My XSRF Prevention code isn't working
Posted on
16th Feb 2014 07:03 pm by
admin
First of all, thanks for the generous help you guys have given me in the past on this forum.
Second, I apologize in advance if my code is hard to read, most of it was done in a rush.
Here goes:
login.php
Code: <?php
// create anti-csrf cookie value
$hash = sha1(time().rand().strlen(rand()));
$hash = substr($hash, 0, 8);
if (isset($_COOKIE['xsrf[0]'])) {
$i = 0;
while (isset($_COOKIE['xsrf['.$i.']'])) {
$i++;
}
setcookie('xsrf['.$i.']', $hash, 0, '/citizen/', '.ch4n.net');
} else {
setcookie('xsrf[0]', $hash, 0, '/citizen/', '.ch4n.net');
}
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Citizen - Login</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<link rel="stylesheet" href="default.css">
</head>
<body>
<div class="header"><?php include("menu.html"); ?></div>
<div class="body">
<?php if (!empty($_GET['errors'])): ?>
<ul>
<li><?php print implode("</li>nt<li>", explode(';', $_GET['errors'])); ?></li>
</ul>
<?php endif; ?>
<form name="login" action="login_process.php" method="POST">
<input type="hidden" name="xsrfi" value="<?php echo $i; ?>" />
<input type="hidden" name="xsrf" value="<?php echo $hash; ?>" />
<table cellpadding="1" cellspacing="1" id="login">
<tbody>
<tr class="username">
<th>Username</th>
<td><input type="text" id="username" name="username" maxlength="20" /><br /></td>
</tr>
<tr class="password">
<th>Password</th>
<td><input type="password" id="password" name="password" maxlength="20" /></td>
</tr>
</tbody>
</table>
<input type="submit" name="submit" value="Login!" />
</form>
</div>
</body>
</html>
login_process.php
Code: <?php
if ($_COOKIE['xsrf['.$_POST['xsrfi'].']'] !== $_POST['xsrf'] || !isset($_COOKIE['xsrf['.$_POST['xsrfi'].']'])):
$errors = "It appears you have been a victim of a browser attack! Please run a virus scan before continuing online activities.;".$_COOKIE['xsrf['.$_POST['xsrfi'].']'].";".$_POST['xsrfi'].";".$_POST['xsrf'];
setcookie('xsrf['.$_POST['xsrfi'].']', sha1($hash), time()-1, '/citizen/', '.ch4n.net');
header("Location: login.php?errors=$errors");
endif;
setcookie('xsrf', sha1($hash), time()-1, '/citizen/', '.ch4n.net');
require('authent.php');
$user = mysql_escape_string(htmlentities($_POST['username']));
$pass = mysql_escape_string(htmlentities($_POST['password']));
$passwordhash = hashPassword($pass);
if(table_exists("user_".$user, 's2zsl9rx_citizen')):
// Make a MySQL Connection
require('c2db.php');
mysql_select_db("s2zsl9rx_citizen") or die(mysql_error());
$result = mysql_query("SELECT * FROM user_$user WHERE type='001'")
or die(mysql_error());
$row = mysql_fetch_assoc($result);
if ($row['val'] == $passwordhash):
$value = $user.','.$row['val'].','.hashPassword(getip());
setcookie('citizeninfo', $value, time()+3600, '/citizen/', 'ch4n.net');
mysql_close();
header("Location: game.php");
else:
$errors = 'Username and/or password are incorrect'.$row['val'];
mysql_close();
header("Location: login.php?errors=$errors");
endif;
else:
$errors = 'Username and/or password are incorrect';
header("Location: login.php?errors=$errors");
endif;
?>
Any help at all would be very much appreciated
No comments posted yet
Your Answer:
Login to answer
265 
24 
Other forums
Undefined offset when using a flat file with pipe symbols
Hi, I've got a flat file/text file which I'm currently using as a member database for my site (not a
writing a screen scraper
Hello,
I'm writing a screen scraper application and want to be able to get absolute addresses
Does deleting the spmlog directory critical?
Hi Everyone,
Please, hope you could help me. We're having problems with the SAP backup. I
Connection Timeout
I'm using xmii 12.0
I'm calling a transaction as a web service from a windows application
Material Master Update through BAPI - Follow up material not updated
Hi Experts,
I am updating the material master through a custom transaction using the BAPI
What am I missing here? Help!
Hello all!. I can't seem to get this working right. Well - it renders right, but something is goin
captcha error
I have been trying to implement a captcha in php...
here is the code..
Code: (php) [Select
Checking if multidimensional array is empty?
I have a for with multiple test input fields. Specifically the user submits multiple names and ages
Error: SQL Syntax; Line 1
Code:
<?php require "global_settings.php"; ?>
<title&g
i need help with php header and footer
I have designed a header and footer for my site and they seem to be ok when they are running individ
