WinSaber Privilege Escalation

2016-08-02T00:00:00
ID PACKETSTORM:138152
Type packetstorm
Reporter ZwX
Modified 2016-08-02T00:00:00

Description

                                        
                                            `Document Title:  
===============  
WinSaber - Unquoted Service Path Privilege Escalation  
  
  
References (Source):  
====================  
http://www.vulnerability-lab.com/get_content.php?id=1879  
  
  
Release Date:  
=============  
2016-07-29  
  
  
Vulnerability Laboratory ID (VL-ID):  
====================================  
1879  
  
  
Common Vulnerability Scoring System:  
====================================  
4.2  
  
  
Product & Service Introduction:  
===============================  
WinSaber.exe is an executable files developed by Innovative Knowledge for the Windows Operating System.   
This virus can infect, replace, or corrupt existing EXE files, which can then lead to error messages. Such file and   
its related exe files gets into the computer system hiding behind the programs which user downloads.  
  
(Copy of the Homepage: http://www.mypccaresolutions.com/2016/07/14/get-rid-of-ads-bywinsaber-exe-virus/)  
  
  
Abstract Advisory Information:  
==============================  
An independent vulnerability laboratory researcher discovered an unqouted service path privilege escalation issue in the WinSaber Trojan software.  
  
  
Vulnerability Disclosure Timeline:  
==================================  
2016-07-26: Public Disclosure (Vulnerability Laboratory)  
  
  
Discovery Status:  
=================  
Published  
  
  
Affected Product(s):  
====================  
  
Exploitation Technique:  
=======================  
Local  
  
  
Severity Level:  
===============  
Medium  
  
  
Technical Details & Description:  
================================  
The application suffers from an unquoted search path issue impacting the trojan 'winSaber'. This could potentially allow   
an authorized but non-privileged local user to execute arbitrary code with system privileges on the system.  
  
  
Proof of Concept (PoC):  
=======================  
The issue can be exploited by local attackers with restricted system user account or network access and without user interaction.  
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.  
  
  
--- Privileges Logs ---  
C:Program FilesWinSaber>sc qc WinSaber  
[SC] QueryServiceConfig rA(c)ussite(s)  
  
SERVICE_NAME: WinSaber  
TYPE : 10 WIN32_OWN_PROCESS  
START_TYPE : 2 AUTO_START  
ERROR_CONTROL : 1 NORMAL  
BINARY_PATH_NAME : C:Program FilesWinSaberWinSaber.exe  
LOAD_ORDER_GROUP :  
TAG : 0  
DISPLAY_NAME : winsaber  
DEPENDENCIES :  
SERVICE_START_NAME : LocalSystem  
  
  
Security Risk:  
==============  
The security risk of the an unqouted service path privilege escalation in the malware software is estimated as medium. (CVSS 4.2)  
  
  
Credits & Authors:  
==================  
ZwX - [http://www.vulnerability-lab.com/show.php?user=ZwX]  
  
  
Disclaimer & Information:  
=========================  
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