The Agent (aka AgentController) servlet in HP ProCurve Manager (PCM) 3.20 and 4.0, PCM+ 3.20 and 4.0, and Identity Driven Manager (IDM) 4.0 allows remote attackers to execute arbitrary commands via a HEAD request, aka ZDI-CAN-1745.
http://zerodayinitiative.com/advisories/ZDI-13-228/
http://www.securitytracker.com/id/1029010