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Fencer Intel
medium 6.5

CVE-2018-7443 json

The ReadTIFFImage function in coders/tiff.c in ImageMagick 7.0.7-23 Q16 does not properly validate the amount of image data in a file, whic…

published 2018-02-23 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-19174

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

The ReadTIFFImage function in coders/tiff.c in ImageMagick 7.0.7-23 Q16 does not properly validate the amount of image data in a file, which allows remote attackers to cause a denial of service (memory allocation failure in the AcquireMagickMemory function in MagickCore/memory.c).

Patch / fix

  • imagemagick Debian 14, Debian 13, Debian 12 8:6.9.9.39+dfsg-1

debian advisories DEBIAN-CVE-2018-7443

  • imagemagick Ubuntu 14.04 LTS 8:6.7.7.10-6ubuntu3.11
  • imagemagick Ubuntu 16.04 LTS 8:6.8.9.9-7ubuntu5.11
  • imagemagick Ubuntu 18.04 LTS 8:6.9.7.4+dfsg-16ubuntu6.2

ubuntu advisories UBUNTU-CVE-2018-7443

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

  • ImageMagick SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 6.4.3.6-78.40.1
  • ImageMagick SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2 +8 more 6.8.8.1-71.47.1

suse advisories SUSE-SU-2018:0880-1SUSE-SU-2018:0857-1

  • imagemagick6 Alpine 3.16, Alpine 3.15, Alpine 3.14 +4 more 6.9.10.37-r0
  • imagemagick6 Alpine 3.9, Alpine 3.8, Alpine 3.7 6.9.10.39-r0

alpine advisories ALPINE-CVE-2018-7443

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

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-2018-7443 updated cvss 3.3

ImageMagick: Memory allocation failure in ReadTIFFImage function in memory.c

  • Red Hat Enterprise Linux 5 ImageMagick Red Hat Enterprise Linux 6 ImageMagick, ImageMagick-c++, ImageMagick-perl Red Hat Enterprise Linux 7 ImageMagick, ImageMagick-c++, ImageMagick-perl Red Hat Enterprise Linux 8 ImageMagick
    affected: no fix planned “Will not fix”

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

3.23% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/ImageMagick/ImageMagick/issues/999 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

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.