An unauthenticated user can create a link with reflected Javascript code inside the backurl parameter and send it to other authenticated users in order to create a fake account with predefined login, password and role in Zabbix Frontend.
{ "binaries": [ { "binary_name": "zabbix-agent", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-agent-dbgsym", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-agent2", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-agent2-dbgsym", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-frontend-php", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-java-gateway", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-proxy-mysql", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-proxy-mysql-dbgsym", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-proxy-pgsql", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-proxy-pgsql-dbgsym", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-proxy-sqlite3", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-proxy-sqlite3-dbgsym", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-server-mysql", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-server-mysql-dbgsym", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-server-pgsql", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-server-pgsql-dbgsym", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-web-service", "binary_version": "1:6.0.29+dfsg-1" }, { "binary_name": "zabbix-web-service-dbgsym", "binary_version": "1:6.0.29+dfsg-1" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }