The system.openURL function in StoneTrip Ston3D StandalonePlayer (aka S3DPlayer StandAlone) 1.6.2.4 and 1.7.0.1 and WebPlayer (aka S3DPlayer Web) 1.6.0.0 allows remote attackers to execute arbitrary commands via shell metacharacters in the first argument (the sURL argument).
http://www.securityfocus.com/bid/35105
http://www.securityfocus.com/archive/1/503887/100/0/threaded