The League of Legends installer would install the League of Legends screensaver along with a service. The service would be called 'lolscreensaver'. This particular service was misconfigured such that the service binary path was unquoted. When the screensaver is installed to 'C:\Riot Games', the issue is not exploitable. However, during the installation process, users are able to specify a directory to install to. When a user chooses to install this to say an external drive, this becomes exploitable.
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