Gnutls: timing side-channel in the rsa-psk authentication
Priority LOW 29CWE-208Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 12 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-208.
Summary
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.
Why it matters now
EPSS 0.01267 69th percentileScored 2026-11-07
Fix Partial Red Hat: 7 advisoriesRed Hat: 12 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | — | 3.6.16-8.el8_9 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 3.6.16-8.el8_9 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support | — | 3.6.16-5.el8_6.2 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support | — | 3.6.16-7.el8_8.1 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 3.7.6-23.el9_3.3 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 3.7.6-23.el9_3.3 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | — | 3.7.6-21.el9_2.1 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-37 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-68 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-158 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-39 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-58 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-158 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-13 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-81 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-158 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-79 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-22 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-57 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-6 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-158 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-15 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-15 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-54 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-158 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-10 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-26 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-158 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-19 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-158 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-158 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-21 | Patch available | CNA |
| Red Hat | RHODF-4.15-RHEL-9 | — | v4.15.0-103 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v5.8.6-22 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v5.8.6-11 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v6.8.1-407 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v5.8.6-19 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v1.0.0-479 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v5.8.6-7 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v0.4.0-247 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v5.8.6-5 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v1.1.0-227 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v5.8.1-470 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v2.9.6-14 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v5.8.6-2 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v5.8.6-24 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v5.8.6-10 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v0.1.0-525 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v0.1.0-224 | Patch available | CNA |
| Red Hat | RHOL-5.8-RHEL-9 | — | v0.28.1-56 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | No fix listed | CNA |
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 3.6.16-8.el8_9 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 3.6.16-8.el8_9 Patch available CNA
- Red Hat Enterprise Linux 8.6 Extended Update Support VendorRed Hat Affected — Fixed in 3.6.16-5.el8_6.2 Patch available CNA
- Red Hat Enterprise Linux 8.8 Extended Update Support VendorRed Hat Affected — Fixed in 3.6.16-7.el8_8.1 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 3.7.6-23.el9_3.3 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 3.7.6-23.el9_3.3 Patch available CNA
- Red Hat Enterprise Linux 9.2 Extended Update Support VendorRed Hat Affected — Fixed in 3.7.6-21.el9_2.1 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-37 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-68 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-158 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-39 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-58 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-158 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-13 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-81 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-158 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-79 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-22 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-57 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-6 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-158 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-15 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-15 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-54 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-158 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-10 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-26 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-158 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-19 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-158 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-158 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-21 Patch available CNA
- RHODF-4.15-RHEL-9 VendorRed Hat Affected — Fixed in v4.15.0-103 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v5.8.6-22 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v5.8.6-11 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v6.8.1-407 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v5.8.6-19 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v1.0.0-479 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v5.8.6-7 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v0.4.0-247 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v5.8.6-5 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v1.1.0-227 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v5.8.1-470 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v2.9.6-14 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v5.8.6-2 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v5.8.6-24 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v5.8.6-10 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v0.1.0-525 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v0.1.0-224 Patch available CNA
- RHOL-5.8-RHEL-9 VendorRed Hat Affected — Fixed in v0.28.1-56 Patch available CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* | before 3.8.2 | Vulnerable | GNU |
| cpe:2.3:o:redhat:linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Red Hat |
| cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* | 37 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* | 38 | Vulnerable | Fedoraproject |
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* Versions before 3.8.2 Vulnerable ·GNU
- cpe:2.3:o:redhat:linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat
- cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Versions 37 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* Versions 38 Vulnerable ·Fedoraproject
Remediation
Red Hat 7 advisories
- RHSA-2024:2094 Released 2024-05-01 · Red Hat rating Moderatesecurity update Logging for Red Hat OpenShift - 5.8.6
- RHOL 5.8 for RHEL 9 openshift-logging/cluster-logging-operator-bundle, openshift-logging/cluster-logging-rhel9-operator, openshift-logging/elasticsearch-operator-bundle +14
- RHSA-2024:1383 Released 2024-03-19 · Red Hat rating ImportantRed Hat OpenShift Data Foundation 4.15.0 security, enhancement, & bug fix update
- RHODF 4.15 for RHEL 9 odf4/cephcsi-rhel9, odf4/mcg-core-rhel9, odf4/mcg-operator-bundle +23
- RHSA-2024:0533 Released 2024-01-29 · Red Hat rating Moderategnutls security update
- Red Hat Enterprise Linux AppStream (v. 9) gnutls-c++-3.7.6-23.el9_3.3, gnutls-dane-3.7.6-23.el9_3.3, gnutls-devel-3.7.6-23.el9_3.3 +1
- Red Hat Enterprise Linux BaseOS (v. 9) gnutls-3.7.6-23.el9_3.3
Show 4 more Red Hat advisories
- RHSA-2024:0451 Released 2024-01-25 · Red Hat rating Moderategnutls security update
- Red Hat Enterprise Linux AppStream EUS (v.9.2) gnutls-c++-3.7.6-21.el9_2.1, gnutls-dane-3.7.6-21.el9_2.1, gnutls-devel-3.7.6-21.el9_2.1 +1
- Red Hat Enterprise Linux BaseOS EUS (v.9.2) gnutls-3.7.6-21.el9_2.1
- RHSA-2024:0399 Released 2024-01-24 · Red Hat rating Moderategnutls security update
- Red Hat Enterprise Linux AppStream EUS (v.8.8) gnutls-c++-3.6.16-7.el8_8.1, gnutls-dane-3.6.16-7.el8_8.1, gnutls-devel-3.6.16-7.el8_8.1 +1
- Red Hat Enterprise Linux BaseOS EUS (v.8.8) gnutls-3.6.16-7.el8_8.1
- RHSA-2024:0319 Released 2024-01-22 · Red Hat rating Moderategnutls security update
- Red Hat Enterprise Linux AppStream EUS (v.8.6) gnutls-c++-3.6.16-5.el8_6.2, gnutls-dane-3.6.16-5.el8_6.2, gnutls-devel-3.6.16-5.el8_6.2 +1
- Red Hat Enterprise Linux BaseOS EUS (v.8.6) gnutls-3.6.16-5.el8_6.2
- RHSA-2024:0155 Released 2024-01-10 · Red Hat rating Moderategnutls security update
- Red Hat Enterprise Linux AppStream (v. 8) gnutls-c++-3.6.16-8.el8_9, gnutls-dane-3.6.16-8.el8_9, gnutls-devel-3.6.16-8.el8_9 +1
- Red Hat Enterprise Linux BaseOS (v. 8) gnutls-3.6.16-8.el8_9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| RHODF 4.15 for RHEL 9 | Fixed | RHSA-2024:1383 |
| RHOL 5.8 for RHEL 9 | Fixed | RHSA-2024:2094 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2024:0155 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:0533 |
| Red Hat Enterprise Linux AppStream EUS (v.8.6) | Fixed | RHSA-2024:0319 |
| Red Hat Enterprise Linux AppStream EUS (v.8.8) | Fixed | RHSA-2024:0399 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:0451 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:0155 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:0533 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.6) | Fixed | RHSA-2024:0319 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.8) | Fixed | RHSA-2024:0399 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.2) | Fixed | RHSA-2024:0451 |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-5981
- 2026-10-03 Alias added: GHSA-jvj3-gqjm-cg8p
References
Advisory 12
- RHSA-2024:0155
- RHSA-2024:0319
- RHSA-2024:0399
- RHSA-2024:0451
- RHSA-2024:0533
- RHSA-2024:1383
- RHSA-2024:2094
- https://access.redhat.com/security/cve/CVE-2023-5981
- RHBZ#2248445
- https://gnutls.org/security-new.html#GNUTLS-SA-2023-10-23
- http://www.openwall.com/lists/oss-security/2024/01/19/3
- https://lists.debian.org/debian-lts-announce/2023/11/msg00016.html
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Sources
- CVE-2023-5981 · CVE Program
- CVE-2023-5981 · NVD
- FIRST EPSS
- GHSA-jvj3-gqjm-cg8p · GitHub Advisory Database · CC BY 4.0
- CVE-2023-5981 · Red Hat security data · CC BY 4.0
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