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Fencer Vulns
medium 6.5

CVE-2020-19144 json

Buffer Overflow in LibTiff v4.0.10 allows attackers to cause a denial of service via the 'in _TIFFmemcpy' funtion in the component 'tif_uni…

published 2021-09-09 5 y ago modified 2026-07-25 3 mo ago also EUVD-2020-11051 , JLSEC-2026-483

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

Buffer Overflow in LibTiff v4.0.10 allows attackers to cause a denial of service via the 'in _TIFFmemcpy' funtion in the component 'tif_unix.c'.

Patch / fix

  • julia Libtiff_jll 4.1.0+0
  • tiff Debian 14, Debian 13, Debian 12 4.0.10+git190814-1

debian advisories DEBIAN-CVE-2020-19144

  • tiff Ubuntu 18.04 LTS 4.0.9-5ubuntu0.7
  • tiff Ubuntu Pro 14.04 LTS 4.0.3-7ubuntu0.11+esm2
  • tiff Ubuntu Pro 16.04 LTS 4.0.6-1ubuntu0.8+esm2

ubuntu advisories UBUNTU-CVE-2020-19144

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

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-2020-19144 updated cvss 7.5

libtiff: heap-based buffer overflow in _TIFFmemcpy() in tif_unix.c

  • Red Hat Enterprise Linux 6 libtiff Red Hat Enterprise Linux 7 libtiff, libtiff-tools, compat-libtiff3 Red Hat Enterprise Linux 8 libtiff, libtiff-tools, compat-libtiff3 Red Hat Enterprise Linux 9 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

1.59% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/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
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia Libtiff_jll
<4.1.0+0
4.1.0+0

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.