f.lux DLL Hijacking

`Aloha,  
  
f.lux suffers from a DLL hijacking vulnerability.  
  
"flux-setup.exe" loads and executes dll from its "application directory".  
  
For software downloaded with a web browser the applicationdirectory is  
typically the user's "Downloads" directory: see <  
https://insights.sei.cmu.edu/cert/2008/09/carpet-bombing-and-directory-poisoning.html  
>,  
<http://blog.acrossecurity.com/2012/02/downloads-folder-binary-planting.html  
>  
and <http://seclists.org/fulldisclosure/2012/Aug/134> for "prior art" about  
this well-known and well-documented vulnerability.  
  
  
If an attacker places malicious DLL in the user's "Downloads" directory  
(for example per "drive-by download" or "social engineering") this  
vulnerability becomes a remote code execution.  
  
  
Proof of concept/demonstration:  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
1. Create a malicious dll file and save it in your "Downloads" directory.  
  
2. Download "flux-setup.exe" from https://justgetflux.com/ and save it in  
your "Downloads" directory.  
  
3. Execute "flux-setup.exe" from your "Downloads" directory.  
  
4. Malicious dll file gets executed.  
  
Fixes will be available in next build.  
  
Chao!!  
Himanshu Mehta  
`