Description
The ssl23_get_client_hello function in s23_srvr.c in OpenSSL 0.9.8zc, 1.0.0o, and 1.0.1j does not properly handle attempts to use unsupported protocols, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an unexpected handshake, as demonstrated by an SSLv3 handshake to a no-ssl3 application with certain error handling. NOTE: this issue became relevant after the CVE-2014-3568 fix.
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-4squeeze18 | DLA-81-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | openssl | 1.0.1f-1ubuntu2.8 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openssl-1_1 | 1.1.1l-1.2 | openSUSE-SU-2024:11127-1 |
Advisories 4
- DLA-81-1 openssl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3125-1 openssl - security update Debian Security (DSA / DLA) · Mar 9, 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
- WID-SEC-2023-2068 Oracle MySQL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 15, 2023
References
- 71934 vdb-entry
- 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
- http://people.canonical.com/~ubuntu-security/cve/2014/CVE-2014-3569.html
- HPSBMU03409 vendor-advisory
- https://support.apple.com/HT204659
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- https://security-tracker.debian.org/tracker/CVE-2014-3569
- 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
- 1033378 vdb-entry
- HPSBHF03289 vendor-advisory
- openSUSE-SU-2016:0640 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
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=b82924741b4bd590da890619be671f4635e46c2b
- HPSBUX03244 vendor-advisory
- APPLE-SA-2015-04-08-2 vendor-advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10108
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=6ce9687b5aba5391fc0de50e18779eb676d0e04d
- 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
- http://rt.openssl.org/Ticket/Display.html?id=3571&user=guest&pass=guest
- https://bto.bluecoat.com/security-advisory/sa88
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=392fa7a952e97d82eac6958c81ed1e256e6b8ca5
- DSA-3125 vendor-advisory