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OpenAdvisories

Description

A security vulnerability has been identified in all supported versions

of OpenSSL related to the verification of X.509 certificate chains
that include policy constraints. Attackers may be able to exploit this
vulnerability by creating a malicious certificate chain that triggers
exponential use of computational resources, leading to a denial-of-service
(DoS) attack on affected systems.

Policy processing is disabled by default but can be enabled by passing
the `-policy' argument to the command line utilities or by calling the
`X509_VERIFY_PARAM_set1_policies()' function.

Affected products

VendorProductAffectedFixed
OpenSSL OpenSSL 3.1.0 – < 3.1.1, 3.0.0 – < 3.0.9, 1.1.1 – < 1.1.1u, 1.0.2 – < 1.0.2zh 3.1.1

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.

ReleasePackageFixed inAdvisory
Debian 14 openssl 3.0.9-1 —
Debian 13 openssl 3.0.9-1 —
Debian 12 openssl 3.0.9-1 —
Debian 11 openssl 1.1.1n-0+deb11u5 DSA-5417-1
Debian 10 openssl 1.1.1n-0+deb10u5 DLA-3449-1
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS edk2 2024.02-2ubuntu0.6 USN-7894-1
Ubuntu 22.04 LTS edk2 2022.02-3ubuntu0.22.04.4 USN-7894-1
Ubuntu 22.04 LTS openssl 3.0.2-0ubuntu1.9 USN-6039-1
Ubuntu 20.04 LTS openssl 1.1.1f-1ubuntu2.18 USN-6039-1
Ubuntu 18.04 LTS openssl 1.1.1-1ubuntu2.1~18.04.22 USN-6039-1
Ubuntu 18.04 LTS openssl1.0 1.0.2n-1ubuntu5.12 USN-6039-1
Show 11 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro FIPS 20.04 LTS openssl No fix yet —
Ubuntu Pro FIPS 18.04 LTS openssl No fix yet —
Ubuntu Pro FIPS 16.04 LTS openssl No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS openssl 1.1.1f-1ubuntu2.fips.18 —
Ubuntu Pro FIPS-updates 18.04 LTS openssl 1.1.1-1ubuntu2.fips.2.1~18.04.22 —
Ubuntu Pro FIPS-updates 16.04 LTS openssl 1.0.2g-1ubuntu4.fips.4.20.7 —
Ubuntu Pro 22.04 LTS nodejs No fix yet —
Ubuntu Pro 20.04 LTS edk2 No fix yet —
Ubuntu Pro 18.04 LTS edk2 No fix yet —
Ubuntu Pro 16.04 LTS edk2 No fix yet —
Ubuntu Pro 16.04 LTS openssl 1.0.2g-1ubuntu4.20+esm7 USN-6039-1
Ubuntu Pro 14.04 LTS openssl 1.0.1f-1ubuntu2.27+esm7 USN-6039-1
ReleasePackageFixed inAdvisory
RHEL 9 openssl +3 1:3.0.7-16.el9_2 RHSA-2023:3722
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Red Hat JBoss Web Server 5 jws5-tomcat +11 9.0.62-19.redhat_00017.1.el7jws RHSA-2023:7622
Red Hat JBoss Web Server 5 jws5-tomcat-native 1.2.31-16.redhat_16.el7jws RHSA-2023:7622
Red Hat JBoss Core Services 1 jbcs-httpd24-curl +2 8.4.0-2.el7jbcs RHSA-2023:7625
Red Hat JBoss Core Services 1 jbcs-httpd24-mod_http2 1.15.19-32.el7jbcs RHSA-2023:7625
Red Hat JBoss Core Services 1 jbcs-httpd24-mod_jk +1 1.2.49-1.redhat_1.el7jbcs RHSA-2023:7625
Red Hat JBoss Core Services 1 jbcs-httpd24-openssl +4 1:1.1.1k-16.el7jbcs RHSA-2023:7625

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 9 openssl +3 1:3.0.7-16.el9_2 ALSA-2023:3722
ReleasePackageFixed inAdvisory
SLES 15 SP4 openssl-1_0_0 1.0.2p-150000.3.70.1 SUSE-SU-2023:1703-1
SLES 15 SP4 openssl-1_1 1.1.1l-150400.7.31.2 SUSE-SU-2023:1745-1
SLES 15 SP4 openssl-3 3.0.1-150400.4.20.1 SUSE-SU-2023:1746-1
SLES 15 SP3 openssl-1_0_0 1.0.2p-150000.3.70.1 SUSE-SU-2023:1703-1
SLES 15 SP3 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
SLES 15 SP2 openssl-1_0_0 1.0.2p-150000.3.70.1 SUSE-SU-2023:1703-1
SLES 15 SP2 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
SLES 15 SP1 openssl-1_0_0 1.0.2p-150000.3.70.1 SUSE-SU-2023:1703-1
SLES 15 SP1 openssl-1_1 1.1.0i-150100.14.45.1 SUSE-SU-2023:1748-1
SLES 12 SP5 openssl-1_0_0 1.0.2p-3.69.1 SUSE-SU-2023:1704-1
SLES 12 SP5 openssl-1_1 1.1.1d-2.78.1 SUSE-SU-2023:1747-1
Show 23 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES 12 SP4 openssl-1_0_0 1.0.2p-3.69.1 SUSE-SU-2023:1704-1
SLES 12 SP4 openssl-1_1 1.1.1d-2.78.1 SUSE-SU-2023:1747-1
SLES 12 SP2 openssl 1.0.2j-60.89.1 SUSE-SU-2023:1738-1
SLES 12 compat-openssl098 0.9.8j-106.45.1 SUSE-SU-2023:1737-1
SLES 11 SP4 openssl 0.9.8j-0.106.63.1 SUSE-SU-2023:1764-1
SLES 11 SP4 openssl1 1.0.1g-0.58.59.1 SUSE-SU-2023:1754-1
SLES for SAP 15 SP3 openssl-1_0_0 1.0.2p-150000.3.70.1 SUSE-SU-2023:1703-1
SLES for SAP 15 SP3 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
SLES for SAP 15 SP2 openssl-1_0_0 1.0.2p-150000.3.70.1 SUSE-SU-2023:1703-1
SLES for SAP 15 SP2 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
SLES for SAP 15 SP1 openssl-1_0_0 1.0.2p-150000.3.70.1 SUSE-SU-2023:1703-1
SLES for SAP 15 SP1 openssl-1_1 1.1.0i-150100.14.45.1 SUSE-SU-2023:1748-1
SLES for SAP 12 SP5 compat-openssl098 0.9.8j-106.45.1 SUSE-SU-2023:1737-1
SLES for SAP 12 SP5 openssl-1_0_0 1.0.2p-3.69.1 SUSE-SU-2023:1704-1
SLES for SAP 12 SP5 openssl-1_1 1.1.1d-2.78.1 SUSE-SU-2023:1747-1
SLES for SAP 12 SP4 compat-openssl098 0.9.8j-106.45.1 SUSE-SU-2023:1737-1
SLES for SAP 12 SP4 openssl-1_0_0 1.0.2p-3.69.1 SUSE-SU-2023:1704-1
SLES for SAP 12 SP4 openssl-1_1 1.1.1d-2.78.1 SUSE-SU-2023:1747-1
SLE Real Time 15 SP3 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
SLE Micro 5.4 openssl-1_1 1.1.1l-150400.7.31.2 SUSE-SU-2023:1745-1
SLE Micro 5.3 openssl-1_1 1.1.1l-150400.7.31.2 SUSE-SU-2023:1745-1
SLE Micro 5.2 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
SLE Micro 5.1 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
SLE HPC 15 SP3 openssl-1_0_0 1.0.2p-150000.3.70.1 SUSE-SU-2023:1703-1
SLE HPC 15 SP3 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
SLE HPC 15 SP2 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
SLE HPC 15 SP1 openssl-1_1 1.1.0i-150100.14.45.1 SUSE-SU-2023:1748-1
SUSE OpenStack Cloud Crowbar 9 openssl-1_0_0 1.0.2p-3.69.1 SUSE-SU-2023:1704-1
SUSE OpenStack Cloud Crowbar 9 openssl-1_1 1.1.1d-2.78.1 SUSE-SU-2023:1747-1
SUSE OpenStack Cloud 9 openssl-1_0_0 1.0.2p-3.69.1 SUSE-SU-2023:1704-1
SUSE OpenStack Cloud 9 openssl-1_1 1.1.1d-2.78.1 SUSE-SU-2023:1747-1
SUSE Manager Server 4.2 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
SUSE Manager Proxy 4.2 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
SUSE Enterprise Storage 7.1 openssl-1_0_0 1.0.2p-150000.3.70.1 SUSE-SU-2023:1703-1
SUSE Enterprise Storage 7.1 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
SUSE Enterprise Storage 7 openssl-1_0_0 1.0.2p-150000.3.70.1 SUSE-SU-2023:1703-1
SUSE Enterprise Storage 7 openssl-1_1 1.1.1d-150200.11.62.1 SUSE-SU-2023:1790-1
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed openssl-1_0_0 1.0.2u-14.1 openSUSE-SU-2024:12824-1
openSUSE Tumbleweed openssl-1_1 1.1.1t-2.1 openSUSE-SU-2024:12825-1
openSUSE Tumbleweed openssl-3 3.1.1-1.1 openSUSE-SU-2024:12969-1
openSUSE Tumbleweed python-pymssql 2.3.12-1.1 openSUSE-SU-2026:10199-1
openSUSE Leap 15.4 openssl-1_0_0 1.0.2p-150000.3.70.1 SUSE-SU-2023:1703-1
openSUSE Leap 15.4 openssl-1_1 1.1.1l-150400.7.31.2 SUSE-SU-2023:1745-1
openSUSE Leap 15.4 openssl-3 3.0.1-150400.4.20.1 SUSE-SU-2023:1746-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.3 openssl-1_1 1.1.1l-150400.7.31.2 SUSE-SU-2023:1745-1
ReleasePackageFixed inAdvisory
Alpine v3.24 openssl 3.1.0-r1 —
Alpine v3.23 openssl 3.1.0-r1 —
Alpine v3.22 openssl 3.1.0-r1 —
Alpine v3.21 openssl 3.1.0-r1 —
Alpine v3.20 openssl 3.1.0-r1 —
Show 6 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Alpine v3.19 openssl 3.1.0-r1 —
Alpine v3.18 openssl 3.1.0-r1 —
Alpine v3.18 openssl1.1-compat 1.1.1t-r1 —
Alpine v3.17 openssl 3.0.8-r1 —
Alpine v3.17 openssl1.1-compat 1.1.1t-r1 —
Alpine v3.16 openssl 1.1.1t-r1 —
Alpine v3.16 openssl3 3.0.8-r1 —
Alpine v3.15 openssl 1.1.1t-r2 —
Alpine v3.15 openssl3 3.0.8-r1 —
Alpine v3.14 openssl 1.1.1t-r1 —

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 openssl +3 1:3.0.8-1.amzn2023.0.2 ALAS2023-2023-181
Amazon Linux 2 edk2-ovmf +4 20200801stable-1.amzn2.0.5 ALAS2-2024-2502
Amazon Linux 2 openssl +4 1:1.0.2k-24.amzn2.0.7 ALAS2-2023-2073
Amazon Linux 2 openssl11 +3 1:1.1.1g-12.amzn2.0.14 ALAS2-2023-2039

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 edk2 20230301gitf80f052277c8-37 —
Azure Linux 2 (CBL-Mariner) edk2 20230301gitf80f052277c8-34 —
Azure Linux 2 (CBL-Mariner) hvloader 1.0.1-3 —
Azure Linux 2 (CBL-Mariner) kata-containers-cc 0.4.1-2 —
Azure Linux 2 (CBL-Mariner) rust 1.68.0-1 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 openssl +3 1:3.0.7-16.0.1.el9_2 ELSA-2023-3722

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling openssl 3.1.0-r1 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 50

References