Comodo Dragon Browser Privilege Escalation

2016-10-06T00:00:00
ID PACKETSTORM:139007
Type packetstorm
Reporter Yunus YILDIRIM
Modified 2016-10-06T00:00:00

Description

                                        
                                            ` Exploit Title: Comodo Dragon Browser Unquoted Service Path Privilege Escalation  
# Date: 24/09/2016  
# Author: Yunus YILDIRIM (@Th3GundY)  
# Team: CT-Zer0 (@CRYPTTECH)  
# Website: http://yildirimyunus.com  
# Contact: yunusyildirim@protonmail.com  
# Category: local  
# Vendor Homepage: https://www.comodo.com  
# Software Link: https://www.comodo.com/home/browsers-toolbars/browser.php  
# Version: Software Version <= 52.15.25.663  
# Tested on: Windows 7 x86/x64  
  
1. Description  
  
Comodo Dragon Browser Update Service (DragonUpdater) installs as a service with   
an unquoted service path running with SYSTEM privileges.  
This could potentially allow an authorized but non-privileged local  
user to execute arbitrary code with elevated privileges on the system.  
  
  
2. Proof of Concept  
  
C:\>sc qc DragonUpdater  
[SC] QueryServiceConfig SUCCESS  
SERVICE_NAME: DragonUpdater  
TYPE : 10 WIN32_OWN_PROCESS   
START_TYPE : 2 AUTO_START  
ERROR_CONTROL : 1 NORMAL  
BINARY_PATH_NAME : C:\Program Files (x86)\Comodo\Dragon\dragon_updater.exe  
LOAD_ORDER_GROUP :   
TAG : 0  
DISPLAY_NAME : COMODO Dragon Update Service  
DEPENDENCIES :   
SERVICE_START_NAME : LocalSystem   
  
  
3. Exploit:  
  
A successful attempt would require the local attacker must insert an executable file  
in the path of the service.  
Upon service restart or system reboot, the malicious code will be run with elevated privileges.  
  
  
Additional notes :  
  
Fixed in version 52.15.25.664  
https://forums.comodo.com/news-announcements-feedback-cd/comodo-dragon-v521525664-is-now-available-for-download-t116786.0.html  
  
Vulnerability Disclosure Timeline:  
=========================  
24/09/2016 - Contact With Vendor  
26/09/2016 - Vendor Response  
03/10/2016 - Release Fixed Version  
  
`