Description
The ssl23_get_client_hello function in s23_srvr.c in OpenSSL 1.0.1 before 1.0.1i allows man-in-the-middle attackers to force the use of TLS 1.0 by triggering ClientHello message fragmentation in communication between a client and server that both support later TLS versions, related to a "protocol downgrade" issue.
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 | 1.0.1i-1 | — |
| Debian 13 | openssl | 1.0.1i-1 | — |
| Debian 12 | openssl | 1.0.1i-1 | — |
| Debian 7 | openssl | 1.0.1e-2+deb7u12 | DSA-2998-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | openssl | 1.0.1f-1ubuntu2.5 | USN-2308-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | openssl +4 | 1:1.0.1e-34.el7_0.4 | RHSA-2014:1052 |
| RHEL 6 | openssl +3 | 1.0.1e-16.el6_5.15 | RHSA-2014:1052 |
| RHEL 6 | rhev-hypervisor6 | 6.6-20150123.1.el6ev | RHSA-2015:0126 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhev Manager 3 | rhevm-spice-client +4 | 3.5-2.el6 | RHSA-2015:0197 |
| Red Hat Gluster Storage 2 | openssl +3 | 1.0.1e-16.el6_5.15 | RHSA-2014:1054 |
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_0.4 | ELSA-2014-1052 |
Advisories 10
- RHSA-2015:0197 Red Hat Security Advisory: rhevm-spice-client security and bug fix update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2015:0126 Red Hat Security Advisory: rhev-hypervisor6 security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2014:1054 Red Hat Security Advisory: openssl security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2014:1052 Red Hat Security Advisory: openssl security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- USN-2308-1 openssl vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-2998-1 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
- 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-2023-0498 OpenSSL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 27, 2023
- ELSA-2014-1052 Moderate: openssl security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 13, 2014
References
- openSUSE-SU-2014:1052 vendor-advisory
- http://linux.oracle.com/errata/ELSA-2014-1052.html
- 60221 third-party-advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21682293
- 61184 third-party-advisory
- SSRT101846 vendor-advisory
- 60022 third-party-advisory
- https://www.openssl.org/news/secadv_20140806.txt
- 61017 third-party-advisory
- RHSA-2015:0197 vendor-advisory
- 60377 third-party-advisory
- SSRT101818 vendor-advisory
- 59887 third-party-advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21683389
- HPSBMU03304 vendor-advisory
- http://www.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-372998.htm
- 60890 third-party-advisory
- GLSA-201412-39 vendor-advisory
- http://support.f5.com/kb/en-us/solutions/public/15000/500/sol15564.html
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888
- HPSBMU03260 vendor-advisory
- 60803 third-party-advisory
- 59700 third-party-advisory
- FEDORA-2014-9308 vendor-advisory
- 1030693 vdb-entry
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
- openssl-cve20143511-sec-bypass(95162) vdb-entry
- http://www.splunk.com/view/SP-CAAANHS
- 60917 third-party-advisory
- http://www.tenable.com/security/tns-2014-06
- https://kc.mcafee.com/corporate/index?page=content&id=SB10084
- 60493 third-party-advisory
- 59710 third-party-advisory
- 60921 third-party-advisory
- 69079 vdb-entry
- 61043 third-party-advisory
- 60810 third-party-advisory
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=280b1f1ad12131defcd986676a8fc9717aaa601b
- http://www-01.ibm.com/support/docview.wss?uid=nas8N1020240
- 61100 third-party-advisory
- FreeBSD-SA-14:18 vendor-advisory
- 61775 third-party-advisory
- DSA-2998 vendor-advisory
- HPSBMU03263 vendor-advisory
- FEDORA-2014-9301 vendor-advisory
- 61959 third-party-advisory
- 59756 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1127504
- HPSBMU03267 vendor-advisory
- HPSBMU03261 vendor-advisory
- RHSA-2015:0126 vendor-advisory
- http://aix.software.ibm.com/aix/efixes/security/openssl_advisory10.asc
- 58962 third-party-advisory
- http://www.arubanetworks.com/support/alerts/aid-08182014.txt
- 60938 third-party-advisory
- 60684 third-party-advisory
- https://support.citrix.com/article/CTX216642
- [syslog-ng-announce] 20140910 syslog-ng Premium Edition 5 LTS (5.0.6a) has been released mailing-list
- https://techzone.ergon.ch/CVE-2014-3511
- http://www-01.ibm.com/support/docview.wss?uid=swg21686997