source: https://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://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/19198.zip