CVE-2018-20434: Improper Neutralization of Special Elements used in an OS Command

LibreNMS 1.46 allows remote attackers to execute arbitrary OS commands by using the $POST'community' parameter to html/pages/addhost.inc.php during creation of a new device, and then making a /ajaxoutput.php?id=capture&format=text&type=snmpwalk&hostname=localhost request that triggers...