Skype DLL Hijacking

`Hi,  
  
There are a dll planting vuln in skype installer. This vuln had been  
reported to Microsoft but they decided not fix this.  
  
Here is the vulnerability details:  
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Skype installer in Windows is open to DLL hijacking.  
  
Skype looks for a specific DLL by dynamically going through a set of  
predefined directories. One of the directory being scanned is the  
installation directory, and this is exactly what is abused in this  
vulnerability.  
  
Reproduce Notes:  
1. Download this dll  
https://mega.nz/#!b4ViSLJL!Pv99pN2d_WxsUHGPH0Ej3onwVeSdh41mpyKfQJfAq8E  
2. Copy msi.dll to Downloads directory  
3. download skype installer  
4. execute the downloaded installer from your "Downloads" directory;  
Observed behavior: message box ahyhya  
  
Another dll can be used to hijack: dpapi.dll cryptui.dll  
------  
  
Regards,  
Tien  
  
  
  
--   
Tien Phan  
Blog : http://tienpp.blogspot.com  
twitter : @_razybo_ <http://twitter.com/_razybo_>  
  
  
`