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."
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade mariadb | Aug 30, 2017 | Jan 20, 2016 |
| Amazon_linux | — | Upgrade mysql56Upgrade mysql55 | May 18, 2016 | Jan 27, 2016 |
| Centos_linux | — | Upgrade mariadb-testUpgrade mariadb-embeddedUpgrade mariadbUpgrade mariadb-embedded-develUpgrade mariadb-libsUpgrade mariadb-benchUpgrade mariadb-serverUpgrade mariadb-devel | Jul 6, 2016 | Jan 27, 2016 |
| Debian | — | Upgrade mariadb-10.0Upgrade mysql-5.5 | Feb 2, 2016 | Jan 27, 2016 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Jul 26, 2016 |
| Freebsd | — | Upgrade mariadb101-serverUpgrade mysql55-serverUpgrade mysql57-serverUpgrade mariadb100-serverUpgrade mysql56-serverUpgrade percona55-serverUpgrade percona-serverUpgrade mariadb55-server | Dec 10, 2025 | Apr 30, 2016 |
| Huawei Euleros 2_0_sp1 | — | Upgrade mariadbUpgrade mariadb-develUpgrade mariadb-benchUpgrade mariadb-serverUpgrade mariadb-embeddedUpgrade mariadb-testUpgrade mariadb-libs | Nov 30, 2017 | Jan 27, 2016 |
| Mariadb Mariadb | — | Upgrade MariaDB to the latest version | Mar 4, 2025 | Jan 27, 2016 |
| Oracle Mysql | — | Upgrade to the latest version of MySQL | Apr 28, 2016 | Jan 27, 2016 |
| Oracle_linux | — | Upgrade mariadb-libsUpgrade mariadb-testUpgrade mariadb-embeddedUpgrade mariadb-serverUpgrade mariadb-develUpgrade mariadb-benchUpgrade mariadb-embedded-develUpgrade mariadb | Apr 7, 2016 | Jan 27, 2016 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Nov 30, 2015 |
| Suse | — | Upgrade libmysql55client_r18-x86Upgrade libmysql55client18-32bitUpgrade libmysql55client18Upgrade libmysqlclient_r18Upgrade libmysqld-develUpgrade libmysql55client_r18Upgrade libmysqlclient18-32bitUpgrade libmysqld18Upgrade mariadbUpgrade libmysqlclient18Upgrade mariadb-100-errormessagesUpgrade mariadb-toolsUpgrade mariadb-clientUpgrade mysqlUpgrade mysql-toolsUpgrade libmysqld19Upgrade libmariadbd19Upgrade libmysqlclient_r18-32bitUpgrade libmysql55client_r18-32bitUpgrade libmariadbd-develUpgrade libmysqlclient-develUpgrade mysql-clientUpgrade mariadb-errormessagesUpgrade libmysql55client18-x86 | May 11, 2016 | Jan 27, 2016 |
| Ubuntu | — | Upgrade mysql-server-5.6Upgrade mysql-server-5.5Upgrade mysql-server-5.7 | Apr 21, 2016 | Jan 27, 2016 |
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub