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Comodo Chromodo Browser Privilege Escalation

🗓️ 06 Oct 2016 00:00:00Reported by Yunus YILDIRIMType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 23 Views

Comodo Chromodo Browser Privilege Escalation allows arbitrary code execution with elevated privileges via unquoted service pat

Code
`# Exploit Title: Comodo Chromodo Browser Unquoted Service Path Privilege Escalation  
# Date: 03/10/2016  
# Author: Yunus YILDIRIM (@Th3GundY)  
# Team: CT-Zer0 (@CRYPTTECH)  
# Website: http://yildirimyunus.com  
# Contact: [email protected]  
# Category: local  
# Vendor Homepage: https://www.comodo.com  
# Software Link: https://www.comodo.com/home/browsers-toolbars/chromodo-private-internet-browser.php  
# Version: Software Version <= 52.15.25.664  
# Tested on: Windows 7 x86/x64  
  
1. Description  
  
Comodo Chromodo Browser Update Service (ChromodoUpdater) 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 ChromodoUpdater  
[SC] QueryServiceConfig SUCCESS  
SERVICE_NAME: ChromodoUpdater  
TYPE : 10 WIN32_OWN_PROCESS  
START_TYPE : 2 AUTO_START  
ERROR_CONTROL : 1 NORMAL  
BINARY_PATH_NAME : C:\Program Files\Comodo\Chromodo\chromodo_updater.exe  
LOAD_ORDER_GROUP :  
TAG : 0  
DISPLAY_NAME : COMODO Chromodo 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 52.15.25.665  
https://forums.comodo.com/news-announcements-feedback-cd/chromodo-v521525665-is-now-available-for-download-t116787.0.html  
  
Vulnerability Disclosure Timeline:  
=========================  
03/10/2016 - Contact With Vendor  
03/10/2016 - Vendor Response  
05/10/2016 - Release Fixed Version  
  
`

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