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phpMyFAQ 2.9.0 - Persistent Cross-Site Scripting
[# Exploit Title: phpMyFAQ 2.9.0 Stored XSS
# Date: 09-06-2016
# Software Link: http://www.phpmyfaq.de/
# Exploit Author: Kacper Szurek
# Contact: http://twitter.com/KacperSzurek
# Website: http://security.szurek.pl/
# Category: webapps
1. Description
PHP `filter_input()` function with `FILTER_VALIDATE_URL` flag is used to validate url inside `savefaq` functionality.
But this function doesn’t protect against XSS.
http://security.szurek.pl/phpmyfaq-290-stored-xss.html
2. Proof of Concept
By default every user can propose faq entries.
When admin activate article using http://phpmyfaq/admin/?action=view url or records.defaultActivation option is enabled, XSS will be visible on entry page:
http://phpmyfaq/index.php?action=artikel&cat=%cat_id%&id=%article_id%&artlang=pl
For exploitation use folowing url inside Link for this FAQ field:
http://example.com/"><script>alert("xss")</script>
3. Solution:
Update to version 2.9.1
# 0day.today [2024-09-20] #