Skip to content
Fencer Vulns
medium 6.5

CVE-2018-10963 json

The TIFFWriteDirectorySec() function in tif_dirwrite.c in LibTIFF through 4.0.9 allows remote attackers to cause a denial of service (asser…

published 2018-05-10 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-3014

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

The TIFFWriteDirectorySec() function in tif_dirwrite.c in LibTIFF through 4.0.9 allows remote attackers to cause a denial of service (assertion failure and application crash) via a crafted file, a different vulnerability than CVE-2017-13726.

Patch / fix

  • tiff Debian 14, Debian 13, Debian 12 4.0.9-6

debian advisories DEBIAN-CVE-2018-10963

  • tiff Ubuntu 14.04 LTS 4.0.3-7ubuntu0.10
  • tiff Ubuntu 16.04 LTS 4.0.6-1ubuntu0.5
  • tiff Ubuntu 18.04 LTS 4.0.9-5ubuntu0.1

ubuntu advisories UBUNTU-CVE-2018-10963

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

  • libtiff RHEL 7 4.0.3-32.el7
  • libtiff-tools RHEL 7 4.0.3-32.el7

red hat advisories RHSA-2019:2053

  • tiff SLE Module for Desktop Applications 15, SLE Module for Basesystem 15 4.0.9-5.9.1
  • tiff SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 4.0.9-44.15.2

suse advisories SUSE-SU-2018:1889-1SUSE-SU-2018:1826-1

  • tiff openSUSE Tumbleweed 4.3.0-1.3

opensuse advisories openSUSE-SU-2024:11461-1

  • tiff Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 4.0.9-r6
  • tiff Alpine 3.7, Alpine 3.6, Alpine 3.5 4.0.9-r5

alpine advisories ALPINE-CVE-2018-10963

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

  • lib32-libtiff Arch Linux 4.0.10-1
  • libtiff Arch Linux 4.0.9-2

arch linux advisories AVG-791AVG-813

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-2018-10963 updated cvss 3.3

libtiff: reachable assertion in TIFFWriteDirectorySec function in tif_dirwrite.c

  • Red Hat Enterprise Linux Client (v. 7) libtiff 4.0.3-32.el7 Red Hat Enterprise Linux Client Optional (v. 7) libtiff-tools 4.0.3-32.el7 Red Hat Enterprise Linux ComputeNode (v. 7) libtiff 4.0.3-32.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) libtiff-tools 4.0.3-32.el7 Red Hat Enterprise Linux Server (v. 7) libtiff 4.0.3-32.el7 Red Hat Enterprise Linux Server Optional (v. 7) libtiff-tools 4.0.3-32.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) libtiff 4.0.3-32.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) libtiff-tools 4.0.3-32.el7
    fixed: vendor fix RHSA-2019:2053
  • Red Hat Enterprise Linux 5 libtiff Red Hat Enterprise Linux 6 libtiff Red Hat Enterprise Linux 8 libtiff, libtiff-tools
    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

3.64% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.maptools.org http://bugzilla.maptools.org/show_bug.cgi?id=2795 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 Vulns 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.