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Fencer Vulns
medium 6.5

CVE-2023-6277 json

Libtiff: out-of-memory in tiffopen via a craft file

published 2023-11-24 2 y ago modified 2026-11-05 4 d ago also EUVD-2023-58521

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

An out-of-memory flaw was found in libtiff. Passing a crafted tiff file to TIFFOpen() API may allow a remote attacker to cause a denial of service via a craft input with size smaller than 379 KB.

Patch / fix

  • libtiff libtiff 4.7.0
  • tiff Debian 14, Debian 13 4.5.1+git230720-2

debian advisories DEBIAN-CVE-2023-6277

  • tiff Ubuntu 20.04 LTS 4.1.0+git191117-2ubuntu0.20.04.12
  • tiff Ubuntu 22.04 LTS 4.3.0-6ubuntu0.8
  • tiff Ubuntu Pro 14.04 LTS 4.0.3-7ubuntu0.11+esm12
  • tiff Ubuntu Pro 16.04 LTS 4.0.6-1ubuntu0.8+esm15
  • tiff Ubuntu Pro 18.04 LTS 4.0.9-5ubuntu0.10+esm5

ubuntu advisories UBUNTU-CVE-2023-6277

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 CBL-Mariner 2.0, Azure Linux 3.0 4.6.0-3

azure linux advisories AZL-32049AZL-34953

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-2023-6277 updated cvss 6.5

libtiff: Out-of-memory in TIFFOpen via a craft file

  • 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 libtiff, libtiff-tools, compat-libtiff3 Red Hat Enterprise Linux 9 libtiff, libtiff-tools
    affected: 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

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
12 mo ago

Exploit prediction

1.82% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gitlab.com https://gitlab.com/libtiff/libtiff/-/issues/614 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

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

Affected products

  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Upstream NVD CPE data marks all versions as affected. The upstream fix for issue #614 is included in libtiff 4.7.0; confirmed by the release notes, fixing commit ancestry, and Debian's tracker.