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CSRF protection

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This commit is contained in:
andryyy
2017-05-15 11:37:12 +02:00
parent fccdabb113
commit e91c6916ab
6 changed files with 37 additions and 23 deletions
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51
data/web/inc/sessions.inc.php
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@@ -15,21 +15,8 @@ else {
}
session_set_cookie_params($GLOBALS['SESSION_LIFETIME'], '/', $_SERVER['SERVER_NAME'], $IS_HTTPS, true);
session_start();
// Handle logouts
if (isset($_POST["logout"])) {
if (isset($_SESSION["dual-login"])) {
$_SESSION["mailcow_cc_username"] = $_SESSION["dual-login"]["username"];
$_SESSION["mailcow_cc_role"] = $_SESSION["dual-login"]["role"];
unset($_SESSION["dual-login"]);
}
else {
session_regenerate_id(true);
session_unset();
session_destroy();
session_write_close();
header("Location: /");
}
if (!isset($_SESSION['CSRF']['TOKEN'])) {
$_SESSION['CSRF']['TOKEN'] = bin2hex(random_bytes(32));
}
// Set session IP and UA
@@ -51,12 +38,36 @@ function session_check() {
if ($_SESSION['SESS_REMOTE_UA'] != $_SERVER['HTTP_USER_AGENT']) {
return false;
}
if (!empty($_POST)) {
if ($_SESSION['CSRF']['TOKEN'] != $_POST['csrf_token']) {
return false;
}
$_SESSION['CSRF']['TOKEN'] = bin2hex(random_bytes(32));
$_SESSION['CSRF']['TIME'] = time();
}
return true;
}
if (isset($_SESSION['mailcow_cc_role']) && session_check() === false) {
session_regenerate_id(true);
session_unset();
session_destroy();
session_write_close();
header("Location: /");
$_SESSION['return'] = array(
'type' => 'warning',
'msg' => 'Form token invalid or timed out'
);
$_POST = array();
}
// Handle logouts
if (isset($_POST["logout"])) {
if (isset($_SESSION["dual-login"])) {
$_SESSION["mailcow_cc_username"] = $_SESSION["dual-login"]["username"];
$_SESSION["mailcow_cc_role"] = $_SESSION["dual-login"]["role"];
unset($_SESSION["dual-login"]);
}
else {
session_regenerate_id(true);
session_unset();
session_destroy();
session_write_close();
header("Location: /");
}
}