CVE-2016-0703

The get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a accepts a nonzero CLIENT-MASTER-KEY CLEAR-KEY-LENGTH value for an arbitrary cipher, which allows man-in-the-middle attackers to determine the MASTER-KEY value and decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.

Score

CVSS 3.0 5.9 Medium

Status

Modified - secalert@redhat.com

Published

2016-03-02

Last modified

2024-08-05

Weaknesses

CWE-200

Affected products

• Openssl (Openssl)

References

• http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00017.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.html
• http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.html
• http://openssl.org/news/secadv/20160301.txt
• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-openssl
• http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
• http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
• http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
• http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
• http://www.securityfocus.com/bid/83743
• http://www.securitytracker.com/id/1035133
• https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
• https://drownattack.com
• https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=ae50d8270026edf5b3c7f8aaa0c6677462b33d97
• https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03741en_us
• https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05141441
• https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40168
• https://security.FreeBSD.org/advisories/FreeBSD-SA-16:12.openssl.asc
• https://security.gentoo.org/glsa/201603-15
• https://www.arista.com/en/support/advisories-notices/security-advisories/1260-security-advisory-18