Nexon Games - Unquoted Path Privilege Escalation

ID 1337DAY-ID-25589
Type zdt
Reporter Cyril Vallicari
Modified 2016-05-16T00:00:00


Exploit for windows platform in category local exploits

# Exploit Title: Multiples Nexon Games - Privilege Escalation Unquoted path vulnerabilities
# Date: 13/05/2016
# Exploit Author : Cyril Vallicari
# Vendor Homepage:
# Softwares Links: (DirtyBomb)
#                      (CSNZ)
# Versions: Dirty Bomb r56825 USA_EU / CSNZ : 0.0.18845.1
# Tested on: Windows 7 x64 SP1 (but it should works on all windows version)
Description : Multiples Nexon Game, including but not limited to Dirty Bomb
and Counter-Strike Nexon : Zombies,  are Prone to unquoted path
vulnerability. They fail to quote correctly the command that call for
BlackXcht.aes, which is a part of the anti-cheat system (Nexon  Game
Security). Probably all Nexon games calling this file are affected.
This could potentially allow an authorized but non-privileged local user to
execute arbitrary code with elevated privileges on the system.
Put a software named Program.exe in C:
Launch the game via steam
When BlackXcht.aes is called, Program.exe is executed with same rights as
POC video :
Patch :
Patch for Dirty bomb - Upgrade to r57457 USA_EU

# [2018-04-10]  #