CVE-2016-0704

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.

Category

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 9.79% Top 10%
Vendor Advisory opensuse.org Vendor Advisory FreeBSD.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory cisco.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory openssl.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html vendor advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:12.openssl.asc vendor advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html vendor advisory
http://www.securityfocus.com/bid/83764 vdb entry
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.html vendor advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40168
https://drownattack.com
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=ae50d8270026edf5b3c7f8aaa0c6677462b33d97
http://openssl.org/news/secadv/20160301.txt vendor advisory
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-openssl vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html vendor advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03741en_us
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.html vendor advisory
https://www.openssl.org/news/secadv/20160301.txt
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html vendor advisory
https://security.gentoo.org/glsa/201603-15 vendor advisory
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html vendor advisory
http://www.securitytracker.com/id/1035133 vdb entry
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00017.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html vendor advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

Frequently Asked Questions

What is the severity of CVE-2016-0704?
CVE-2016-0704 has been scored as a medium severity vulnerability.
How to fix CVE-2016-0704?
To fix CVE-2016-0704, 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-2016-0704 being actively exploited in the wild?
It is possible that CVE-2016-0704 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~10% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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