RealNetworks GameHouse RealArcade Installer (aka ActiveMARK Game Installer) 2.6.0.481 and 3.0.7 uses weak permissions (Create Files/Write Data) for the GameHouse Games directory tree, which allows local users to gain privileges via a Trojan horse DLL in an individual game's directory, as demonstrated by DDRAW.DLL in the Zuma Deluxe directory.