diff options
| author | canyonknight <canyonknight@gmail.com> | 2012-06-23 14:40:11 -0400 |
|---|---|---|
| committer | Lukas Fleischer <archlinux@cryptocrack.de> | 2012-06-24 10:59:23 +0200 |
| commit | 2c93f0a98f0f6380fd07ea17fd16afa2c6e4925b (patch) | |
| tree | dc5fd78a8cb46cd1475b45eeaa6544fbdeb23280 /web/template/pkg_comment_form.php | |
| parent | bfb25807c49d3f35cdce91947a442455e1940392 (diff) | |
Implement token system to fix CSRF vulnerabilities
Specially crafted pages can force authenticated users to unknowingly perform
actions on the AUR website despite being on an attacker's website. This
cross-site request forgery (CSRF) vulnerability applies to all POST data on
the AUR.
Implement a token system using a double submit cookie. Have a hidden form
value on every page containing POST forms. Use the newly added check_token() to
verify the token sent via POST matches the "AURSID" cookie value. Random
nature of the token limits potential for CSRF.
Signed-off-by: canyonknight <canyonknight@gmail.com>
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Diffstat (limited to 'web/template/pkg_comment_form.php')
| -rw-r--r-- | web/template/pkg_comment_form.php | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/web/template/pkg_comment_form.php b/web/template/pkg_comment_form.php index d3b602c..6081643 100644 --- a/web/template/pkg_comment_form.php +++ b/web/template/pkg_comment_form.php @@ -1,6 +1,6 @@ <?php # Add a comment to this package -if (isset($_REQUEST['comment'])) { +if (isset($_REQUEST['comment']) && check_token()) { # Insert the comment $dbh = db_connect(); @@ -53,13 +53,14 @@ if (isset($_REQUEST['comment'])) { <form action='<?php echo $_SERVER['REQUEST_URI'] ?>' method='post'> <div style="padding: 1%"> <?php -if (isset($_REQUEST['comment'])) { +if (isset($_REQUEST['comment']) && check_token()) { echo '<b>' . __('Comment has been added.') . '</b>'; } ?> <input type='hidden' name='ID' value="<?php echo intval($_REQUEST['ID']) ?>" /> <?php echo __('Enter your comment below.') ?><br /> <textarea name='comment' cols='80' rows='10' style="width: 100%"></textarea><br /> + <input type='hidden' name='token' value='<?php echo htmlspecialchars($_COOKIE['AURSID']) ?>' /> <input type='submit' value="<?php echo __("Submit") ?>" /> <input type='reset' value="<?php echo __("Reset") ?>" /> </div> |