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NVD / CVE Program· CNA redhat

CVE-2024-0567: Gnutls: rejects certificate chain with distributed trust

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.3% (FIRST EPSS); higher than 72% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: gitlab.com/gnutls/gnutls gnutls 3.8.3.

Low priority for now. Upgrade to gitlab.com/gnutls/gnutls gnutls 3.8.3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Jan 16, 2024
Updated
Oct 15, 2026
EPSS
1.3% · 72th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

CISA SSVC decision

Exploitation
proof of concept
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.5
CNA · redhat
7.5
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-0567

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
gnugnutls
fedoraprojectfedora
netappactive iq unified manager
debiandebian linux

Check your server's TLS configuration

The GnuTLS version can't be seen from outside; the free SSL checker tests your certificate, enabled TLS versions and weak ciphers. Confirm the version on your server with the package manager.

Run the SSL check

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux11.0
  • fedoraproject fedora38
  • fedoraproject fedora39
  • gnu gnutls3.7.0 and later · before 3.8.3
  • netapp active iq unified managerall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • gitlab.com/gnutls/gnutls gnutls

    • 3.8.0 and later · before 3.8.3affected · semver

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsunknown
    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsunknown
    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 9

    • 0:3.7.6-23.el9_3.3 and laternot affected · rpm
    • 0:3.7.6-23.el9_3.3 and laternot affected · rpm
    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support

    • 0:3.7.6-21.el9_2.2 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 3.11

    • all versionsunknown

  • Red Hat RHODF-4.15-RHEL-9

    • v4.15.0-37 and laternot affected · rpm
    • v4.15.0-68 and laternot affected · rpm
    • v4.15.0-158 and laternot affected · rpm
    • v4.15.0-39 and laternot affected · rpm
    • v4.15.0-58 and laternot affected · rpm
    • v4.15.0-158 and laternot affected · rpm
    • v4.15.0-13 and laternot affected · rpm
    • v4.15.0-81 and laternot affected · rpm
    • v4.15.0-158 and laternot affected · rpm
    • v4.15.0-79 and laternot affected · rpm

  • Red Hat RHOL-5.8-RHEL-9

    • v5.8.6-22 and laternot affected · rpm
    • v5.8.6-11 and laternot affected · rpm
    • v6.8.1-407 and laternot affected · rpm
    • v5.8.6-19 and laternot affected · rpm
    • v1.0.0-479 and laternot affected · rpm
    • v5.8.6-7 and laternot affected · rpm
    • v0.4.0-247 and laternot affected · rpm
    • v5.8.6-5 and laternot affected · rpm
    • v1.1.0-227 and laternot affected · rpm
    • v5.8.1-470 and laternot affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:9gnutlsbefore 3.7.6-23.el9_3.33.7.6-23.el9_3.3
AlmaLinux:9gnutls-c++before 3.7.6-23.el9_3.33.7.6-23.el9_3.3
AlmaLinux:9gnutls-danebefore 3.7.6-23.el9_3.33.7.6-23.el9_3.3
AlmaLinux:9gnutls-develbefore 3.7.6-23.el9_3.33.7.6-23.el9_3.3
AlmaLinux:9gnutls-utilsbefore 3.7.6-23.el9_3.33.7.6-23.el9_3.3
Alpine:v3.18gnutlsfrom 3.7.0 · before 3.8.3-r03.8.3-r0
Debian:12gnutls28before 3.7.9-2+deb12u23.7.9-2+deb12u2
Debian:13gnutls28before 3.8.3-13.8.3-1
openSUSE:Leap Micro 5.4gnutlsbefore 3.7.3-150400.4.41.33.7.3-150400.4.41.3
openSUSE:Tumbleweedgnutlsbefore 3.8.3-1.13.8.3-1.1
Red Hat:enterprise_linux:9::appstreamgnutls-c++before 0:3.7.6-23.el9_3.30:3.7.6-23.el9_3.3
Red Hat:enterprise_linux:9::appstreamgnutls-c++-debuginfobefore 0:3.7.6-23.el9_3.30:3.7.6-23.el9_3.3
Red Hat:enterprise_linux:9::appstreamgnutls-danebefore 0:3.7.6-23.el9_3.30:3.7.6-23.el9_3.3
Red Hat:enterprise_linux:9::appstreamgnutls-dane-debuginfobefore 0:3.7.6-23.el9_3.30:3.7.6-23.el9_3.3
Red Hat:enterprise_linux:9::appstreamgnutls-debuginfobefore 0:3.7.6-23.el9_3.30:3.7.6-23.el9_3.3
Red Hat:enterprise_linux:9::appstreamgnutls-debugsourcebefore 0:3.7.6-23.el9_3.30:3.7.6-23.el9_3.3
Red Hat:enterprise_linux:9::appstreamgnutls-develbefore 0:3.7.6-23.el9_3.30:3.7.6-23.el9_3.3
Red Hat:enterprise_linux:9::appstreamgnutls-utilsbefore 0:3.7.6-23.el9_3.30:3.7.6-23.el9_3.3
Red Hat:enterprise_linux:9::appstreamgnutls-utils-debuginfobefore 0:3.7.6-23.el9_3.30:3.7.6-23.el9_3.3
Red Hat:enterprise_linux:9::baseosgnutlsbefore 0:3.7.6-23.el9_3.30:3.7.6-23.el9_3.3
Red Hat:rhel_eus:9.2::appstreamgnutls-c++before 0:3.7.6-21.el9_2.20:3.7.6-21.el9_2.2
Red Hat:rhel_eus:9.2::appstreamgnutls-c++-debuginfobefore 0:3.7.6-21.el9_2.20:3.7.6-21.el9_2.2
Red Hat:rhel_eus:9.2::appstreamgnutls-danebefore 0:3.7.6-21.el9_2.20:3.7.6-21.el9_2.2
Red Hat:rhel_eus:9.2::appstreamgnutls-dane-debuginfobefore 0:3.7.6-21.el9_2.20:3.7.6-21.el9_2.2

+8

Same product

gnu: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-5334Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attacker
    49Plan
  • CVE-2019-3829A vulnerability was found in gnutls versions from 3.5.8 before 3.6.7.
    48Plan
  • CVE-2008-1948The _gnutls_server_name_recv_params function in lib/ext_server_name.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 does not properly c
    44Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-0361Feb 15, 2023 · A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS.
    29Monitor
  • ← EarlierCVE-2024-0553Jan 16, 2024 · Gnutls: incomplete fix for cve-2023-5981
    30Monitor
  • Later →CVE-2025-32988Jul 10, 2025 · Gnutls: vulnerability in gnutls othername san export
    32Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
gitlab.com/gnutls/gnutls gnutls3.8.3Vendor (CNA)
almalinux:gnutls3.7.6-23.el9_3.3 · AlmaLinux:9Package registry (OSV)
almalinux:gnutls-c++3.7.6-23.el9_3.3 · AlmaLinux:9Package registry (OSV)
almalinux:gnutls-dane3.7.6-23.el9_3.3 · AlmaLinux:9Package registry (OSV)
almalinux:gnutls-devel3.7.6-23.el9_3.3 · AlmaLinux:9Package registry (OSV)
almalinux:gnutls-utils3.7.6-23.el9_3.3 · AlmaLinux:9Package registry (OSV)
alpine:gnutls3.8.3-r0 · Alpine:v3.18Package registry (OSV)
debian:gnutls283.7.9-2+deb12u2 · Debian:12Package registry (OSV)
opensuse:gnutls3.7.3-150400.4.41.3 · openSUSE:Leap Micro 5.4Package registry (OSV)
red hat:gnutls0:3.7.6-23.el9_3.3 · Red Hat:enterprise_linux:9::baseosPackage registry (OSV)
red hat:gnutls-c++0:3.7.6-23.el9_3.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gnutls-c++-debuginfo0:3.7.6-23.el9_3.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gnutls-dane0:3.7.6-23.el9_3.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gnutls-dane-debuginfo0:3.7.6-23.el9_3.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gnutls-debuginfo0:3.7.6-23.el9_3.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gnutls-debugsource0:3.7.6-23.el9_3.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gnutls-devel0:3.7.6-23.el9_3.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gnutls-utils0:3.7.6-23.el9_3.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gnutls-utils-debuginfo0:3.7.6-23.el9_3.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
suse:gnutls3.7.3-150400.4.41.3 · SUSE:Linux Enterprise Micro 5.4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-347 · Improper Verification of Cryptographic Signature

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Root cause

The verifier takes the algorithm to verify with from the token’s own header. Untrusted data ends up deciding its own verification rule.

The bug in code

The whole CWE-347 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
const claims = jwt.verify(token, publicKey);

Fixed

ts
const claims = jwt.verify(token, publicKey, {  algorithms: ["RS256"],  issuer: "https://id.example.com",  audience: "portal",});

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records