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  1. MariaDB Server
  2. MDEV-18131

MariaDB does not verify IP addresses from subject alternative names

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    Description

      We have a certificate with the following subject names:

      Subject: CN=127.0.0.1
      X509v3 Subject Alternative Name:
      IP Address:127.0.0.1, DNS:localhost

      When we connect with mysql --host=127.0.0.1 --ssl-ca=ca.pem --ssl-verify-server-cert with MariaDB certificate validation fails:

      ERROR 2026 (HY000): SSL connection error: SSL certificate validation failure

      However, this same command will succeed as is against a recent MySQL 5.7.23+ or Percona Server bin/mysql client. This command also succeeds if the DNS hostname i used ("mysql --host=localhost --protocol=tcp --ssl...")

      Offhand it appears that MariaDB only calls X509_check_host, but MySQL / Percona will additionally call X509_check_ip to validate an ip address. It seems that when there is at least one DNS entry in the subject alt name, the verification fails even if the common name would otherwise match.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. CONC-413 C/C may not compare IP address to Subject Alternative Name fields for server certificate verification

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-10594 SSL hostname verification fails for SubjectAltNames

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-18277 Client can't validate server certificate if SAN name used.

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-19560 Client may not compare IP address to Subject Alternative Name fields for server certificate verification

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. CONC-250 SSL hostname verification for SubjectAltNames

          • Major - Major loss of function.
          • Closed

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              wlad Vladislav Vaintroub
              andrew.garner Andrew Garner
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                Updated:
                Resolved:

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