Description
The ssl3_get_cert_verify function in s3_srvr.c in OpenSSL 1.0.0 before 1.0.0p and 1.0.1 before 1.0.1k accepts client authentication with a Diffie-Hellman (DH) certificate without requiring a CertificateVerify message, which allows remote attackers to obtain access without knowledge of a private key via crafted TLS Handshake Protocol traffic to a server that recognizes a Certification Authority with DH support.
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 |
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 |
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
-
saurabh2088/OpenSSL_1_0_1g_CVE-2015-0205 ★ 0 · Apr 9, 2024
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 9
- 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
- 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
- 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
- openssl-cve20150205-sec-bypass(99708) vdb-entry
- 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
- https://github.com/openssl/openssl/commit/1421e0c584ae9120ca1b88098f13d6d2e90b83a3
- HPSBMU03409 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- 71941 vdb-entry
- http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
- HPSBMU03380 vendor-advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888
- FEDORA-2015-0601 vendor-advisory
- 1033378 vdb-entry
- HPSBHF03289 vendor-advisory
- https://www.openssl.org/news/secadv_20150108.txt
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
- 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
- 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
- 91787 vdb-entry
- http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
- HPSBMU03396 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
- FEDORA-2015-0512 vendor-advisory