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OpenAdvisories

Description

A timing based side channel exists in the OpenSSL RSA Decryption implementation
which could be sufficient to recover a plaintext across a network in a
Bleichenbacher style attack. To achieve a successful decryption an attacker
would have to be able to send a very large number of trial messages for
decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5,
RSA-OEAP and RSASVE.

For example, in a TLS connection, RSA is commonly used by a client to send an
encrypted pre-master secret to the server. An attacker that had observed a
genuine connection between a client and a server could use this flaw to send
trial messages to the server and record the time taken to process them. After a
sufficiently large number of messages the attacker could recover the pre-master
secret used for the original connection and thus be able to decrypt the
application data sent over that connection.

Affected products

VendorProductAffectedFixed
OpenSSL OpenSSL 3.0.0 – < 3.0.8, 1.1.1 – < 1.1.1t, 1.0.2 – < 1.0.2zg 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.

ReleasePackageFixed inAdvisory
Debian 14 openssl 3.0.8-1 —
Debian 13 openssl 3.0.8-1 —
Debian 12 openssl 3.0.8-1 —
Debian 11 openssl 1.1.1n-0+deb11u4 DSA-5343-1
Debian 10 openssl 1.1.1n-0+deb10u4 DLA-3325-1
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 nodejs 12.22.9~dfsg-1ubuntu3.3 USN-6564-1
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
Show 10 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.17 —
Ubuntu Pro FIPS-updates 18.04 LTS openssl 1.1.1-1ubuntu2.fips.2.1~18.04.21 —
Ubuntu Pro FIPS-updates 16.04 LTS openssl No fix yet —
Ubuntu Pro 20.04 LTS edk2 No fix yet —
Ubuntu Pro 18.04 LTS edk2 +1 No fix yet —
Ubuntu Pro 16.04 LTS edk2 +1 No fix yet —
Ubuntu Pro 14.04 LTS openssl No fix yet —
ReleasePackageFixed inAdvisory
RHEL 9 edk2 +4 20221207gitfff6d81270b5-9.el9_2 RHSA-2023:2165
RHEL 9 openssl +3 1:3.0.1-47.el9_1 RHSA-2023:0946
RHEL 8 edk2 +2 20220126gitbb1bba3d77-4.el8 RHSA-2023:2932
RHEL 8 openssl +3 1:1.1.1k-9.el8_7 RHSA-2023:1405
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 9.0 EUS openssl +3 1:3.0.1-46.el9_0 RHSA-2023:1199
RHEL 8.6 EUS edk2 +2 20220126gitbb1bba3d77-2.el8_6.1 RHSA-2023:4128
RHEL 8.6 EUS openssl +3 1:1.1.1k-9.el8_6 RHSA-2023:3408
Red Hat JBoss Web Server 5 jws5-tomcat-native 1.2.31-14.redhat_14.el7jws RHSA-2023:3420
Red Hat JBoss Core Services 1 jbcs-httpd24-apr-util +8 1.6.1-101.el7jbcs RHSA-2023:3354
Red Hat JBoss Core Services 1 jbcs-httpd24-curl +2 8.0.1-1.el7jbcs RHSA-2023:3354
Red Hat JBoss Core Services 1 jbcs-httpd24-httpd +6 2.4.51-39.el7jbcs RHSA-2023:3354
Red Hat JBoss Core Services 1 jbcs-httpd24-mod_ssl +1 1:2.4.51-39.el7jbcs RHSA-2023:3354
Red Hat JBoss Core Services 1 jbcs-httpd24-openssl +4 1:1.1.1k-14.el7jbcs RHSA-2023:3354

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 9 edk2-ovmf +3 20221207gitfff6d81270b5-9.el9_2 ALSA-2023:2165
AlmaLinux 9 openssl +3 1:3.0.1-47.el9_1 ALSA-2023:0946
AlmaLinux 8 edk2-ovmf +1 20220126gitbb1bba3d77-4.el8 ALSA-2023:2932
AlmaLinux 8 openssl +3 1:1.1.1k-9.el8_7 ALSA-2023:1405

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 9 openssl 1:3.0.1-47.el9_1 RLSA-2023:0946
Rocky Linux 8 openssl 1:1.1.1k-9.el8_7 RLSA-2023:1405
ReleasePackageFixed inAdvisory
SLES 15 SP5 openssl-1_0_0 1.0.2p-150000.3.79.1 SUSE-SU-2023:2633-1
SLES 15 SP5 openssl-1_1 1.1.1l-150500.17.6.1 SUSE-SU-2023:29171-1
SLES 15 SP4 openssl-1_0_0 1.0.2p-150000.3.65.1 SUSE-SU-2023:2633-1, SUSE-SU-2023:0305-2, SUSE-SU-2023:0305-1
SLES 15 SP4 openssl-1_1 1.1.1l-150400.7.22.1 SUSE-SU-2023:2648-1, SUSE-SU-2023:0311-1
SLES 15 SP4 openssl-3 3.0.1-150400.4.17.1 SUSE-SU-2023:0312-1
SLES 15 SP3 openssl-1_0_0 1.0.2p-150000.3.65.1 SUSE-SU-2023:2633-1, SUSE-SU-2023:0305-2, SUSE-SU-2023:0305-1
SLES 15 SP3 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
SLES 15 SP2 openssl-1_0_0 1.0.2p-150000.3.65.1 SUSE-SU-2023:2633-1, SUSE-SU-2023:0305-2, SUSE-SU-2023:0305-1
SLES 15 SP2 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
SLES 15 SP1 openssl-1_0_0 1.0.2p-150000.3.65.1 SUSE-SU-2023:2633-1, SUSE-SU-2023:0305-2, SUSE-SU-2023:0305-1
SLES 15 SP1 openssl-1_1 1.1.0i-150100.14.42.1 SUSE-SU-2023:2622-1, SUSE-SU-2023:0308-1
Show 25 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES 12 SP5 openssl-1_0_0 1.0.2p-3.64.1 SUSE-SU-2023:2624-1, SUSE-SU-2023:0306-1
SLES 12 SP5 openssl-1_1 1.1.1d-2.75.1 SUSE-SU-2023:2623-1, SUSE-SU-2023:0309-1
SLES 12 SP4 openssl-1_0_0 1.0.2p-3.64.1 SUSE-SU-2023:2624-1, SUSE-SU-2023:0306-1
SLES 12 SP4 openssl-1_1 1.1.1d-2.75.1 SUSE-SU-2023:2623-1, SUSE-SU-2023:0309-1
SLES 12 SP2 openssl 1.0.2j-60.86.1 SUSE-SU-2023:2634-1, SUSE-SU-2023:0684-1
SLES 12 compat-openssl098 0.9.8j-106.42.1 SUSE-SU-2023:3096-1, SUSE-SU-2023:0581-1
SLES 11 SP4 openssl 0.9.8j-0.106.60.1 SUSE-SU-2023:0584-1
SLES 11 SP4 openssl1 1.0.1g-0.58.56.1 SUSE-SU-2023:0307-1
SLES for SAP 15 SP3 openssl-1_0_0 1.0.2p-150000.3.65.1 SUSE-SU-2023:2633-1, SUSE-SU-2023:0305-2, SUSE-SU-2023:0305-1
SLES for SAP 15 SP3 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
SLES for SAP 15 SP2 openssl-1_0_0 1.0.2p-150000.3.65.1 SUSE-SU-2023:2633-1, SUSE-SU-2023:0305-2, SUSE-SU-2023:0305-1
SLES for SAP 15 SP2 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
SLES for SAP 15 SP1 openssl-1_0_0 1.0.2p-150000.3.65.1 SUSE-SU-2023:2633-1, SUSE-SU-2023:0305-2, SUSE-SU-2023:0305-1
SLES for SAP 15 SP1 openssl-1_1 1.1.0i-150100.14.42.1 SUSE-SU-2023:2622-1, SUSE-SU-2023:0308-1
SLES for SAP 12 SP5 compat-openssl098 0.9.8j-106.42.1 SUSE-SU-2023:3096-1, SUSE-SU-2023:0581-1
SLES for SAP 12 SP5 openssl-1_0_0 1.0.2p-3.64.1 SUSE-SU-2023:2624-1, SUSE-SU-2023:0306-1
SLES for SAP 12 SP5 openssl-1_1 1.1.1d-2.75.1 SUSE-SU-2023:2623-1, SUSE-SU-2023:0309-1
SLES for SAP 12 SP4 compat-openssl098 0.9.8j-106.42.1 SUSE-SU-2023:3096-1, SUSE-SU-2023:0581-1
SLES for SAP 12 SP4 openssl-1_0_0 1.0.2p-3.64.1 SUSE-SU-2023:2624-1, SUSE-SU-2023:0306-1
SLES for SAP 12 SP4 openssl-1_1 1.1.1d-2.75.1 SUSE-SU-2023:2623-1, SUSE-SU-2023:0309-1
SLE Real Time 15 SP3 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
SLE Micro 5.4 openssl-1_1 1.1.1l-150400.7.42.1 SUSE-SU-2023:2648-1
SLE Micro 5.3 openssl-1_1 1.1.1l-150400.7.22.1 SUSE-SU-2023:2648-1, SUSE-SU-2023:0311-1
SLE Micro 5.2 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
SLE Micro 5.1 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
SLE HPC 15 SP3 openssl-1_0_0 1.0.2p-150000.3.65.1 SUSE-SU-2023:2633-1, SUSE-SU-2023:0305-2, SUSE-SU-2023:0305-1
SLE HPC 15 SP3 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
SLE HPC 15 SP2 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
SLE HPC 15 SP1 openssl-1_1 1.1.0i-150100.14.42.1 SUSE-SU-2023:2622-1, SUSE-SU-2023:0308-1
SUSE OpenStack Cloud Crowbar 9 openssl-1_0_0 1.0.2p-3.64.1 SUSE-SU-2023:2624-1, SUSE-SU-2023:0306-1
SUSE OpenStack Cloud Crowbar 9 openssl-1_1 1.1.1d-2.75.1 SUSE-SU-2023:2623-1, SUSE-SU-2023:0309-1
SUSE OpenStack Cloud 9 openssl-1_0_0 1.0.2p-3.64.1 SUSE-SU-2023:2624-1, SUSE-SU-2023:0306-1
SUSE OpenStack Cloud 9 openssl-1_1 1.1.1d-2.75.1 SUSE-SU-2023:2623-1, SUSE-SU-2023:0309-1
SUSE Manager Server 4.2 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
SUSE Manager Retail Branch Server 4.2 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:0310-1
SUSE Manager Proxy 4.2 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
SUSE Enterprise Storage 7.1 openssl-1_0_0 1.0.2p-150000.3.65.1 SUSE-SU-2023:2633-1, SUSE-SU-2023:0305-2, SUSE-SU-2023:0305-1
SUSE Enterprise Storage 7.1 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
SUSE Enterprise Storage 7 openssl-1_0_0 1.0.2p-150000.3.65.1 SUSE-SU-2023:2633-1, SUSE-SU-2023:0305-2, SUSE-SU-2023:0305-1
SUSE Enterprise Storage 7 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:3179-1, SUSE-SU-2023:0310-1
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed openssl-1_0_0 1.0.2u-12.1 openSUSE-SU-2024:12687-1
openSUSE Tumbleweed openssl-1_1 1.1.1t-1.1 openSUSE-SU-2024:12688-1
openSUSE Tumbleweed openssl-3 3.0.8-1.1 openSUSE-SU-2024:12716-1
openSUSE Leap 15.5 openssl-1_0_0 1.0.2p-150000.3.79.1 SUSE-SU-2023:2633-1
openSUSE Leap 15.5 openssl-1_1 1.1.1l-150500.17.6.1 SUSE-SU-2023:29171-1
openSUSE Leap 15.4 openssl-1_0_0 1.0.2p-150000.3.65.1 SUSE-SU-2023:2633-1, SUSE-SU-2023:0305-2, SUSE-SU-2023:0305-1
openSUSE Leap 15.4 openssl-1_1 1.1.1l-150400.7.22.1 SUSE-SU-2023:2648-1, SUSE-SU-2023:0311-1
openSUSE Leap 15.4 openssl-3 3.0.1-150400.4.17.1 SUSE-SU-2023:0312-1
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.3 openssl-1_1 1.1.1l-150400.7.22.1 SUSE-SU-2023:2648-1, SUSE-SU-2023:0311-1
openSUSE Leap Micro 5.2 openssl-1_1 1.1.1d-150200.11.57.1 SUSE-SU-2023:0310-1
ReleasePackageFixed inAdvisory
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 6 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Alpine v3.19 openssl 3.0.8-r0 —
Alpine v3.18 openssl 3.0.8-r0 —
Alpine v3.18 openssl1.1-compat 1.1.1t-r0 —
Alpine v3.17 openssl 3.0.8-r0 —
Alpine v3.17 openssl1.1-compat 1.1.1t-r0 —
Alpine v3.16 openssl 1.1.1t-r0 —
Alpine v3.16 openssl3 3.0.8-r0 —
Alpine v3.15 openssl 1.1.1t-r0 —
Alpine v3.15 openssl3 3.0.8-r0 —
Alpine v3.14 openssl 1.1.1t-r0 —

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 openssl +3 1:3.0.5-1.amzn2023.0.6 ALAS2023-2023-101
Amazon Linux 2 edk2-ovmf +4 20200801stable-1.amzn2.0.5 ALAS2-2024-2502
Amazon Linux 2 openssl +4 1:1.0.2k-24.amzn2.0.6 ALAS2-2023-1935
Amazon Linux 2 openssl11 +3 1:1.1.1g-12.amzn2.0.11 ALAS2-2023-1934

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 edk2 20240223gitedc6681206c1-1 —
Azure Linux 3 hvloader 1.0.1-4 —
Azure Linux 2 (CBL-Mariner) cloud-hypervisor 30.0-2 —
Azure Linux 2 (CBL-Mariner) edk2 20230301gitf80f052277c8-42 —
Azure Linux 2 (CBL-Mariner) hvloader 1.0.1-2 —
Azure Linux 2 (CBL-Mariner) openssl 1.1.1k-21 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 edk2-ovmf +3 20221207gitfff6d81270b5-9.el9_2 ELSA-2023-32790, ELSA-2023-13024, ELSA-2023-2165
Oracle Linux 9 openssl +3 1:3.0.1-47.0.1.el9_1 ELSA-2023-0946
Oracle Linux 8 edk2-ovmf +1 20220126gitbb1bba3d77-4.el8 ELSA-2023-13025, ELSA-2023-2932
Oracle Linux 8 edk2-tools 1:20230821-1.el8 ELSA-2023-32791
Oracle Linux 8 openssl +3 1:1.1.1k-9.el8_7 ELSA-2023-1405
Oracle Linux 7 OVMF +1 1:1.6.6-1.el7 ELSA-2023-13027, ELSA-2023-13026

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling openssl 3.1.0-r0 —

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.

Affected packages

EcosystemPackageAffectedFixedRecord
crates.io openssl-src < 111.25.0 111.25.0 GHSA-p52g-cm5j-mjv4
crates.io openssl-src >= 300.0.0, < 300.0.12 300.0.12 GHSA-p52g-cm5j-mjv4
crates.io openssl-src >= 0.0.0-0, < 111.25.0 · >= 300.0.0, < 300.0.12 111.25.0, 300.0.12 RUSTSEC-2023-0007

Advisories 50

References