The ssl3_get_client_key_exchange function in s3_srvr.c in OpenSSL 1.0.2 before 1.0.2a, when client authentication and an ephemeral Diffie-Hellman ciphersuite are enabled, allows remote attackers to cause a denial of service (daemon crash) via a ClientKeyExchange message with a length of zero.

References

• https://nvd.nist.gov/vuln/detail/CVE-2015-1787
• https://bto.bluecoat.com/security-advisory/sa92
• https://bugzilla.redhat.com/show_bug.cgi?id=1202406
• https://git.openssl.org/?p=openssl.git;a=commit;h=b19d8143212ae5fbc9cebfd51c01f802fabccd33
• https://kc.mcafee.com/corporate/index?page=content&id=SB10110
• https://security.gentoo.org/glsa/201503-11
• https://www.openssl.org/news/secadv_20150319.txt
• http://marc.info/?l=bugtraq&m=143748090628601&w=2
• http://marc.info/?l=bugtraq&m=144050155601375&w=2
• http://marc.info/?l=bugtraq&m=144050297101809&w=2
• http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
• http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
• http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
• http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
• http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
• http://www.securityfocus.com/bid/73238
• http://www.securitytracker.com/id/1031929
• https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
• https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=b19d8143212ae5fbc9cebfd51c01f802fabccd33