Oracle MySQL and MariaDB 5.5.x before 5.5.29, 5.3.x before 5.3.12, and
5.2.x before 5.2.14 does not modify the salt during multiple
executions of the change_user command within the same connection which
makes it easier for remote authenticated users to conduct brute force
password guessing attacks.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
FULLDISC:20121203 MySQL Local/Remote FAST Account Password Cracking
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