Multiple cross-site scripting (XSS) vulnerabilities in the formatQuery function in frontends/php/include/classes/class.curl.php in Zabbix before 1.8.3rc1 allow remote attackers to inject arbitrary web script or HTML via the (1) filter_set, (2) show_details, (3) filter_rst, or (4) txt_select parameters to the triggers page (tr_status.php). NOTE: some of these details are obtained from third party information.

SQL injection vulnerability in the user.authenticate method in the API in Zabbix 1.8 before 1.8.2 allows remote attackers to execute arbitrary SQL commands via the user parameter in JSON data to api_jsonrpc.php.

SQL injection vulnerability in the get_history_lastid function in the nodewatcher component in Zabbix Server before 1.6.8 allows remote attackers to execute arbitrary SQL commands via a crafted request, possibly related to the send_history_last_id function in zabbix_server/trapper/nodehistory.c.

The NET_TCP_LISTEN function in net.c in Zabbix Agent before 1.6.7, when running on FreeBSD or Solaris, allows remote attackers to bypass the EnableRemoteCommands setting and execute arbitrary commands via shell metacharacters in the argument to net.tcp.listen. NOTE: this attack is limited to attacks from trusted IP addresses.

The process_trap function in trapper/trapper.c in Zabbix Server before 1.6.6 allows remote attackers to cause a denial of service (crash) via a crafted request with data that lacks an expected : (colon) separator, which triggers a NULL pointer dereference.

The node_process_command function in Zabbix Server before 1.8 allows remote attackers to execute arbitrary commands via a crafted request.

The zbx_get_next_field function in libs/zbxcommon/str.c in Zabbix Server before 1.6.8 allows remote attackers to cause a denial of service (crash) via a request that lacks expected separators, which triggers a NULL pointer dereference, as demonstrated using the Command keyword.

zabbix_agentd in ZABBIX 1.4.4 allows remote attackers to cause a denial of service (CPU and connection consumption) via multiple vfs.file.cksum commands with a special device node such as /dev/urandom or /dev/zero.

zabbix_agentd 1.1.4 in ZABBIX before 1.4.3 runs "UserParameter" scripts with gid 0, which might allow local users to gain privileges.

Buffer overflow in ZABBIX before 1.1.5 has unknown impact and attack vectors related to "SNMP IP addresses."