cgi-bin/webutil.pl in The Puppet Master WebUtil 2.3 allows remote attackers to execute arbitrary commands via shell metacharacters in the whois command.
https://exchange.xforce.ibmcloud.com/vulnerabilities/49820
https://exchange.xforce.ibmcloud.com/vulnerabilities/41400
http://www.securityfocus.com/archive/1/489961/100/0/threaded