360 Total Security 2016 DLL Hijacking

`Aloha,  
  
*360TSE_Setup_8.2.0.1039.exe* loads and executes WindowsCodecs.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 one of the above named 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 malicious dll file and save it as WindowsCodecs.dll in your  
"Downloads" directory.  
  
2. Download 360 Total Security 2016 installer from  
https://www.360totalsecurity.com/en/  
and save it in your "Downloads" directory.  
  
3. Execute 360TSE_Setup_8.2.0.1039.exe from your "Downloads" directory.  
  
4. Malicious dll file gets executed.  
  
Chao!!  
  
Thanks & Regards,  
Himanshu Mehta  
`