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

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.

Classification

CVE ID: CVE-2024-0567

Problem Types

Improper Verification of Cryptographic Signature

Affected Products

Vendor: , Red Hat

Product: , Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.2 Extended Update Support, RHODF-4.15-RHEL-9, RHOL-5.8-RHEL-9, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat OpenShift Container Platform 3.11

Exploit Prediction Scoring System (EPSS)

EPSS Score: 1.09% (probability of being exploited)

EPSS Percentile: 76.92% (scored less or equal to compared to others)

EPSS Date: 2025-06-19 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: poc

SSVC Technical Impact: partial

SSVC Automatable: true

References

https://nvd.nist.gov/vuln/detail/CVE-2024-0567
https://access.redhat.com/errata/RHSA-2024:0533
https://access.redhat.com/errata/RHSA-2024:1082
https://access.redhat.com/errata/RHSA-2024:1383
https://access.redhat.com/errata/RHSA-2024:2094
https://access.redhat.com/security/cve/CVE-2024-0567
https://bugzilla.redhat.com/show_bug.cgi?id=2258544
https://gitlab.com/gnutls/gnutls/-/issues/1521
https://lists.gnupg.org/pipermail/gnutls-help/2024-January/004841.html

Timeline