Without going into unnecessary details about CVE-2012-5612 bug; an authenticated database user could use this flaw to crash MySQL instance or even try executing some code. Is it a serious problem? Do you need to worry about it? I recently saw some comments that "My database is safe, only application can access it. Is it really a serious bug?" which scared me a bit. Such opinion might be fine but only for closed systems with limited access to MySQL, but what if you are hosting provider that share single MySQL instance between several accounts? Here, security matters a lot! Especially if you allow users to create test/demo accounts.
Read MoreFor those who don't know, several security vulnerabilities in MySQL were discovered recently and published to the security mailing lists. Yet another time, remote attacker can badly hit your production systems causing long downtime.
Read MoreA few days ago Sergei Golubchik of Monty Program sent an e-mail to the Open Source Security mailing list informing about a security vulnerability in MySQL authentication system. Under certain circumstances a remote attacker may easily gain access to MySQL database as any user and all they need to know is a valid user name (e.g. root user exists in nearly all installations). The problem has only been addressed in the most recent database versions.
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