exploit the possibilities

WordPress Canvas - Shortcodes 1.92 Cross Site Scripting

WordPress Canvas - Shortcodes 1.92 Cross Site Scripting
Posted Nov 20, 2016
Authored by Yorick Koster, Securify B.V.

WordPress Canvas - Shortcodes plugin version 1.92 suffers from a persistent cross site scripting vulnerability.

tags | exploit, xss
MD5 | ac57cb7f2f79a37fd85211132454a1b0

WordPress Canvas - Shortcodes 1.92 Cross Site Scripting

Change Mirror Download
------------------------------------------------------------------------
Stored Cross-Site Scripting in WP Canvas - Shortcodes WordPress Plugin
------------------------------------------------------------------------
Yorick Koster, July 2016

------------------------------------------------------------------------
Abstract
------------------------------------------------------------------------
A Cross-Site Scripting vulnerability was found in the WP Canvas -
Shortcodes WordPress Plugin. This issue allows an attacker to perform a
wide variety of actions, such as stealing Administrators' session
tokens, or performing arbitrary actions on their behalf. This issue can
be exploited by authenticated users with the Contributor or higher role.

------------------------------------------------------------------------
OVE ID
------------------------------------------------------------------------
OVE-20160724-0031

------------------------------------------------------------------------
Tested versions
------------------------------------------------------------------------
This issue was successfully tested on WP Canvas - Shortcodes WordPress
Plugin version 1.92.

------------------------------------------------------------------------
Fix
------------------------------------------------------------------------
This issue has been addressed in WP Canvas - Shortcodes WordPress Plugin
version 2.07.

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

This issue exists due to the lack of validation on the url attributed of the wc_button shortcode. A Contributor or higher can create a button with a specially crafted Javascript payload. When a (logged) on user clicks on this button, the payload will be executed. This bypasses the unfiltered_html privilege of WordPress, which is normally only assigned to Editors & Administrators.

Proof of concept

[wc_button type="primary" url="javascript:alert(1)" title="Visit Site" target="self" position="float"]Sample Content[/wc_button]


------------------------------------------------------------------------
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:

July 2020

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

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close