Comodo Chromodo Browser Unquoted Service Path Privilege Escalation

vendor:

Chromodo Browser

by:

Yunus YILDIRIM

7,2

CVSS

HIGH

Privilege Escalation

269

CWE

Product Name: Chromodo Browser

Affected Version From: Software Version <= 52.15.25.664

Affected Version To: Software Version <= 52.15.25.664

Patch Exists: YES

Related CWE: N/A

CPE: a:comodo:chromodo_browser

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows 7 x86/x64

2016

Comodo Chromodo Browser Unquoted Service Path Privilege Escalation

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.

Mitigation:

Update to the latest version of Comodo Chromodo Browser (version 52.15.25.665)

Source

Exploit-DB raw data:

# 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: yunusyildirim@protonmail.com
# 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