source: http://www.securityfocus.com/bid/234/info

The names and mappings of kernel objects in NT are cached in the "object namespace". In this area, DLL mappings are kept in a section called KnownDlls. By manipulating the namespace, it is possible to redirect calls to arbitrary dlls.

https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/bin-sploits/19198.zip