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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | gnutls | 3.8.0 – < 3.8.3 | 3.8.3 |
| 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 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | gnutls28 | 3.8.3-1 | — |
| Debian 13 | gnutls28 | 3.8.3-1 | — |
| Debian 12 | gnutls28 | 3.7.9-2+deb12u2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | gnutls28 | 3.8.3-1ubuntu1 | — |
| Ubuntu 22.04 LTS | gnutls28 | 3.7.3-4ubuntu1.4 | USN-6593-1 |
| Ubuntu 20.04 LTS | gnutls28 | 3.6.13-2ubuntu1.10 | USN-6593-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | gnutls +4 | 3.7.6-23.el9_3.3 | RHSA-2024:0533 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.2 EUS | gnutls +4 | 3.7.6-21.el9_2.2 | RHSA-2024:1082 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | gnutls +4 | 3.7.6-23.el9_3.3 | ALSA-2024:0533 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | gnutls | 3.7.3-150400.4.41.3 | SUSE-SU-2024:0638-1 |
| SLES 15 SP4 | gnutls | 3.7.3-150400.4.41.3 | SUSE-SU-2024:0638-2 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP4 | gnutls | 3.7.3-150400.4.41.3 | SUSE-SU-2024:0638-2 |
| SLE Micro 5.5 | gnutls | 3.7.3-150400.4.41.3 | SUSE-SU-2024:0638-1 |
| SLE Micro 5.4 | gnutls | 3.7.3-150400.4.41.3 | SUSE-SU-2024:0638-1 |
| SLE Micro 5.3 | gnutls | 3.7.3-150400.1.3.1 | SUSE-SU-2024:1179-1 |
| SLE HPC 15 SP4 | gnutls | 3.7.3-150400.4.41.3 | SUSE-SU-2024:0638-2 |
| SUSE Manager Server 4.3 | gnutls | 3.7.3-150400.4.41.3 | SUSE-SU-2024:0638-2 |
| SUSE Manager Proxy 4.3 | gnutls | 3.7.3-150400.4.41.3 | SUSE-SU-2024:0638-2 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gnutls | 3.8.3-1.1 | openSUSE-SU-2024:13593-1 |
| openSUSE Leap 15.5 | gnutls | 3.7.3-150400.4.41.3 | SUSE-SU-2024:0638-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.4 | gnutls | 3.7.3-150400.4.41.3 | SUSE-SU-2024:0638-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | gnutls | 3.8.3-r0 | — |
| Alpine v3.23 | gnutls | 3.8.3-r0 | — |
| Alpine v3.22 | gnutls | 3.8.3-r0 | — |
| Alpine v3.21 | gnutls | 3.8.3-r0 | — |
| Alpine v3.20 | gnutls | 3.8.3-r0 | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | gnutls | 3.8.3-r0 | — |
| Alpine v3.18 | gnutls | 3.8.3-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | gnutls +4 | 3.8.0-378.amzn2023.0.4 | ALAS2023-2024-521 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | gnutls | 3.8.3-1 | — |
| Azure Linux 2 (CBL-Mariner) | gnutls | 3.7.11-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | gnutls +4 | 3.7.6-23.el9_3.3 | ELSA-2024-12336, ELSA-2024-0533 |
Advisories 15
- ALSA-2024:0533 Moderate: gnutls security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:1082 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:0533 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- SSA-794697 SSA-794697: Vulnerabilities in the Additional GNU/Linux Subsystem of the SIMATIC S7-1500 TM MFP Before V1.1 Siemens ProductCERT · Oct 13, 2026
- WID-SEC-2024-0131 GnuTLS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 31, 2026
- USN-6593-1 gnutls28 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- SUSE-SU-2024:0638-1 Security update for gnutls SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0638-2 Security update for gnutls SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13593-1 gnutls-3.8.3-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- VDE-2024-073 Phoenix Contact: Multiple Vulnerabilities in PLCnext Firmware CERT@VDE · May 22, 2025
- SUSE-SU-2024:1179-1 Security update for gnutls SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2024-12336 Moderate: gnutls security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 19, 2024
- ICSA-23-166-11 Siemens SIMATIC S7-1500 TM MFP Linux Kernel CISA ICS & IT advisories · Apr 9, 2024
- ALAS2023-2024-521 Moderate: gnutls security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 19, 2024
- ELSA-2024-0533 Moderate: gnutls security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jan 30, 2024
References
- RHSA-2024:0533 vendor-advisory
- RHSA-2024:1082 vendor-advisory
- RHSA-2024:1383 vendor-advisory
- RHSA-2024:2094 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2024-0567 vdb-entry
- RHBZ#2258544 issue-tracking
- https://gitlab.com/gnutls/gnutls/-/issues/1521
- https://lists.gnupg.org/pipermail/gnutls-help/2024-January/004841.html