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.
CVSS Severity (version 2.0):
Impact Subscore: 2.9
Exploitability Subscore: 8.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Required to exploit
Impact Type: Allows unauthorized disclosure of information
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20121203 MySQL Local/Remote FAST Account Password Cracking
20121205 Re: MySQL Local/Remote FAST Account Password Cracking
[oss-security] 20121206 Re: CVE request: Mysql/Mariadb insecure salt-usage