Multiple buffer overflows in the WebHPVCInstall.HPVirtualRooms14 ActiveX control in HPVirtualRooms14.dll 1.0.0.100 as used in the installation process for HP Virtual Rooms allow remote attackers to execute arbitrary code via a long (1) AuthenticationURL (2) PortalAPIURL or (3) cabroot property value. NOTE: some of these details are obtained from third party information.