WeBid 1.0.6 – SQL Injection
# Exploit Title: WeBid 1.0.6 SQL Injection Vulnerability # Google Dork: "Powered by WeBid" # Date: 1/9/13 # Exploit Author: Life Wasted # Vendor Homepage: http://www.webidsupport.com/ # Version: Tested on 1.0.6, but could affect other version # Tested On: Linux, Windows Vulnerable Code: Line 53 of the validate.php file Lines 198 through 202 and 234 in the includes/functions_fees.php file Proof of Concept: validate.php?toocheckout=asdf calls the toocheckout_validate() function toocheckout_validate() takes unsanitized post input from 2 different parameters (total and cart_order_id) toocheckout_validate() calls callback_process() if the post parameter credit_card_processed is equal to 'Y' The unsanitized parameters are using in an UPDATE query: $query = "UPDATE " . $DBPrefix . "users SET balance = balance + " . $payment_amount . $addquery . " WHERE id = " . $custom_id; This allows an attacker to retrieve data using a time-based blind injection technique or by updating a pre-existing value to the output of an embedded query. For example, the attacker could send the following post data to extract the name of the current database. http://site.com/validate.php?toocheckout=asdf POST DATA: cart_order_id=*Attackers UserID*WEBID1&credit_card_processed=Y&total=1, name=(SELECT database()) The resulting query would be: UPDATE users SET balance = balance + 1, name=(SELECT database()) WHERE id = *Attackers User ID* Then the attacker could sign in to their account and view the requested data by going to the edit_data.php page |