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CVE-2016-2047

5.9 · MEDIUM

The ssl_verify_server_cert function in sql-common/client.c in MariaDB before 5.5.47, 10.0.x before 10.0.23, and 10.1.x before 10.1.10; Oracle MySQL 5.5.48 and earlier, 5.6.29 and earlier, and 5.7.1…

Published Jan 27, 2016CWE-254EPSS 3.74%

Overview

CVE-2016-2047 is a medium-severity vulnerability. It was published on January 27, 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

The ssl_verify_server_cert function in sql-common/client.c in MariaDB before 5.5.47, 10.0.x before 10.0.23, and 10.1.x before 10.1.10; Oracle MySQL 5.5.48 and earlier, 5.6.29 and earlier, and 5.7.11 and earlier; and Percona Server do not properly verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via a "/CN=" string in a field in a certificate, as demonstrated by "/OU=/CN=bar.com/CN=foo.com."

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

Reflists.opensuse.org/opensuse-security-announce/2016-05/msg00035.htmlReflists.opensuse.org/opensuse-security-announce/2016-05/msg00053.htmlReflists.opensuse.org/opensuse-security-announce/2016-06/msg00033.htmlReflists.opensuse.org/opensuse-security-announce/2016-06/msg00034.htmlReflists.opensuse.org/opensuse-security-announce/2016-06/msg00051.htmlReflists.opensuse.org/opensuse-security-announce/2016-06/msg00053.htmlRefrhn.redhat.com/errata/RHSA-2016-0534.htmlRefrhn.redhat.com/errata/RHSA-2016-0705.htmlRefrhn.redhat.com/errata/RHSA-2016-1480.htmlRefrhn.redhat.com/errata/RHSA-2016-1481.html

How CyberStrike helps

Frequently asked questions

What is CVE-2016-2047?

CVE-2016-2047 is a medium-severity vulnerability. It was published on January 27, 2016 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

How severe is CVE-2016-2047?

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-2016-2047?

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-2016-2047?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-2047 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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