19 Changes in MySQL 5.6.34 (2016-10-12, General Availability)

Packaging Notes

RPM and Debian packages now create the /var/lib/mysql-files directory, which is now the default value of the secure_file_priv system variable that specifies a directory for import and export operations. (Bug #24709892, Bug #24761774)

Security Notes

Incompatible Change: The secure_file_priv system variable is used to limit the effect of data import and export operations. The following changes have been made to how the server handles this variable:

secure_file_priv can be set to NULL to disable all import and export operations.
The server checks the value of secure_file_priv at startup and writes a warning to the error log if the value is insecure. A non-NULL value is considered insecure if it is empty, or the value is the data directory or a subdirectory of it, or a directory that is accessible by all users. If secure_file_priv is set to a nonexistent path, the server writes an error message to the error log and exits.

Previously, the secure_file_priv system variable was empty by default. Now the default value is platform specific and depends on the value of the INSTALL_LAYOUT CMake option, as shown in the following table.

`INSTALL_LAYOUT` Value	Default `secure_file_priv` Value
`STANDALONE`, `WIN`	`NULL`
`DEB`, `RPM`, `SLES`, `SVR4`	`/var/lib/mysql-files`
Otherwise	`mysql-files` under the `CMAKE_INSTALL_PREFIX` value

To specify the default secure_file_priv value explicitly if you are building from source, use the new INSTALL_SECURE_FILE_PRIVDIR CMake option. To specify a directory for the embedded server, set the new INSTALL_SECURE_FILE_PRIV_EMBEDDEDDIR option. Its default value is NULL.

(Bug #24679907, Bug #24695274, Bug #24707666)

The linked OpenSSL library for the MySQL Commercial Server has been updated to version 1.0.1u. For a description of issues fixed in this version, see http://www.openssl.org/news/vulnerabilities.html.
This change does not affect the Oracle-produced MySQL Community build of MySQL Server, which uses the yaSSL library instead. (Bug #24753389)
yaSSL was upgraded to version 2.4.2. This upgrade corrects issues with: Potential AES side channel leaks; DSA padding for unusual sizes; the SSL_CTX_load_verify_locations() OpenSSL compatibility function failing to handle long path directory names. (Bug #24512715, Bug #24740291)