Design/Logic Flaw

cgitest.cgi in AirLive BU-2015 with firmware 1.03.18, BU-3026 with firmware 1.43, and MD-3025 with firmware 1.81 allows remote attackers to execute arbitrary OS commands via shell metacharacters after an "&" ampersand in the writemac writepid, writemsn, writetan, or writehdv parameter...