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Vulnerability record · CVE-2016-0704 · published 2 March 2016

CVE-2016-0704: Openssl information exposure vulnerability

OOpenssl · Openssl

An oracle protection mechanism in 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 overwrites incorrect MASTER-KEY bytes during use of export cipher suites, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.

5.9 CVSS 3.0 Medium EPSS 6.9% · top 6.1% CWE-200 · Information exposure
5.9CVSS 3.0 base score, v2 4.3
6.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
58References
17 Jun 2026Last modified by NVD

Description

An oracle protection mechanism in 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 overwrites incorrect MASTER-KEY bytes during use of export cipher suites, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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 Vendor Advisory
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/83764
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://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
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

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Source: NIST National Vulnerability Database (record CVE-2016-0704), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.