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Fencer Intel
medium 6.5

CVE-2018-19210 json

In LibTIFF 4.0.9, there is a NULL pointer dereference in the TIFFWriteDirectorySec function in tif_dirwrite.c that will lead to a denial of…

published 2018-11-12 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-10919

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.6%
EPSS 3.6% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

In LibTIFF 4.0.9, there is a NULL pointer dereference in the TIFFWriteDirectorySec function in tif_dirwrite.c that will lead to a denial of service attack, as demonstrated by tiffset.

Patch / fix

  • tiff Debian 14, Debian 13, Debian 12 4.0.10-4

debian advisories DEBIAN-CVE-2018-19210

  • tiff Ubuntu 14.04 LTS 4.0.3-7ubuntu0.11
  • tiff Ubuntu 16.04 LTS 4.0.6-1ubuntu0.6
  • tiff Ubuntu 18.04 LTS 4.0.9-5ubuntu0.2

ubuntu advisories UBUNTU-CVE-2018-19210

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

  • tiff SLE Module for Package Hub 15, SLE Module for Desktop Applications 15, SLE Module for Basesystem 15 4.0.9-5.27.5
  • tiff SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES 12 SP4 +5 more 4.0.9-44.30.1
  • tiff SLE Module for Package Hub 15, SLE Module for Desktop Applications 15, SLE Module for Basesystem 15 4.0.9-5.20.1

suse advisories SUSE-SU-2019:0786-1SUSE-SU-2018:4191-1SUSE-SU-2018:4008-1

  • tiff openSUSE Tumbleweed 4.3.0-1.3
  • tiff openSUSE Leap 15.0 4.0.9-lp150.4.16.1

opensuse advisories openSUSE-SU-2024:11461-1openSUSE-SU-2019:1161-1

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-2018-19210 updated cvss 3.3

libtiff: NULL pointer dereference in TIFFWriteDirectorySec function in tif_dirwrite.c

  • Red Hat Enterprise Linux 5 libtiff Red Hat Enterprise Linux 6 libtiff Red Hat Enterprise Linux 7 libtiff, libtiff-tools, compat-libtiff3
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 8 libtiff, libtiff-tools, mingw-libtiff, mingw32-libtiff, mingw64-libtiff
    affected: no fix available, 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

3.61% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.maptools.org http://bugzilla.maptools.org/show_bug.cgi?id=2820 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

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.