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Asseco SEE iBank FX Client 2.0.9.3 - Local Privilege Escalation Vulnerability
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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>
Data
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01 Jul 2014 00:00Current
7.1High risk
Vulners AI Score7.1