Description
A vulnerability was found that the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS#1 v1.5 padding.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support | — | — |
| 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 | — | — |
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 | 3.8.2-1 | — |
| Debian 13 | gnutls28 | 3.8.2-1 | — |
| Debian 12 | gnutls28 | 3.7.9-2+deb12u1 | — |
| Debian 10 | gnutls28 | 3.6.7-4+deb10u11 | DLA-3660-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | gnutls28 | 3.7.3-4ubuntu1.3 | USN-6499-1 |
| Ubuntu 20.04 LTS | gnutls28 | 3.6.13-2ubuntu1.9 | USN-6499-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | gnutls28 | 3.5.18-1ubuntu1.6+esm1 | USN-6499-2 |
| Ubuntu Pro 16.04 LTS | gnutls28 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | gnutls +4 | 3.7.6-23.el9_3.3 | RHSA-2024:0533 |
| RHEL 8 | gnutls +4 | 3.6.16-8.el8_9 | RHSA-2024:0155 |
Show 3 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_2.1 | RHSA-2024:0451 |
| RHEL 8.8 EUS | gnutls +4 | 3.6.16-7.el8_8.1 | RHSA-2024:0399 |
| RHEL 8.6 EUS | gnutls +4 | 3.6.16-5.el8_6.2 | RHSA-2024:0319 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | gnutls +4 | 3.7.6-23.el9_3.3 | ALSA-2024:0533 |
| AlmaLinux 8 | gnutls +4 | 3.6.16-8.el8_9 | ALSA-2024:0627, ALSA-2024:0155 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | gnutls | 3.6.16-8.el8_9 | RLSA-2024:0155 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | gnutls | 3.7.3-150400.4.38.1 | SUSE-SU-2023:4983-1 |
| SLES 15 SP4 | gnutls | 3.7.3-150400.4.38.1 | SUSE-SU-2023:4983-1 |
| SLES 15 SP3 | gnutls | 3.6.7-150200.14.28.1 | SUSE-SU-2024:0860-1, SUSE-SU-2023:4986-1 |
| SLES 15 SP2 | gnutls | 3.6.7-150200.14.28.1 | SUSE-SU-2024:0860-1, SUSE-SU-2023:4986-1 |
| SLES 15 SP1 | gnutls | 3.6.7-150000.6.50.1 | SUSE-SU-2023:4952-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | gnutls | 3.6.7-150200.14.28.1 | SUSE-SU-2024:0860-1, SUSE-SU-2023:4986-1 |
| SLES for SAP 15 SP2 | gnutls | 3.6.7-150200.14.28.1 | SUSE-SU-2024:0860-1, SUSE-SU-2023:4986-1 |
| SLES for SAP 15 SP1 | gnutls | 3.6.7-150000.6.50.1 | SUSE-SU-2023:4952-1 |
| SLE Micro 5.5 | gnutls | 3.7.3-150400.4.38.1 | SUSE-SU-2023:4983-1 |
| SLE Micro 5.4 | gnutls | 3.7.3-150400.4.38.1 | SUSE-SU-2023:4983-1 |
| SLE Micro 5.3 | gnutls | 3.7.3-150400.1.3.1 | SUSE-SU-2024:1179-1 |
| SLE Micro 5.2 | gnutls | 3.6.7-150200.14.28.1 | SUSE-SU-2024:0860-1, SUSE-SU-2023:4986-1 |
| SLE Micro 5.1 | gnutls | 3.6.7-150200.14.28.1 | SUSE-SU-2024:0860-1, SUSE-SU-2023:4986-1 |
| SLE HPC 15 SP3 | gnutls | 3.6.7-150200.14.28.1 | SUSE-SU-2024:0860-1, SUSE-SU-2023:4986-1 |
| SLE HPC 15 SP2 | gnutls | 3.6.7-150200.14.28.1 | SUSE-SU-2024:0860-1, SUSE-SU-2023:4986-1 |
| SLE HPC 15 SP1 | gnutls | 3.6.7-150000.6.50.1 | SUSE-SU-2023:4952-1 |
| SUSE Enterprise Storage 7.1 | gnutls | 3.6.7-150200.14.28.1 | SUSE-SU-2024:0860-1, SUSE-SU-2023:4986-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gnutls | 3.8.2-1.1 | openSUSE-SU-2024:13444-1 |
| openSUSE Leap 15.5 | gnutls | 3.7.3-150400.4.38.1 | SUSE-SU-2023:4983-1 |
| openSUSE Leap 15.4 | gnutls | 3.7.3-150400.4.38.1 | SUSE-SU-2023:4983-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.4 | gnutls | 3.7.3-150400.4.38.1 | SUSE-SU-2023:4983-1 |
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 | 3.8.0-377.amzn2023.0.3 | ALAS2023-2024-463 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 |
| Oracle Linux 8 | gnutls +4 | 3.6.16-8.el8_9 | ELSA-2024-0155 |
Advisories 28
- ALSA-2024:0533 Moderate: gnutls security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:0155 Moderate: gnutls security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:0627 Moderate: gnutls security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:0533 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:0451 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:0399 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:0319 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:0155 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- WID-SEC-2023-2978 GnuTLS: Schwachstelle ermöglicht Offenlegung von Informationen BSI CERT-Bund (WID) · Aug 31, 2026
- USN-6499-1 gnutls28 vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-6499-2 gnutls28 vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-3660-1 gnutls28 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2024:0155 Moderate: gnutls security update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2024:0860-1 Security update for gnutls SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4986-1 Security update for gnutls SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13444-1 gnutls-3.8.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4983-1 Security update for gnutls SUSE / openSUSE Security Updates · Feb 4, 2026
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- SUSE-SU-2024:1179-1 Security update for gnutls SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2023:4952-1 Security update for gnutls SUSE / openSUSE Security Updates · May 2, 2025
- NCSC-2025-0021 Kwetsbaarheden verholpen in Oracle Communications NCSC-NL (Netherlands) · Jan 22, 2025
- NCSC-2024-0293 Kwetsbaarheden verholpen in Oracle Communications Applications NCSC-NL (Netherlands) · Jul 17, 2024
- WID-SEC-2024-1643 Oracle Communications Applications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 16, 2024
- ELSA-2024-12336 Moderate: gnutls security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 19, 2024
- ELSA-2024-0533 Moderate: gnutls security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jan 30, 2024
- ELSA-2024-0155 Moderate: gnutls security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jan 11, 2024
- ALAS2023-2024-463 Moderate: gnutls security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jan 8, 2024
References
- RHSA-2024:0155 vendor-advisory
- RHSA-2024:0319 vendor-advisory
- RHSA-2024:0399 vendor-advisory
- RHSA-2024:0451 vendor-advisory
- RHSA-2024:0533 vendor-advisory
- RHSA-2024:1383 vendor-advisory
- RHSA-2024:2094 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2023-5981 vdb-entry
- RHBZ#2248445 issue-tracking
- https://gnutls.org/security-new.html#GNUTLS-SA-2023-10-23