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Opera Browser Address Bar Spoofing Vulnerability
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Secunia Advisory:
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SA12028
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Release Date:
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2004-07-08
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Last Update:
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2004-07-20
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Popularity:
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38,780 views
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Critical:
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Moderately critical
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Impact:
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Spoofing
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Opera 5.x
Opera 6.x
Opera 7.x
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Description:
bitlance winter has discovered a vulnerability in the Opera browser, which potentially can be exploited by malicious people to conduct phishing attacks against a user.
The problem is that information in the address bar is changed before properly loading a page. This can e.g. be exploited via a specially crafted HTML document, which does the following:
1) Loads an HTML document with an "unOnload" event handler in the <BODY> tag, which is set to cause an infinite loop when the page is left.
2) Displays an arbitrary (potentially malicious) website in an inline frame ("<iframe>"), which at the same time sets an "onLoad" event handler to visit an arbitrary (potentially trusted) website.
Successful exploitation causes the browser to never load the new, and potentially trusted, website but still show its URI in the address bar.
The vulnerability has been confirmed in version 7.52 for Windows. Other versions and platforms may also be affected.
This is a variant of the following issues:
SA11901
SA11532
NOTE: A PoC (Proof of Concept) exploit is available.
Solution:
This vulnerability has been eliminated in version 7.53.
http://www.opera.com/download/
Provided and/or discovered by:
bitlance winter
Changelog:
2004-07-20: Updated solution.
Original Advisory:
http://www.opera.com/windows/changelogs/753/
Other References:
SA11901:
http://secunia.com/advisories/11901/
SA11532:
http://secunia.com/advisories/11532/
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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