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Ubuntu Security Notice USN-3078-1
September 13, 2016

mysql-5.5, mysql-5.7 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

MySQL could be made to run programs as an administrator.

Software Description:
- mysql-5.7: MySQL database
- mysql-5.5: MySQL database

Details:

Dawid Golunski discovered that MySQL incorrectly handled configuration
files. A remote attacker could possibly use this issue to execute arbitrary
code with root privileges.

MySQL has been updated to 5.5.52 in Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
Ubuntu 16.04 LTS has been updated to MySQL 5.7.15.

In addition to security fixes, the updated packages contain bug fixes,
new features, and possibly incompatible changes.

Please see the following for more information:
https://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-51.html
https://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-52.html
https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-14.html
https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-15.html

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS:
  mysql-server-5.7                5.7.15-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
  mysql-server-5.5                5.5.52-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
  mysql-server-5.5                5.5.52-0ubuntu0.12.04.1

In general, a standard system update will make all the necessary changes.

References:
  https://www.ubuntu.com/usn/usn-3078-1
  CVE-2016-6662

Package Information:
  https://launchpad.net/ubuntu/+source/mysql-5.7/5.7.15-0ubuntu0.16.04.1
  https://launchpad.net/ubuntu/+source/mysql-5.5/5.5.52-0ubuntu0.14.04.1
  https://launchpad.net/ubuntu/+source/mysql-5.5/5.5.52-0ubuntu0.12.04.1