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Avant Browser Tabbed Browsing Vulnerabilities
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Secunia Advisory:
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SA12717
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Release Date:
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2004-10-20
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Last Update:
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2005-02-17
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Popularity:
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32,311 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: | Avant Browser 10.x
Avant Browser 9.x
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Description:
Secunia Research has discovered two vulnerabilities in Avant Browser, which can be exploited by malicious web sites to obtain sensitive information and spoof dialog boxes.
1) Inactive tabs can launch dialog boxes so they appear to be displayed by a web site in another tab. This can be exploited by a malicious web site to show a dialog box, which seems to originate from a trusted web site.
Successful exploitation would normally require that a user is tricked into opening a link from a malicious web site to a trusted web site in a new tab.
A test is available here:
http://secunia.com/multiple_browsers_dialog_box_spoofing_test/
2) Inactive tabs can gain focus from form fields on web sites in another tab. This can potentially be exploited to collect sensitive data entered in form fields on other web sites.
Successful exploitation would normally require that a user is tricked into opening a link from a malicious web site to a trusted web site in a new tab.
A test is available here:
http://secunia.com/multiple_browsers_form_field_focus_test/
The vulnerabilities have been confirmed in Avant Browser 9.02 build 101 and Avant Browser 10.0 build 029. Other versions may also be vulnerable.
Solution:
Update to version 10.0 Build 131.
http://www.avantbrowser.com/download.html
Provided and/or discovered by:
Jakob Balle, Secunia Research.
Changelog:
2005-02-17: Updated "Solution" section.
Original Advisory:
http://secunia.com/secunia_research/2004-10/
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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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