Y-R-S CMS 2015Q4 - (ID) SQL Injection Web Vulnerability

Document Title:
===============
Y-R-S CMS 2015Q4 - (ID) SQL Injection Web Vulnerability 


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1644


Release Date:
=============
2015-11-17


Vulnerability Laboratory ID (VL-ID):
====================================
1644


Common Vulnerability Scoring System:
====================================
8.2


Product & Service Introduction:
===============================
Ai.ar.as is a young and dynamic company established in 2007 by professionals in the field of computers, in order to provide a service in computers and 
Hantrnt, and is a company specializing in the design and construction of web sites and software.

(Copy of the Vendor Homepage: http://www.y-r-s.net/ )


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a remote sql injection web vulnerability in the official Y-R-S Content Management System 2015Q4.


Vulnerability Disclosure Timeline:
==================================
2015-11-17: Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================
Y-R-S
Product: Y-R-S - Content Management System (CMS) 2015 Q4


Exploitation Technique:
=======================
Remote


Severity Level:
===============
High


Technical Details & Description:
================================
A remote sql injection web vulnerability has been discovered in the official Y-R-S Content Management System 2015-Q4.
The vulnerability allows remote attackers to execute own sql commands to compromise the web-applicaation or connected dbms.

The vulnerability is located in the `id` value of the `page.php` file. Remote attackers are able to execute own sql commands by 
manipulation of the GET method request with the vulnerable id parameter. The request method to inject the sql command is GET and 
the issue is located on the application-side of the `./yrs/` online-service path. The sql vulnerability allows remote attackers to 
compromise the database management system that is connected to the web-application.

The security risk of the sql injection vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 8.2.
Exploitation of the remote sql injection web vulnerability requires no user interaction or privileged web-application user account.
Successful exploitation of the remote sql injection results in database management system, web-server and web-application compromise.

Request Method(s):
						[+] GET

Vulnerable Module(s):
						[+] ./yrs/

Vulnerable File(s):
						[+] page.php

Vulnerable Parameter(s):
						[+] id


Proof of Concept (PoC):
=======================
The sql injection web vulnerability can be exploited by remote attackers without privileged web-application user account and without user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.

Google Dork(s):
site:.il title="yrs" 
Go to this website and choose products [ http://www.y-r-s.net ] 

PoC:
http://localhost/[path]/yrs/?id=[SQL-Injection Vulnerability!] 
http://localhost/[path]/page.php?id=[SQL-Injection Vulnerability!] 
...   ...
http://localhost/[path]/page.php?id=1456+and+6=6-- >> True 
http://localhost/[path]/page.php?id=1456+and+6=7-- >> False 


Reference(s):
http://sk-engpro.com/page.php?id=1' 
http://knisetna.com/page.php?id=1456' 
http://hakira.co.il/index.php?parent=321' 


Solution - Fix & Patch:
=======================
The vulnerability can be patched by usage of a prepared statement in the entry request of the id value. Restrict all the url parameter requests and 
disallow usage of special chars to prevent sql or script code injection attacks. Escape or filter the entry to valid the context finally.



Security Risk:
==============
The security risk of the remote sql injection web vulnerability in the web application is estimated as high. (CVSS 8.2)


Credits & Authors:
==================
Sajjad Sotoudeh - (http://www.y-r-s.net & www.white-hg.com) [http://www.vulnerability-lab.com/show.php?user=Sajjad%20Sotoudeh]
We are: KamraN HellisH - Dr.RooT - Dr.Repermind - Milad_Inj3ct0r - 4li-3ndG & All white-hg members


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=========================
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