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CVE-2016-0704

5.9 · MEDIUM

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…

Published Mar 2, 2016CWE-200EPSS 6.90%

Overview

CVE-2016-0704 is a medium-severity vulnerability. It was published on March 2, 2016 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refkb.juniper.net/InfoCenter/index?page=content&id=JSA10759Reflists.opensuse.org/opensuse-security-announce/2016-03/msg00001.htmlReflists.opensuse.org/opensuse-security-announce/2016-03/msg00002.htmlReflists.opensuse.org/opensuse-security-announce/2016-03/msg00003.htmlReflists.opensuse.org/opensuse-security-announce/2016-03/msg00004.htmlReflists.opensuse.org/opensuse-security-announce/2016-03/msg00006.htmlReflists.opensuse.org/opensuse-security-announce/2016-03/msg00007.htmlReflists.opensuse.org/opensuse-security-announce/2016-03/msg00009.htmlReflists.opensuse.org/opensuse-security-announce/2016-03/msg00010.htmlReflists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html

How CyberStrike helps

Frequently asked questions

What is CVE-2016-0704?

CVE-2016-0704 is a medium-severity vulnerability. It was published on March 2, 2016 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

How severe is CVE-2016-0704?

This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-0704?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-0704?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-0704 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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