Description
Libksba before 1.6.3 is prone to an integer overflow vulnerability in the CRL signature parser.
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 | libksba | 1.6.3-1 | — |
| Debian 13 | libksba | 1.6.3-1 | — |
| Debian 12 | libksba | 1.6.3-1 | — |
| Debian 11 | libksba | 1.5.0-3+deb11u2 | DSA-5305-1 |
| Debian 10 | libksba | 1.3.5-2+deb10u2 | DLA-3248-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | libksba | 1.6.0-2ubuntu0.2 | USN-5787-1 |
| Ubuntu 20.04 LTS | libksba | 1.3.5-2ubuntu0.20.04.2 | USN-5787-1 |
| Ubuntu 18.04 LTS | libksba | 1.3.5-2ubuntu0.18.04.2 | USN-5787-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | libksba | 1.3.3-1ubuntu0.16.04.1+esm2 | USN-5787-2 |
| Ubuntu Pro 14.04 LTS | libksba | 1.3.0-3ubuntu0.14.04.2+esm2 | USN-5787-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | libksba +1 | 1.5.1-6.el9_1 | RHSA-2023:0626 |
| RHEL 8 | libksba +1 | 1.3.5-9.el8_7 | RHSA-2023:0625 |
| RHEL 7 | libksba +1 | 1.3.0-7.el7_9 | RHSA-2023:0530 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhev Hypervisor 4 | redhat-virtualization-host +1 | 4.5.3-202302150956_8.6 | RHSA-2023:0859 |
| RHEL 9.0 EUS | libksba +1 | 1.5.1-6.el9_0 | RHSA-2023:0629 |
| RHEL 8.6 EUS | libksba +1 | 1.3.5-9.el8_6 | RHSA-2023:0594 |
| RHEL 8.4 EUS | libksba +1 | 1.3.5-9.el8_4 | RHSA-2023:0624 |
| RHEL 8.2 TUS | libksba | 1.3.5-9.el8_2 | RHSA-2023:0592 |
| RHEL 8.2 E4S | libksba | 1.3.5-9.el8_2 | RHSA-2023:0592 |
| RHEL 8.2 AUS | libksba | 1.3.5-9.el8_2 | RHSA-2023:0592 |
| RHEL 8.1 E4S | libksba | 1.3.5-9.el8_1 | RHSA-2023:0593 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | libksba +1 | 1.5.1-6.el9_1 | ALSA-2023:0626 |
| AlmaLinux 8 | libksba +1 | 1.3.5-9.el8_7 | ALSA-2023:0625 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | libksba | 1.5.1-6.el9_1 | RLSA-2023:0626 |
| Rocky Linux 8 | libksba | 1.3.5-9.el8_7 | RLSA-2023:0625 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-1 |
| SLES 15 SP3 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SLES 15 SP2 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SLES 15 SP1 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SLES 12 SP5 | libksba | 1.3.0-24.6.1 | SUSE-SU-2023:0031-1 |
Show 22 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | libksba | 1.3.0-24.6.1 | SUSE-SU-2023:0031-2 |
| SLES 12 SP2 | libksba | 1.3.0-24.6.1 | SUSE-SU-2023:0031-2 |
| SLES for SAP 15 SP3 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SLES for SAP 15 SP2 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SLES for SAP 15 SP1 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SLES for SAP 12 SP5 | libksba | 1.3.0-24.6.1 | SUSE-SU-2023:0031-1 |
| SLES for SAP 12 SP4 | libksba | 1.3.0-24.6.1 | SUSE-SU-2023:0031-2 |
| SLE Real Time 15 SP3 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-1 |
| SLE Micro 5.3 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-1 |
| SLE Micro 5.2 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-1 |
| SLE Micro 5.1 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-1 |
| SLE HPC 15 SP3 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SLE HPC 15 SP2 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SLE HPC 15 SP1 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SUSE OpenStack Cloud Crowbar 9 | libksba | 1.3.0-24.6.1 | SUSE-SU-2023:0031-2 |
| SUSE OpenStack Cloud 9 | libksba | 1.3.0-24.6.1 | SUSE-SU-2023:0031-2 |
| SUSE Manager Server 4.2 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SUSE Manager Retail Branch Server 4.2 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SUSE Manager Proxy 4.2 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SUSE Enterprise Storage 7.1 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SUSE Enterprise Storage 7 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
| SUSE Enterprise Storage 6 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-2 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libksba | 1.6.3-1.1 | openSUSE-SU-2024:12595-1 |
| openSUSE Leap 15.4 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.3 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-1 |
| openSUSE Leap Micro 5.2 | libksba | 1.3.5-150000.4.6.1 | SUSE-SU-2023:0056-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libksba | 1.6.3-r0 | — |
| Alpine v3.23 | libksba | 1.6.3-r0 | — |
| Alpine v3.22 | libksba | 1.6.3-r0 | — |
| Alpine v3.21 | libksba | 1.6.3-r0 | — |
| Alpine v3.20 | libksba | 1.6.3-r0 | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libksba | 1.6.3-r0 | — |
| Alpine v3.18 | libksba | 1.6.3-r0 | — |
| Alpine v3.17 | libksba | 1.6.3-r0 | — |
| Alpine v3.16 | libksba | 1.6.3-r0 | — |
| Alpine v3.15 | libksba | 1.6.3-r0 | — |
| Alpine v3.14 | libksba | 1.5.1-r1 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | libksba +1 | 1.3.0-6.amzn2.0.1 | ALAS2-2023-2041 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | libksba | 1.6.3-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | libksba +1 | 1.5.1-6.el9_1 | ELSA-2023-0626 |
| Oracle Linux 8 | libksba +1 | 1.3.5-9.el8_7 | ELSA-2023-0625 |
| Oracle Linux 7 | libksba +1 | 1.3.0-7.el7_9 | ELSA-2023-0530 |
Advisories 36
- ALSA-2023:0626 Important: libksba security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:0625 Important: libksba security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2024-0794 Dell ECS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- RHSA-2023:0859 Red Hat Security Advisory: Red Hat Virtualization Host 4.4.z SP 1 security update batch#4 (oVirt-4.5.3-4) Red Hat Security Advisories (RHSA) · Aug 7, 2026
- USN-5787-2 libksba vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2023:0624 Red Hat Security Advisory: libksba security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:0629 Red Hat Security Advisory: libksba security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:0594 Red Hat Security Advisory: libksba security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:0625 Red Hat Security Advisory: libksba security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:0626 Red Hat Security Advisory: libksba security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:0530 Red Hat Security Advisory: libksba security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-5787-1 libksba vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5305-1 libksba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3248-1 libksba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:0625 Important: libksba security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2023:0626 Important: libksba security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2023:0056-1 Security update for libksba SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12595-1 libksba-devel-1.6.3-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0031-2 Security update for libksba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0031-1 Security update for libksba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0056-2 Security update for libksba SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2023:0593 Red Hat Security Advisory: libksba security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0592 Red Hat Security Advisory: libksba security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- WID-SEC-2023-1542 Red Hat OpenShift: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 18, 2025
- SSA-455250 SSA-455250: Multiple Vulnerabilities in Palo Alto Networks Virtual NGFW on RUGGEDCOM APE1808 Devices Before V11.1.2-h3 Siemens ProductCERT · May 13, 2025
- ICSA-24-102-04 Siemens RUGGEDCOM APE1808 CISA ICS & IT advisories · May 13, 2025
- WID-SEC-2024-1307 Red Hat OpenShift Service Mesh Containers: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 5, 2025
- WID-SEC-2023-0222 Red Hat Enterprise Linux: Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · Jul 18, 2024
- ICSA-24-046-11 Siemens SCALANCE XCM-/XRM-300 CISA ICS & IT advisories · Feb 13, 2024
- SSA-806742 SSA-806742: Multiple Vulnerabilities in SCALANCE XCM-/XRM-300 before V2.4 Siemens ProductCERT · Feb 13, 2024
- WID-SEC-2023-1021 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 29, 2023
- ALAS2-2023-2041 Important: libksba security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 16, 2023
- WID-SEC-2023-0419 IBM MQ: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 19, 2023
- ELSA-2023-0626 Important: libksba security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Feb 8, 2023
- ELSA-2023-0625 Important: libksba security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 7, 2023
- ELSA-2023-0530 Important: libksba security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 30, 2023
References
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git%3Ba=commit%3Bh=f61a5ea4e0f6a80fd4b28ef0174bee77793cf070
- https://dev.gnupg.org/T6284
- DSA-5305 vendor-advisory
- [debian-lts-announce] 20221224 [SECURITY] [DLA 3248-1] libksba security update mailing-list
- GLSA-202212-07 vendor-advisory
- https://security.netapp.com/advisory/ntap-20230316-0011/