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Fencer Vulns
high 7.5

CVE-2024-0567 json

Gnutls: rejects certificate chain with distributed trust

published 2024-01-16 2 y ago modified 2026-11-05 3 d ago also EUVD-2024-16360 , JLSEC-2026-526

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

A vulnerability was found in GnuTLS, where a cockpit (which uses gnuTLS) rejects a certificate chain with distributed trust. This issue occurs when validating a certificate chain with cockpit-certificate-ensure. This flaw allows an unauthenticated, remote client or attacker to initiate a denial of service attack.

Patch / fix

  • julia GnuTLS_jll 3.8.3+0
  • Red Hat Red Hat Enterprise Linux 9 0:3.7.6-23.el9_3.3
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support 0:3.7.6-21.el9_2.2
  • Red Hat RHODF-4.15-RHEL-9 v4.15.0-6, v4.15.0-10, v4.15.0-13, v4.15.0-15, v4.15.0-19, v4.15.0-21, v4.15.0-22, v4.15.0-26, v4.15.0-37, v4.15.0-39, v4.15.0-54, v4.15.0-57, v4.15.0-58, v4.15.0-68, v4.15.0-79, v4.15.0-81, v4.15.0-103, v4.15.0-158
  • Red Hat RHOL-5.8-RHEL-9 v0.1.0-224, v0.1.0-525, v0.4.0-247, v0.28.1-56, v1.0.0-479, v1.1.0-227, v2.9.6-14, v5.8.1-470, v5.8.6-2, v5.8.6-5, v5.8.6-7, v5.8.6-10, v5.8.6-11, v5.8.6-19, v5.8.6-22, v5.8.6-24, v6.8.1-407
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1
  • gnutls28 Debian 12 3.7.9-2+deb12u2
  • gnutls28 Debian 14, Debian 13 3.8.3-1

debian advisories DEBIAN-CVE-2024-0567

  • gnutls28 Ubuntu 22.04 LTS 3.7.3-4ubuntu1.4
  • gnutls28 Ubuntu 24.04 LTS 3.8.3-1ubuntu1

ubuntu advisories UBUNTU-CVE-2024-0567

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

  • gnutls RHEL 9 3.7.6-23.el9_3.3
  • gnutls-c++ RHEL 9 3.7.6-23.el9_3.3
  • gnutls-dane RHEL 9 3.7.6-23.el9_3.3
  • gnutls-utils RHEL 9 3.7.6-23.el9_3.3
  • gnutls RHEL 9.2 EUS 3.7.6-21.el9_2.2
  • gnutls-c++ RHEL 9.2 EUS 3.7.6-21.el9_2.2
  • gnutls-dane RHEL 9.2 EUS 3.7.6-21.el9_2.2
  • gnutls-utils RHEL 9.2 EUS 3.7.6-21.el9_2.2

red hat advisories RHSA-2024:1082RHSA-2024:0533

  • gnutls SLE Module for Basesystem 15 SP5, SLE Micro 5.5, SLE Micro 5.4 +8 more 3.7.3-150400.4.41.3
  • gnutls SLE Micro 5.3 3.7.3-150400.1.3.1

suse advisories SUSE-SU-2024:0638-2SUSE-SU-2024:1179-1SUSE-SU-2024:0638-1

  • gnutls openSUSE Tumbleweed 3.8.3-1.1

opensuse advisories openSUSE-SU-2024:13593-1

  • gnutls AlmaLinux 9 3.7.6-23.el9_3.3
  • gnutls-c++ AlmaLinux 9 3.7.6-23.el9_3.3
  • gnutls-dane AlmaLinux 9 3.7.6-23.el9_3.3
  • gnutls-utils AlmaLinux 9 3.7.6-23.el9_3.3

almalinux advisories ALSA-2024:0533

  • gnutls Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 3.8.3-r0

alpine advisories ALPINE-CVE-2024-0567

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

  • gnutls CBL-Mariner 2.0 3.7.11-1
  • gnutls Azure Linux 3.0 3.8.3-1

azure linux advisories AZL-33340AZL-34740

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-2024-0567 updated cvss 7.5

gnutls: rejects certificate chain with distributed trust

  • Red Hat Enterprise Linux 6 gnutls, gnutls-guile, gnutls-utils Red Hat Enterprise Linux 7 gnutls, cockpit, cockpit-ws, gnutls-c++, gnutls-dane, gnutls-utils, +3 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 9) gnutls-c++ 3.7.6-23.el9_3.3, gnutls-dane 3.7.6-23.el9_3.3, gnutls-utils 3.7.6-23.el9_3.3
    fixed: vendor fix RHSA-2024:0533
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) gnutls-c++ 3.7.6-21.el9_2.2, gnutls-dane 3.7.6-21.el9_2.2, gnutls-utils 3.7.6-21.el9_2.2
    fixed: vendor fix RHSA-2024:1082
  • Red Hat Enterprise Linux BaseOS (v. 9) gnutls 3.7.6-23.el9_3.3
    fixed: vendor fix RHSA-2024:0533
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) gnutls 3.7.6-21.el9_2.2
    fixed: vendor fix RHSA-2024:1082
  • Red Hat RHODF 4.15 for RHEL 9 odf4/cephcsi-rhel9 v4.15.0-37, odf4/odf-cli-rhel9 v4.15.0-22, odf4/mcg-core-rhel9 v4.15.0-68, odf4/odf-console-rhel9 v4.15.0-57, odf4/mcg-rhel9-operator v4.15.0-39, odf4/ocs-rhel9-operator v4.15.0-79, +20 more
    fixed: vendor fix RHSA-2024:1383
  • Red Hat RHOL 5.8 for RHEL 9 openshift-logging/fluentd-rhel9 v5.8.6-5, openshift-logging/vector-rhel9 v0.28.1-56, openshift-logging/eventrouter-rhel9 v0.4.0-247, openshift-logging/logging-loki-rhel9 v2.9.6-14, openshift-logging/loki-rhel9-operator v5.8.6-10, openshift-logging/loki-operator-bundle v5.8.6-24, +11 more
    fixed: vendor fix RHSA-2024:2094
  • Red Hat Enterprise Linux 8 gnutls, cockpit, cockpit-ws, gnutls-c++, gnutls-dane, gnutls-utils, +2 more Red Hat Enterprise Linux 9 cockpit, cockpit-ws, cockpit-pcp, cockpit-bridge, cockpit-system, cockpit-storaged, +2 more Red Hat OpenShift Container Platform 3.11 cockpit, cockpit-kubernetes
    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

cisa ICSA-23-166-11 updated cvss 7.5

Siemens SIMATIC S7-1500 TM MFP Linux Kernel

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

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

Exploit prediction

1.39% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gitlab.com https://gitlab.com/gnutls/gnutls/-/issues/1521 referenced PoC, tagged "exploit" by a source, unverified
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2258544 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia GnuTLS_jll
>=3.7.1+0, <3.8.3+0
3.8.3+0

Affected products

  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
  • Red Hat RHODF-4.15-RHEL-9
  • Red Hat RHOL-5.8-RHEL-9
  • 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 OpenShift Container Platform 3.11
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Classification

Weakness
  • CWE-347 Improper Verification of Cryptographic Signature

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.