Hex : Shard of Fate 1.0.1.026 – Unquoted Path Privilege Escalation
----------------------------------------------------------------------------------------------------------------- # Exploit Title: Hex : Shard of Fate 1.0.1.026 - Privilege Escalation Unquoted path vulnerability # Date: 15/05/2016 # Exploit Author : Cyril Vallicari # Vendor Homepage: http://gameforge.com # Software Link: https://hex.gameforge.com/ or via steam # Version: 1.0.1.026 and probably prior # Tested on: Windows 7 x64 SP1 (but it should works on all windows version) Summary : Hex: Shard of Fate is a new breed of digital card game, combining classic TCG gameplay with elements of an online RPG Description : The game executable is prone to an unquoted path vulnerability. When you go to the in-game store it fail to quote the following command which is used multiple times : C:/Program Files (x86)/Steam/steamapps/common/HEX SHARDS OF FATE/Hex_Data/StreamingAssets/uWebKit/Windows/x86/UWKProcess.exe -parentpid 5808 -processdb QzovVXNlcnMvVXRpbGlzYXRldXIvQXBwRGF0YS9Mb2NhbExvdy9IRVggRW50ZXJ0YWlubWVu dC9IZXgvdVdlYktpdFByb2Nlc3MuZGI= This could potentially allow an authorized but non-privileged local user to execute arbitrary code with elevated privileges on the system. POC : Put a software named Program.exe in C: Launch the game or steam with high privileges and go to store POC video : https://www.youtube.com/watch?v=E1_1wZea1ck Patch : Still waiting, no reward so full disclosure after 10 days ----------------------------------------------------------------------------------------------------------------- |