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phpBB Cross Site Scripting Vulnerability
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Secunia Advisory:
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SA9567
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Release Date:
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2003-08-19
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Popularity:
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8,771 views
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Critical:
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Less critical
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Impact:
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Cross Site Scripting
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Where:
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From remote
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Solution Status:
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Vendor Workaround
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| Software: | phpBB 2.x
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Description:
A vulnerability has been identified in phpBB allowing malicious people to conduct Cross Site Scirpting attacks against users.
The problem exists if certain HTML tags like "<A>" is allowed in postings. This allows malicious people to insert javascript event handlers, which essentially can do the same as a script in a "<SCRIPT>" tag.
Example:
<a href="javascript:evil_function();">My_Site</a>
Solution:
The phpBB developers suggest some possible configuration changes:
http://www.phpbb.com/phpBB/viewtopic.php?t=127525
Secunia recommends that you disable HTML tags in postings.
Provided and/or discovered by:
Marvin Massih
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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.
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