Description
A read buffer overrun can be triggered in X.509 certificate verification,
specifically in name constraint checking. Note that this occurs
after certificate chain signature verification and requires either a
CA to have signed the malicious certificate or for the application to
continue certificate verification despite failure to construct a path
to a trusted issuer.
The read buffer overrun might result in a crash which could lead to
a denial of service attack. In theory it could also result in the disclosure
of private memory contents (such as private keys, or sensitive plaintext)
although we are not aware of any working exploit leading to memory
contents disclosure as of the time of release of this advisory.
In a TLS client, this can be triggered by connecting to a malicious
server. In a TLS server, this can be triggered if the server requests
client authentication and a malicious client connects.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenSSL | OpenSSL | 3.0.0 – < 3.0.8 | 3.0.8 |
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 | openssl | 3.0.8-1 | — |
| Debian 13 | openssl | 3.0.8-1 | — |
| Debian 12 | openssl | 3.0.8-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | openssl | 3.0.2-0ubuntu1.8 | USN-5844-1 |
| Ubuntu 20.04 LTS | openssl | 1.1.1f-1ubuntu2.17 | USN-5844-1 |
| Ubuntu 18.04 LTS | openssl | 1.1.1-1ubuntu2.1~18.04.21 | USN-5844-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | openssl +3 | 1:3.0.1-47.el9_1 | RHSA-2023:0946 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | openssl +3 | 1:3.0.1-46.el9_0 | RHSA-2023:1199 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | openssl +3 | 1:3.0.1-47.el9_1 | ALSA-2023:0946 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | openssl | 1:3.0.1-47.el9_1 | RLSA-2023:0946 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | openssl-3 | 3.0.1-150400.4.17.1 | SUSE-SU-2023:0312-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openssl-3 | 3.0.8-1.1 | openSUSE-SU-2024:12716-1 |
| openSUSE Leap 15.4 | openssl-3 | 3.0.1-150400.4.17.1 | SUSE-SU-2023:0312-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | openssl | 3.0.8-r0 | — |
| Alpine v3.23 | openssl | 3.0.8-r0 | — |
| Alpine v3.22 | openssl | 3.0.8-r0 | — |
| Alpine v3.21 | openssl | 3.0.8-r0 | — |
| Alpine v3.20 | openssl | 3.0.8-r0 | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | openssl | 3.0.8-r0 | — |
| Alpine v3.18 | openssl | 3.0.8-r0 | — |
| Alpine v3.17 | openssl | 3.0.8-r0 | — |
| Alpine v3.16 | openssl3 | 3.0.8-r0 | — |
| Alpine v3.15 | openssl3 | 3.0.8-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | openssl +3 | 1:3.0.5-1.amzn2023.0.6 | ALAS2023-2023-101 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | openssl +3 | 1:3.0.1-47.0.1.el9_1 | ELSA-2023-0946 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | openssl | 3.1.0-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| crates.io | openssl-src | >= 300.0.0, < 300.0.12 | 300.0.12 | GHSA-w67w-mw4j-8qrv |
Advisories 18
- ALSA-2023:0946 Moderate: openssl security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:1199 Red Hat Security Advisory: openssl security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2023:0946 Red Hat Security Advisory: openssl security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- WID-SEC-2023-0304 OpenSSL: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 5, 2026
- USN-5844-1 openssl vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- RLSA-2023:0946 Important: openssl security and bug fix update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2023:0312-1 Security update for openssl-3 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12716-1 libopenssl-3-devel-3.0.8-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-1424 Xerox FreeFlow Print Server für Solaris: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 6, 2025
- ICSA-25-065-01 Hitachi Energy PCU400 CISA ICS & IT advisories · Feb 25, 2025
- WID-SEC-2024-1591 Juniper JUNOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2024
- SSA-943925 SSA-943925: Multiple Vulnerabilities in SINEC NMS before V2.0 SP1 Siemens ProductCERT · Mar 12, 2024
- ICSA-24-046-15 Siemens SINEC NMS CISA ICS & IT advisories · Mar 12, 2024
- ICSA-23-320-08 Siemens SCALANCE Family Products CISA ICS & IT advisories · Mar 12, 2024
- SSA-699386 SSA-699386: Multiple Vulnerabilities in SCALANCE XB-200 / XC-200 / XP-200 / XF-200BA / XR-300WG Family before V4.5 Siemens ProductCERT · Mar 12, 2024
- ICSA-23-229-01 ICONICS and Mitsubishi Electric Products CISA ICS & IT advisories · Aug 17, 2023
- ELSA-2023-0946 Moderate: openssl security and bug fix update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Feb 28, 2023
- ALAS2023-2023-101 Important: openssl security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 22, 2023
References
- OpenSSL Advisory vendor-advisory
- 3.0.8 git commit patch
- https://security.gentoo.org/glsa/202402-08