CVE-2016-0703 Information

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Description

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.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

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://drownattack.com https://git.openssl.org/?p=openssl.git;a=commit;h=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.openssl.org/news/secadv/20160301.txt

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.9