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
SESSION question
I am building an application , a directory for auctions.
For SEO i made a script which copies a p
Suggestions for Functional module
Hello experts,
I Have done B.Sc(Mathematics) and MCA & have learnt SAP/ABAP but do n
Checkbox info wont include in Mailto
Hey, im new to php.
Basically I have made a form to request which type of job(s) are needed, whic
error help - Dynamic Image
I've been working on making my site less cluttered in the directories and more secure lately. In an
PHP Function Page Advice
Hi All, I am quite new to PHP and Javascript but have written an Online Shop (Mainly for Fun and edu
Save data in input fields when they press "BACK BUTTON"
Hi, this is html form: And let's say they get a error "Please enter ur title must be more then
SAP Project Module
I have seen in the SAP Project Module,plan cost and budget are not equal and even difference is sign
foreach iterator
Hi Guys
Does the foreach loop have an inbuilt iterator ?
query based on 2 conditions
I want to select if the doc_type is either s OR f but this doesn't work:
Code: [Select]$query
Search in the PHP Files
have to search asterisk(*) in the php code of the php files .
In the html page one text box
