Nicob has reported some vulnerabilities in ZABBIX, which can be exploited by malicious people to cause a DoS (Denial of Service), bypass certain security restrictions, conduct SQL injection attacks, or compromise a vulnerable system.

1) An input validation error in the ZABBIX agent can be exploited to bypass the "EnableRemoteCommands" restriction and execute arbitrary commands.

Successful exploitation requires that the application is running under FreeBSD or Solaris, and that the user is tricked into connecting to a malicious server.

2) An error in the "node_process_command()" function can be exploited to execute arbitrary commands via specially crafted data sent to a ZABBIX server.

3) Input passed to the "send_history_last_id()" function in zabbix_server/trapper/nodehistory.c is not properly sanitised before being used in an SQL query. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.

4) A NULL-pointer dereference error in the "process_trap()" function in zabbix_server/trapper/trapper.c can be exploited to cause a crash.

5) A NULL-pointer dereference error in the "zbx_get_next_field()" function in libs/zbxcommon/str.c can be exploited to cause a crash.

Solution
Update to version 1.8.

Provided and/or discovered by
Nicob

Changelog
Further details available to Secunia VIM customers

Original Advisory
http://archives.neohapsis.com/archives/fulldisclosure/current/0311.html
http://archives.neohapsis.com/archives/fulldisclosure/current/0312.html

https://support.zabbix.com/browse/ZBX-993
https://support.zabbix.com/browse/ZBX-1030
https://support.zabbix.com/browse/ZBX-1031
https://support.zabbix.com/browse/ZBX-1032
https://support.zabbix.com/browse/ZBX-1355

Deep Links
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