Description
The ssl3_get_key_exchange function in s3_clnt.c in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k allows remote SSL servers to conduct ECDHE-to-ECDH downgrade attacks and trigger a loss of forward secrecy by omitting the ServerKeyExchange 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 | 1.0.1k-1 | — |
| Debian 13 | openssl | 1.0.1k-1 | — |
| Debian 12 | openssl | 1.0.1k-1 | — |
| Debian 7 | openssl | 1.0.1e-2+deb7u14 | DSA-3125-1 |
| Debian 6.0 | openssl | 0.9.8o-4squeeze19 | DLA-132-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | openssl | 1.0.1f-1ubuntu2.8 | USN-2459-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | openssl +4 | 1:1.0.1e-34.el7_0.7 | RHSA-2015:0066 |
| RHEL 6 | openssl +3 | 1.0.1e-30.el6_6.5 | RHSA-2015:0066 |
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-70.2 | SUSE-SU-2015:0305-1 |
| 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 |
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 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libressl | 2.5.0-1.1 | openSUSE-SU-2024:10309-1 |
| 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-34.el7_0.7 | ELSA-2015-0066 |
Advisories 11
- RHSA-2015:0066 Red Hat Security Advisory: openssl security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- USN-2459-1 openssl vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3125-1 openssl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-132-1 openssl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10309-1 libcrypto38-2.5.0-1.1 on GA media 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-403 Security update for OpenSSL SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:0305-1 Security update for compat-openssl098 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
- ELSA-2015-0066 Moderate: openssl security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 20, 2015
References
- HPSBOV03318 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
- openSUSE-SU-2015:0130 vendor-advisory
- 20150310 Multiple Vulnerabilities in OpenSSL (January 2015) Affecting Cisco Products vendor-advisory
- HPSBGN03299 vendor-advisory
- HPSBMU03409 vendor-advisory
- https://support.apple.com/HT204659
- 71942 vdb-entry
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
- HPSBMU03380 vendor-advisory
- https://github.com/openssl/openssl/commit/b15f8769644b00ef7283521593360b7b2135cb63
- 1033378 vdb-entry
- HPSBHF03289 vendor-advisory
- openSUSE-SU-2016:0640 vendor-advisory
- https://www.openssl.org/news/secadv_20150108.txt
- MDVSA-2015:019 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/cpuapr2015-2365600.html
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10679
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- openSUSE-SU-2015:1277 vendor-advisory
- RHSA-2015:0066 vendor-advisory
- HPSBUX03244 vendor-advisory
- APPLE-SA-2015-04-08-2 vendor-advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10108
- SUSE-SU-2015:0578 vendor-advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10102
- SUSE-SU-2015:0946 vendor-advisory
- HPSBMU03397 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
- HPSBMU03396 vendor-advisory
- HPSBUX03162 vendor-advisory
- MDVSA-2015:062 vendor-advisory
- https://support.citrix.com/article/CTX216642
- HPSBMU03413 vendor-advisory
- https://bto.bluecoat.com/security-advisory/sa88
- DSA-3125 vendor-advisory