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Fencer Vulns
medium 6.8

CVE-2022-4645 json

LibTIFF 4.4.0 has an out-of-bounds read in tiffcp in `tools/tiffcp.c:948`, allowing attackers to...

published 2023-03-03 3 y ago modified 2026-07-23 3 mo ago also EUVD-2022-51971 , JLSEC-2025-300

cvss
6.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

LibTIFF 4.4.0 has an out-of-bounds read in tiffcp in tools/tiffcp.c:948, allowing attackers to cause a denial-of-service via a crafted tiff file. For users that compile libtiff from sources, the fix is available with commit e8131125.

Patch / fix

  • julia Libtiff_jll 4.5.1+0
  • tiff Debian 14, Debian 13, Debian 12 4.4.0-5

debian advisories DEBIAN-CVE-2022-4645

  • tiff Ubuntu 18.04 LTS 4.0.9-5ubuntu0.8
  • tiff Ubuntu 20.04 LTS 4.1.0+git191117-2ubuntu0.20.04.6
  • tiff Ubuntu 22.04 LTS 4.3.0-6ubuntu0.2
  • tiff Ubuntu Pro 14.04 LTS 4.0.3-7ubuntu0.11+esm5
  • tiff Ubuntu Pro 16.04 LTS 4.0.6-1ubuntu0.8+esm7

ubuntu advisories UBUNTU-CVE-2022-4645

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 8 4.0.9-31.el8
  • libtiff-tools RHEL 8 4.0.9-31.el8
  • libtiff RHEL 9 4.4.0-7.el9
  • libtiff-tools RHEL 9 4.4.0-7.el9

red hat advisories RHSA-2024:3059RHSA-2023:2340

  • libtiff AlmaLinux 8 4.0.9-31.el8
  • libtiff-tools AlmaLinux 8 4.0.9-31.el8
  • libtiff AlmaLinux 9 4.4.0-7.el9
  • libtiff-tools AlmaLinux 9 4.4.0-7.el9

almalinux advisories ALSA-2024:3059ALSA-2023:2340

  • libtiff Rocky Linux 8 4.0.9-31.el8

rocky linux advisories RLSA-2024:3059

  • tiff Alpine 3.17 4.4.0-r2

alpine advisories ALPINE-CVE-2022-4645

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 CBL-Mariner 2.0 4.5.0-1

azure linux advisories AZL-13826

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2022-4645 updated cvss 5.6

libtiff: out-of-bounds read in tiffcp in tools/tiffcp.c

  • Red Hat Enterprise Linux 6 libtiff Red Hat Enterprise Linux 7 libtiff, libtiff-tools, compat-libtiff3
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 compat-libtiff3
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 8) libtiff 4.0.9-31.el8
    fixed: vendor fix RHSA-2024:3059
  • Red Hat Enterprise Linux AppStream (v. 9) libtiff 4.4.0-7.el9
    fixed: vendor fix RHSA-2023:2340
  • Red Hat Enterprise Linux CRB (v. 8) libtiff-tools 4.0.9-31.el8
    fixed: vendor fix RHSA-2024:3059
  • Red Hat Enterprise Linux CRB (v. 9) libtiff-tools 4.4.0-7.el9
    fixed: vendor fix RHSA-2023:2340

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

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gitlab.com https://gitlab.com/libtiff/libtiff/-/issues/277 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia Libtiff_jll
<4.5.1+0
4.5.1+0

Affected products

  • libtiff libtiff

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.