CVE-2015-0205

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.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 19.07% Top 10%
Vendor Advisory opensuse.org Vendor Advisory cisco.com Vendor Advisory marc.info Vendor Advisory marc.info Vendor Advisory fedoraproject.org Vendor Advisory marc.info Vendor Advisory mandriva.com Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory marc.info Vendor Advisory marc.info Vendor Advisory mandriva.com Vendor Advisory marc.info Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory openssl.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://exchange.xforce.ibmcloud.com/vulnerabilities/99708 vdb entry
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00021.html vendor advisory
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150310-ssl vendor advisory
https://github.com/openssl/openssl/commit/1421e0c584ae9120ca1b88098f13d6d2e90b83a3
http://marc.info/?l=bugtraq&m=144050155601375&w=2 vendor advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
http://www.securityfocus.com/bid/71941 vdb entry
http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
http://marc.info/?l=bugtraq&m=143748090628601&w=2 vendor advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888
http://lists.fedoraproject.org/pipermail/package-announce/2015-January/148363.html vendor advisory
http://www.securitytracker.com/id/1033378 vdb entry
http://marc.info/?l=bugtraq&m=142721102728110&w=2 vendor advisory
https://www.openssl.org/news/secadv_20150108.txt vendor advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
http://www.mandriva.com/security/advisories?name=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
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00037.html vendor advisory
http://rhn.redhat.com/errata/RHSA-2015-0066.html vendor advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10108
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00027.html vendor advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10102
http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00026.html vendor advisory
http://marc.info/?l=bugtraq&m=144050297101809&w=2 vendor advisory
http://www.securityfocus.com/bid/91787 vdb entry
http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
http://marc.info/?l=bugtraq&m=144050205101530&w=2 vendor advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2015:062 vendor advisory
https://support.citrix.com/article/CTX216642
http://marc.info/?l=bugtraq&m=144050254401665&w=2 vendor advisory
https://bto.bluecoat.com/security-advisory/sa88
http://www.debian.org/security/2015/dsa-3125 vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147938.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-0205?
CVE-2015-0205 has been scored as a medium severity vulnerability.
How to fix CVE-2015-0205?
To fix CVE-2015-0205, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-0205 being actively exploited in the wild?
It is possible that CVE-2015-0205 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~19% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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