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TI-2018-11993 Aliases CVE-2018-16749GHSA-9wpf-wh66-2mmp

In ImageMagick 7.0.7-29 and earlier, a missing NULL check in ReadOneJNGImage in…

Priority LOW 33CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 8 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

In ImageMagick 7.0.7-29 and earlier, a missing NULL check in ReadOneJNGImage in coders/png.c allows an attacker to cause a denial of service (WriteBlob assertion failure and application exit) via a crafted file.

Why it matters now

EPSS 0.02305 83rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 1 advisoryRed Hat: 8 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*before 6.9.9-42; 7.0.0-0 – 7.0.7-29VulnerableImageMagick
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
  • cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:* Versions before 6.9.9-42; 7.0.0-0 – 7.0.7-29 Vulnerable ·ImageMagick
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian

Remediation

Red Hat 1 advisory

  • RHSA-2020:1180 Released 2020-03-31 · Red Hat rating Moderate
    ImageMagick security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) ImageMagick-6.9.10.68-3.el7, ImageMagick-c++-6.9.10.68-3.el7, emacs-1:24.3-23.el7 +4
    • Red Hat Enterprise Linux Client Optional (v. 7) ImageMagick-c++-devel-6.9.10.68-3.el7, ImageMagick-devel-6.9.10.68-3.el7, ImageMagick-doc-6.9.10.68-3.el7 +7
    • Red Hat Enterprise Linux ComputeNode (v. 7) emacs-1:24.3-23.el7, emacs-filesystem-1:24.3-23.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) ImageMagick-6.9.10.68-3.el7, ImageMagick-c++-6.9.10.68-3.el7, ImageMagick-c++-devel-6.9.10.68-3.el7 +13
    • Red Hat Enterprise Linux Server (v. 7) ImageMagick-6.9.10.68-3.el7, ImageMagick-6.9.10.68-3.el7.ppc, ImageMagick-c++-6.9.10.68-3.el7 +6
    • Red Hat Enterprise Linux Server Optional (v. 7) ImageMagick-c++-6.9.10.68-3.el7, ImageMagick-c++-6.9.10.68-3.el7.ppc, ImageMagick-c++-devel-6.9.10.68-3.el7 +13
    • Red Hat Enterprise Linux Workstation (v. 7) ImageMagick-6.9.10.68-3.el7, ImageMagick-c++-6.9.10.68-3.el7, ImageMagick-perl-6.9.10.68-3.el7 +5
    • Red Hat Enterprise Linux Workstation Optional (v. 7) ImageMagick-c++-devel-6.9.10.68-3.el7, ImageMagick-devel-6.9.10.68-3.el7, ImageMagick-doc-6.9.10.68-3.el7 +6

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:1180
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:1180
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2020:1180
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2020:1180
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:1180
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:1180
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:1180
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:1180

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-16749
  2. 2026-10-03 Alias added: GHSA-9wpf-wh66-2mmp

References

Exploit 1

Patch 1

Advisory 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences