Shrew Soft VPN Client 2.2.2 - 'iked' Unquoted Service Path

vendor:

VPN Client

by:

D.Goedecke

7.2

CVSS

HIGH

Unquoted Service Path

426

CWE

Product Name: VPN Client

Affected Version From: 2.2.2

Affected Version To: 2.2.2

Patch Exists: NO

Related CWE: N/A

CPE: a:shrewsoft:vpn_client:2.2.2

Metasploit: N/A

Other Scripts: N/A

Platforms Tested: Windows 10 64bit

2019

Shrew Soft VPN Client 2.2.2 – ‘iked’ Unquoted Service Path

A successful attempt would require the local user to be able to insert their code in the system root path undetected by the OS or other security applications where it could potentially be executed during application startup or reboot. If successful, the local user's code would execute with the elevated privileges of the appliaction.

Mitigation:

Ensure that all services are installed with a fully qualified path name and that the path is enclosed in quotes.

Source

Exploit-DB raw data:

# Exploit Title: Shrew Soft VPN Client 2.2.2 - 'iked' Unquoted Service Path
# Date: 2019-11-14
# Exploit Author: D.Goedecke
# Vendor Homepage: www.shrew.net
# Software Link: https://www.shrew.net/download/vpn/vpn-client-2.2.2-release.exe
# Version: 2.2.2
# Tested on: Windows 10 64bit


C:\Users\user>wmic service get name, displayname, pathname, startmode | findstr /i "auto" | findstr /i /v "C:\Windows\\" | findstr /i /v """
ShrewSoft IKE Daemon iked                                        C:\Program Files\ShrewSoft\VPN Client\iked.exe -service Auto
ShrewSoft IPSEC Daemon ipsecd                                    C:\Program Files\ShrewSoft\VPN Client\ipsecd.exe -service Auto 


C:\Users\user>sc qc iked
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: iked
        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files\ShrewSoft\VPN Client\iked.exe -service
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : ShrewSoft IKE Daemon
        DEPENDENCIES       :
        SERVICE_START_NAME : LocalSystem

C:\Users\user>sc qc ipsecd
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: ipsecd
        TYPE               : 10  WIN32_OWN_PROCESS
        START_TYPE         : 2   AUTO_START
        ERROR_CONTROL      : 1   NORMAL
        BINARY_PATH_NAME   : C:\Program Files\ShrewSoft\VPN Client\ipsecd.exe -service
        LOAD_ORDER_GROUP   :
        TAG                : 0
        DISPLAY_NAME       : ShrewSoft IPSEC Daemon
        DEPENDENCIES       :
        SERVICE_START_NAME : LocalSystem 



#Exploit:
============
A successful attempt would require the local user to be able to insert
their code in the system root path undetected by the OS or other
security applications where it could potentially be executed during
application startup or reboot. If successful, the local user's code
would execute with the elevated privileges of the application.