure of system operators in the saved execu…

published 8y ago modified 4mo ago also EUVD-2018-9812

cvss
6.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.7%
EPSS 2.7% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

Artifex Ghostscript allows attackers to bypass a sandbox protection mechanism by leveraging exposure of system operators in the saved execution stack in an error object.

Patch / fix

  • ghostscript Debian 14, Debian 13, Debian 12 9.25~dfsg-3

debian advisories DEBIAN-CVE-2018-18073

  • ghostscript Ubuntu 14.04 LTS 9.25~dfsg+1-0ubuntu0.14.04.2
  • ghostscript Ubuntu 16.04 LTS 9.25~dfsg+1-0ubuntu0.16.04.2
  • ghostscript Ubuntu 18.04 LTS 9.25~dfsg+1-0ubuntu0.18.04.2

ubuntu advisories UBUNTU-CVE-2018-18073

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ghostscript RHEL 7 9.07-31.el7_6.6
  • ghostscript-gtk RHEL 7 9.07-31.el7_6.6
  • ghostscript-cups RHEL 7 9.07-31.el7_6.6

red hat advisories RHSA-2018:3834

  • ghostscript SLES 12 SP4, SLES 12 SP3, SLES 12 SP2-BCL +13 more 9.26-23.16.1
  • libspectre SLES 12 SP4, SLES 12 SP3, SLES 12 SP2-BCL +13 more 0.2.7-12.4.1
  • ghostscript SLE Module for Basesystem 15 9.26-3.9.4
  • libspectre SLE Module for Desktop Applications 15 0.2.8-3.4.3

suse advisories SUSE-SU-2018:4090-2SUSE-SU-2018:4090-1SUSE-SU-2018:4087-1

  • ghostscript openSUSE Tumbleweed 9.54.0-2.2

opensuse advisories openSUSE-SU-2024:10783-1

  • ghostscript Alpine 3.24, Alpine 3.23, Alpine 3.22 +17 more 9.25-r1

alpine advisories ALPINE-CVE-2018-18073

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ghostscript Arch Linux 9.25-4

arch linux advisories AVG-786

Is CVE-2018-18073 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-18073 updated cvss 7.5

ghostscript: Saved execution stacks can leak operator arrays

  • Red Hat Enterprise Linux 5 ghostscript Red Hat Enterprise Linux 6 ghostscript, ghostscript-gtk
    affected: workaround, no fix planned “Please refer to the "Mitigation" section of CVE-2018-16509 : https://access.redhat.com/security/cve/cve-2018-16509”
  • Red Hat Enterprise Linux Client (v. 7) ghostscript 9.07-31.el7_6.6, ghostscript-cups 9.07-31.el7_6.6 Red Hat Enterprise Linux Client Optional (v. 7) ghostscript-gtk 9.07-31.el7_6.6 Red Hat Enterprise Linux ComputeNode (v. 7) ghostscript 9.07-31.el7_6.6, ghostscript-cups 9.07-31.el7_6.6 Red Hat Enterprise Linux ComputeNode Optional (v. 7) ghostscript-gtk 9.07-31.el7_6.6 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) ghostscript 9.07-31.el7_6.6, ghostscript-cups 9.07-31.el7_6.6 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) ghostscript-gtk 9.07-31.el7_6.6
    +4 more products
    Red Hat Enterprise Linux Server (v. 7) ghostscript 9.07-31.el7_6.6, ghostscript-cups 9.07-31.el7_6.6 Red Hat Enterprise Linux Server Optional (v. 7) ghostscript-gtk 9.07-31.el7_6.6 Red Hat Enterprise Linux Workstation (v. 7) ghostscript 9.07-31.el7_6.6, ghostscript-cups 9.07-31.el7_6.6 Red Hat Enterprise Linux Workstation Optional (v. 7) ghostscript-gtk 9.07-31.el7_6.6
    fixed: vendor fix “Please refer to the "Mitigation" section of CVE-2018-16509 : https://access.redhat.com/security/cve/cve-2018-16509” RHSA-2018:3834
  • Red Hat Enterprise Linux 8 libgs, ghostscript, ghostscript-x11, ghostscript-tools-fonts, ghostscript-tools-dvipdf, ghostscript-tools-printing
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.73% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 6.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.