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CVE-2024-0567

Gnutls: rejects certificate chain with distributed trust

HIGH
7.5
CVSS Score
Published: January 16, 2024 at 02:01 PM UTC
Updated: October 15, 2026 at 01:17 AM UTC
6 products affected across 5 vendorsDebian LinuxFedoraActive IQ Unified Manager

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
11.0
Fedora· Fedora Projectrpm
95%
3839
Gnutls· Gnu
95%
3.7.0 ≤ v < 3.8.3
Affected range stops below 3.8.3, so it looks safe — our inference, not a vendor statement
Active IQ Unified Manager· NetAppnpm
95%
All versions
Enterprise Linux· Red Hatrpm
90%
All versions
Vendor states this is fixed in 0:3.7.6-21.el9_2.2 (unaffected)
Vendor states this is fixed in 0:3.7.6-23.el9_3.3 (unaffected)
Vendor states this is fixed in 8 (unaffected)
Vendor states this is fixed in 6 (unknown)
Vendor states this is fixed in 7 (unknown)
OpenShift Container Platform· Red Hatcontainer
90%
All versions
Vendor states this is fixed in 3.11 (unaffected)

References (13)

Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2024:0533
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2024:1082
Vendor Advisoryx_refsource_REDHAT
Source: [email protected]
https://access.redhat.com/errata/RHSA-2024:1383
Vendor Advisoryx_refsource_REDHAT
Source: [email protected]
https://access.redhat.com/errata/RHSA-2024:2094
VDB Entryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/security/cve/CVE-2024-0567
Issue Trackingx_refsource_REDHATExploitThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2258544
ExploitIssue TrackingPatchVendor Advisory
Source: [email protected]
https://gitlab.com/gnutls/gnutls/-/issues/1521
Mailing List
Source: [email protected]
https://lists.gnupg.org/pipermail/gnutls-help/2024-January/004841.html

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-347

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