| Package | Affected versions | Patched versions |
|---|---|---|
| mariadb | ≥ 10.0.0, < 10.0.23≥ 10.1.0, < 10.1.10≥ 5.5.20, < 5.5.47 | 10.0.2310.1.105.5.47 |
| mysql | ≥ 5.5.0, ≤ 5.5.48≥ 5.6.0, ≤ 5.6.29≥ 5.7.0, ≤ 5.7.11 |
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."
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