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Native Instruments Service Center 2.2.5 Local Privilege Escalation

Native Instruments Service Center 2.2.5 Local Privilege Escalation
Posted Nov 20, 2010
Authored by LiquidWorm | Site zeroscience.mk

Native Instruments Service Center version 2.2.5 suffers from a local privilege escalation vulnerability.

tags | advisory, local
MD5 | 287a9e26a26b8327989e913ce1572774

Native Instruments Service Center 2.2.5 Local Privilege Escalation

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Native Instruments Service Center 2.2.5 Local Privilege Escalation Vulnerability


Vendor: Native Instruments GmbH
Product web page: http://www.native-instruments.com
Affected version: 2.2.5 (R596)

Summary: The NI Service Center is a service used for Product Activation.

Desc: The Native Instruments's Service Center suffers from 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 "C" flag (Change(write)) for "Everyone",
for the installed files ServiceCenter.exe and Reloader.exe.

Tested on: Microsoft Windows XP Professional SP3 (English)


Vulnerability discovered by: Gjoko 'LiquidWorm' Krstic
liquidworm gmail com
Zero Science Lab - http://www.zeroscience.mk


Advisory ID: ZSL-2010-4981
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2010-4981.php

06.11.2010


PoC:

----------------------------------------------------------------------------

C:\Program Files\Native Instruments\Service Center>dir
Volume in drive C has no label.
Volume Serial Number is 7C64-FE80

Directory of C:\Program Files\Native Instruments\Service Center

07.11.2010 19:52 <DIR> .
07.11.2010 19:52 <DIR> ..
05.11.2010 17:58 <DIR> conf
05.11.2010 17:58 <DIR> Documentation
05.11.2010 17:57 738.632 Reloader.exe
05.11.2010 17:58 10.650.440 ServiceCenter.exe
2 File(s) 11.389.072 bytes
4 Dir(s) 9.880.768.512 bytes free

C:\Program Files\Native Instruments\Service Center>cacls ServiceCenter.exe
C:\Program Files\Native Instruments\Service Center\ServiceCenter.exe BUILTIN\Administrators:F
Everyone:C
NT AUTHORITY\SYSTEM:F


C:\Program Files\Native Instruments\Service Center>cacls Reloader.exe
C:\Program Files\Native Instruments\Service Center\Reloader.exe BUILTIN\Administrators:F
Everyone:C
NT AUTHORITY\SYSTEM:F


C:\Program Files\Native Instruments\Service Center>

----------------------------------------------------------------------------
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