Description
The SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (s2_lib.c assertion failure and daemon exit) via a crafted CLIENT-MASTER-KEY message.
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 | 1.0.0c-2 | — |
| Debian 13 | openssl | 1.0.0c-2 | — |
| Debian 12 | openssl | 1.0.0c-2 | — |
| Debian 6.0 | openssl | 0.9.8o-4squeeze20 | DLA-177-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | openssl | 1.0.1f-1ubuntu2.11 | USN-2537-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | openssl +4 | 1:1.0.1e-42.ael7b_1.4 | RHSA-2015:0716 |
| RHEL 7 | openssl098e | 0.9.8e-29.el7_2.3 | RHSA-2016:0372 |
| RHEL 6 | openssl +3 | 1.0.1e-30.el6_6.7 | RHSA-2015:0715 |
| RHEL 6 | openssl098e | 0.9.8e-20.el6_7.1 | RHSA-2016:0372 |
| RHEL 5 | openssl +2 | 0.9.8e-33.el5_11 | RHSA-2015:0800 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Mission Critical 6 | openssl +3 | 1.0.0-20.el6_2.8 | RHSA-2016:0303 |
| Red Hat Rhel Mission Critical 5 | openssl +2 | 0.9.8e-12.el5_6.13 | RHSA-2016:0304 |
| RHEL 6.5 AUS | openssl +3 | 1.0.1e-16.el6_5.16 | RHSA-2016:0303 |
| RHEL 6.4 AUS | openssl +3 | 1.0.0-27.el6_4.5 | RHSA-2016:0303 |
| RHEL 5.9 AUS | openssl +2 | 0.9.8e-26.el5_9.5 | RHSA-2016:0304 |
| RHEL 4 ELS | openssl +2 | 0.9.7a-43.23.el4 | RHSA-2016:0306 |
| Red Hat Gluster Storage 2 | openssl +3 | 1.0.1e-30.el6_6.7 | RHSA-2015:0752 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 SP1 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 | compat-openssl098 | 0.9.8j-73.2 | SUSE-SU-2015:0553-2, SUSE-SU-2015:0553-1 |
| SLES 12 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 | openssl | 1.0.1i-20.1 | SUSE-SU-2015:0541-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 SP1 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 | openssl | 1.0.1i-20.1 | SUSE-SU-2015:0541-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openssl-1_1 | 1.1.1l-1.2 | openSUSE-SU-2024:11127-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | openssl +4 | 1:1.0.1e-42.el7_1.4 | ELSA-2015-0716 |
| Oracle Linux 7 | openssl098e | 0.9.8e-29.el7_2.3 | ELSA-2016-0372 |
Advisories 21
- RHSA-2015:0752 Red Hat Security Advisory: openssl security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2015:0715 Red Hat Security Advisory: openssl security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2015:0716 Red Hat Security Advisory: openssl security and bug fix update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2016:0372 Red Hat Security Advisory: openssl098e security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0306 Red Hat Security Advisory: openssl security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0304 Red Hat Security Advisory: openssl security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0303 Red Hat Security Advisory: openssl security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2015:0800 Red Hat Security Advisory: openssl security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- USN-2537-1 openssl vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-177-1 openssl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2015:0553-2 Security update for compat-openssl098 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-403 Forbidden-1 Security update for OpenSSL SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:0553-1 Security update for compat-openssl098 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:0541-1 Security update for openssl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-403 Security update for OpenSSL SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2026-0180 Dell Data Protection Advisor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 20, 2026
- openSUSE-SU-2024:11127-1 libopenssl-1_1-devel-1.1.1l-1.2 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ICSA-22-349-21 Siemens SCALANCE X-200RNA Switch Devices CISA ICS & IT advisories · Dec 13, 2022
- SSA-412672 SSA-412672: Multiple OpenSSL and OpenSSH Vulnerabilities in SCALANCE X-200RNA Switch Devices before V3.2.7 Siemens ProductCERT · Dec 13, 2022
- ELSA-2016-0372 Important: openssl098e security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 9, 2016
- ELSA-2015-0716 Moderate: openssl security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 23, 2015
References
- https://kc.mcafee.com/corporate/index?page=content&id=SB10110
- http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
- RHSA-2015:0715 vendor-advisory
- openSUSE-SU-2015:0554 vendor-advisory
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10680
- USN-2537-1 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- HPSBMU03409 vendor-advisory
- FEDORA-2015-4303 vendor-advisory
- https://bto.bluecoat.com/security-advisory/sa92
- https://www.openssl.org/news/secadv_20150319.txt
- https://bugzilla.redhat.com/show_bug.cgi?id=1202404
- openSUSE-SU-2016:0638 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
- HPSBMU03380 vendor-advisory
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=86f8fb0e344d62454f8daf3e15236b2b59210756
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- SUSE-SU-2016:0621 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
- FEDORA-2015-4300 vendor-advisory
- APPLE-SA-2015-06-30-2 vendor-advisory
- FEDORA-2015-6951 vendor-advisory
- openSUSE-SU-2016:0640 vendor-advisory
- https://access.redhat.com/articles/1384453
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- SUSE-SU-2016:1057 vendor-advisory
- HPSBUX03334 vendor-advisory
- MDVSA-2015:063 vendor-advisory
- SUSE-SU-2015:0541 vendor-advisory
- openSUSE-SU-2016:0720 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- SUSE-SU-2016:0624 vendor-advisory
- RHSA-2015:0716 vendor-advisory
- http://support.apple.com/kb/HT204942
- SUSE-SU-2015:0578 vendor-advisory
- FreeBSD-SA-15:06 vendor-advisory
- SUSE-SU-2016:0631 vendor-advisory
- HPSBMU03397 vendor-advisory
- SUSE-SU-2016:0617 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
- RHSA-2015:0752 vendor-advisory
- RHSA-2015:0800 vendor-advisory
- 73232 vdb-entry
- 1031929 vdb-entry
- MDVSA-2015:062 vendor-advisory
- openSUSE-SU-2016:0628 vendor-advisory
- FEDORA-2015-4320 vendor-advisory
- https://support.citrix.com/article/CTX216642
- FEDORA-2015-6855 vendor-advisory
- SUSE-SU-2016:0620 vendor-advisory
- openSUSE-SU-2016:0637 vendor-advisory
- SUSE-SU-2016:0641 vendor-advisory
- GLSA-201503-11 vendor-advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf