Explain CVE-2015-0205
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.
Affected Products: n/a
References: [{'name': 'openssl-cve20150205-sec-bypass(99708)', 'tags': ['vdb-entry', 'x_refsource_XF'], 'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/99708'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html'}, {'name': 'openSUSE-SU-2015:0130', 'tags': ['vendor-advisory', 'x_refsource_SUSE'], 'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00021.html'}, {'name': '20150310 Multiple Vulnerabilities in OpenSSL (January 2015) Affecting Cisco Products', 'tags': ['vendor-advisory', 'x_refsource_CISCO'], 'url': 'http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150310-ssl'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://github.com/openssl/openssl/commit/1421e0c584ae9120ca1b88098f13d6d2e90b83a3'}, {'name': 'HPSBMU03409', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=144050155601375&w=2'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html'}, {'name': '71941', 'tags': ['vdb-entry', 'x_refsource_BID'], 'url': 'http://www.securityfocus.com/bid/71941'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html'}, {'name': 'HPSBMU03380', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=143748090628601&w=2'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888'}, {'name': 'FEDORA-2015-0601', 'tags': ['vendor-advisory', 'x_refsource_FEDORA'], 'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-January/148363.html'}, {'name': '1033378', 'tags': ['vdb-entry', 'x_refsource_SECTRACK'], 'url': 'http://www.securitytracker.com/id/1033378'}, {'name': 'HPSBHF03289', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=142721102728110&w=2'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://www.openssl.org/news/secadv_20150108.txt'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380'}, {'name': 'MDVSA-2015:019', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:019'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.oracle.com/technetwork/topics/security/cpuapr2015-2365600.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10679'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html'}, {'name': 'openSUSE-SU-2015:1277', 'tags': ['vendor-advisory', 'x_refsource_SUSE'], 'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00037.html'}, {'name': 'RHSA-2015:0066', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://rhn.redhat.com/errata/RHSA-2015-0066.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://kc.mcafee.com/corporate/index?page=content&id=SB10108'}, {'name': 'SUSE-SU-2015:0578', 'tags': ['vendor-advisory', 'x_refsource_SUSE'], 'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00027.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://kc.mcafee.com/corporate/index?page=content&id=SB10102'}, {'name': 'SUSE-SU-2015:0946', 'tags': ['vendor-advisory', 'x_refsource_SUSE'], 'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00026.html'}, {'name': 'HPSBMU03397', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=144050297101809&w=2'}, {'name': '91787', 'tags': ['vdb-entry', 'x_refsource_BID'], 'url': 'http://www.securityfocus.com/bid/91787'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html'}, {'name': 'HPSBMU03396', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=144050205101530&w=2'}, {'name': 'MDVSA-2015:062', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:062'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://support.citrix.com/article/CTX216642'}, {'name': 'HPSBMU03413', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=144050254401665&w=2'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://bto.bluecoat.com/security-advisory/sa88'}, {'name': 'DSA-3125', 'tags': ['vendor-advisory', 'x_refsource_DEBIAN'], 'url': 'http://www.debian.org/security/2015/dsa-3125'}, {'name': 'FEDORA-2015-0512', 'tags': ['vendor-advisory', 'x_refsource_FEDORA'], 'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147938.html'}]
CVE State: PUBLISHED