A publicly disclosed vulnerability in the MySQL database could allow attackers to completely compromise some servers.

The vulnerability affects “all MySQL servers in default configuration in all version branches (5.7, 5.6, and 5.5) including the latest versions,” as well as the MySQL-derived databases MariaDB and Percona DB, according to Dawid Golunski, the researcher who found it.

The flaw, tracked as CVE-2016-6662, can be exploited to modify the MySQL configuration file (my.cnf) and cause an attacker-controlled library to be executed with root privileges if the MySQL process is started with the mysqld_safe wrapper script.

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Source: Security