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Fencer Vulns
high 8.8

CVE-2018-18557 in the critical feed json

LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta,…

published 2018-10-22 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-10277

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
15.0%
EPSS 15.0% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 (with JBIG enabled) decodes arbitrarily-sized JBIG into a buffer, ignoring the buffer size, which leads to a tif_jbig.c JBIGDecode out-of-bounds write.

Patch / fix

  • tiff Debian 14, Debian 13, Debian 12 4.0.9+git181026-1

debian advisories DEBIAN-CVE-2018-18557

  • 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-2018-18557

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 SLES 12 SP4, SLES 12 SP3, SLED 12 SP4 +5 more 4.0.9-44.27.1
  • tiff SLE Module for Package Hub 15, SLE Module for Desktop Applications 15, SLE Module for Basesystem 15 4.0.9-5.17.1

suse advisories SUSE-SU-2018:3911-2SUSE-SU-2018:3925-1SUSE-SU-2018:3911-1

  • 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 +16 more 4.0.10-r0

alpine advisories ALPINE-CVE-2018-18557

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

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

arch linux advisories AVG-790AVG-791

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-2018-18557 updated cvss 5.3

libtiff: Out-of-bounds write in tif_jbig.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

Timeline

  1. Published
  2. First public exploit (EDB-45694)

Exploit prediction

14.96% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-45694 libtiff 4.0.9 - Decodes Arbitrarily Sized JBIG into a Target Buffer dos, 2018-10-25

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/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.