The mysql user parameter configuration script (userparametermysql.conf) in the agent in Zabbix before 2.0.18, 2.2.x before 2.2.13, and 3.0.x before 3.0.3, when used with a shell other than bash, allows context-dependent attackers to execute arbitrary code or SQL commands via the mysql.size parameter.
The Frontend in Zabbix before 1.8.20rc2, 2.0.x before 2.0.11rc2, and 2.2.x before 2.2.2rc1 allows remote "Zabbix Admin" users to modify the media of arbitrary users via unspecified vectors.
The API in Zabbix before 1.8.20rc1, 2.0.x before 2.0.11rc1, and 2.2.x before 2.2.2rc1 allows remote authenticated users to spoof arbitrary users via the user name in a user.login request.
The user.login function in Zabbix before 1.8.16 and 2.x before 2.0.5rc1 allows remote attackers to override LDAP configuration via the cnf parameter.