Asseco SEE iBank FX Client 2.0.93 Privilege Escalation

`Asseco SEE iBank FX Client <= 2.0.9.3 Local Privilege Escalation Vulnerability  
  
  
Vendor: Asseco SEE  
Product web page: http://www.asseco.com  
Affected version: 2.0.9.3 (Build 22.06.2011) - Desktop/Enterprise Edition  
1.2  
1.1.5.1270 (Service Pack 5) - Desktop Edition  
1.1.5.1247  
1.0  
  
Application download resource: http://24x7.com.mk/Download.aspx  
http://www.24x7.rs/eng/content.asp?idmenu1=23&idmenu2=33  
  
Summary: FX Client is an offline application for e-banking that is intended only  
for legal entities.  
  
Desc: The application is vulnerable to an elevation of privileges vulnerability  
which can be used by a simple user that can change the executable file with a  
binary of choice. The vulnerability exist due to the improper permissions, with  
the 'F' flag (full) for the 'Everyone' and 'Users' group, for the 'RichClient.exe'  
and 'fxclient.exe' binary files making them world-writable. After you replace the  
binary with your rootkit, on reboot you get SYSTEM privileges.  
  
  
Tested on: Microsoft Windows 7 Ultimate SP1 (EN) 32/64bit  
Microsoft Windows 7 Professional SP1 (EN) 32/64bit  
Microsoft Windows XP Professional SP3 (EN) 32bit  
  
  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
@zeroscience  
  
  
Advisory ID: ZSL-2014-5168  
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2014-5168.php  
  
CWE ID: 276  
CWE URL: https://cwe.mitre.org/data/definitions/276.html  
  
  
10.01.2014  
  
---  
  
  
C:\Program Files (x86)\PEXIM\FXClient>icacls RichClient.exe  
RichClient.exe NT AUTHORITY\SYSTEM:(I)(F)  
BUILTIN\Administrators:(I)(F)  
BUILTIN\Users:(I)(F)  
  
Successfully processed 1 files; Failed processing 0 files  
  
C:\Program Files (x86)\PEXIM\FXClient>  
  
--  
  
C:\Program Files (x86)\Pexim Solutions\FX Client>icacls fxclient.exe  
fxclient.exe Everyone:(F)  
NT AUTHORITY\SYSTEM:(F)  
  
Successfully processed 1 files; Failed processing 0 files  
  
C:\Program Files (x86)\Pexim Solutions\FX Client>  
  
`