CVE-2016-0703

MEDIUM

OpenSSL < 0.9.8zf, 1.0.0 < 1.0.0r, 1.0.1 < 1.0.1m, 1.0.2 < 1.0.2a - SSLv2 CLIENT-MASTER-KEY Info Exposure

Title source: llm

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.

References (31)

Core 31

Core References

Third Party Advisory, VDB Entry vdb-entry

http://www.securityfocus.com/bid/83743

Mailing List vendor-advisory

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html

Mailing List vendor-advisory

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html

Mailing List vendor-advisory

http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.html

Various Sources vendor-advisory

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-openssl

Mailing List vendor-advisory

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.html

Mailing List vendor-advisory

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html

Mailing List vendor-advisory

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.html

Mailing List vendor-advisory

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html

Third Party Advisory vendor-advisory

https://security.gentoo.org/glsa/201603-15

Mailing List vendor-advisory

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html

Mailing List vendor-advisory

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00017.html

Mailing List vendor-advisory

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html

Mailing List vendor-advisory

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html

Mailing List vendor-advisory

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html

Vendor Advisory

http://openssl.org/news/secadv/20160301.txt

Vendor Advisory

http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html

Vendor Advisory

http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html

Vendor Advisory

http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html

Vendor Advisory

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759

Various Sources vendor-advisory

https://security.FreeBSD.org/advisories/FreeBSD-SA-16:12.openssl.asc

Third Party Advisory, VDB Entry vdb-entry

http://www.securitytracker.com/id/1035133

Vendor Advisory

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03741en_us

Vendor Advisory

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05141441

Vendor Advisory

https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

Vendor Advisory

https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=ae50d8270026edf5b3c7f8aaa0c6677462b33d97

Vendor Advisory

https://www.openssl.org/news/secadv/20160301.txt

Various Sources

https://drownattack.com

Various Sources

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40168

Various Sources

https://www.arista.com/en/support/advisories-notices/security-advisories/1260-security-advisory-18

Vendor Advisory

http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html

Scores

CVSS v3 5.9

EPSS 0.0486

EPSS Percentile 89.7%

Attack Vector NETWORK

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

Details

CWE

CWE-200

Status published

Products (33)

openssl/openssl 1.0.0 (6 CPE variants)

openssl/openssl 1.0.0a

openssl/openssl 1.0.0b

openssl/openssl 1.0.0c

openssl/openssl 1.0.0d

openssl/openssl 1.0.0e

openssl/openssl 1.0.0f

openssl/openssl 1.0.0g

openssl/openssl 1.0.0h

openssl/openssl 1.0.0i

... and 23 more

Published Mar 02, 2016

Tracked Since Feb 18, 2026