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

Adobe Magento Commerce Cross Site Scripting

Adobe Magento Commerce Cross Site Scripting
Posted Feb 10, 2021
Authored by Natsasit Jirathammanuwat | Site sec-consult.com

Adobe Magento Commerce versions prior to 2.4.2 suffer from a cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2021-21029
SHA-256 | 901c1af1587ebc9a26b154995ec271cad02931488eb9cef602e6b0bd29fa4817

Adobe Magento Commerce Cross Site Scripting

Change Mirror Download
SEC Consult Vulnerability Lab Security Advisory < 20210210-0 >
=======================================================================
title: Reflected Cross-Site Scripting (XSS)
product: Adobe Magento Commerce
vulnerable version: < 2.4.2
fixed version: 2.4.2
CVE number: CVE-2021-21029
impact: Medium
homepage: https://magento.com/
found: 2020-06-29
by: Natsasit Jirathammanuwat (Office Thailand)
SEC Consult Vulnerability Lab

An integrated part of SEC Consult, an Atos company
Europe | Asia | North America

https://www.sec-consult.com

=======================================================================

Vendor description:
-------------------
"Magento Commerce, offers a one-of-a-kind eCommerce solution with
enterprise power, unlimited scalability, and open-source flexibility
for B2C and B2B experiences. Magento allows you to create unique,
full-lifecycle customer experiences proven to generate more sales.
No matter what your company’s size or goals — omnichannel, global
expansion, mobile — Magento delivers everything you need for growth
in an increasingly competitive market."

Source: https://magento.com/products


Business recommendation:
------------------------
Update to the latest version of Adobe Magento Commerce.

An in-depth security analysis performed by security professionals is highly
advised, as the software may be affected from further security issues.


Vulnerability overview/description:
-----------------------------------
1) Reflected Cross-Site Scripting (XSS) (CVE-2021-21029)
This vulnerability allows an unauthenticated user to inject malicious
client side script into the URL and send to the victim. The browser may
redirect the victim (e.g. admin) to the frontend page when visiting the URL,
the script will be executed after the victim visits the admin panel again.

This vulnerability has two different scenarios:
1. Security configuration "Add Secret Key to URLs" is enabled (default).
- Admin panel path is required.
- Key value (secret hash) in the URL is required.
- User interaction is required (navigate back to the admin panel).

2. Security configuration "Add Secret Key to URLs" is disabled.
- Admin panel path is required.
- User interaction is required (navigate back to the admin panel).


Proof of concept:
-----------------
1) Reflected Cross-Site Scripting (XSS) (CVE-2021-21029)
The "file" parameter is vulnerable to reflected cross-site scripting
vulnerability. By sending the XSS payload in the Base64 encoded format
in the URL as follows:

1. Security configuration "Add Secret Key to URLs" is enabled (default).
URL format:
https://{baseURL}/{adminPath}/admin/system_design_theme/downloadCss/theme_id/{themeID}/file/{base64encoded_xss_payload}/key/{secret_hash}
Example URL:
https://127.0.0.1/index.php/admin/admin/system_design_theme/downloadCss/theme_id/1/file/PHNjcmlwdD5hbGVydCgnWFNTIGJ5IFNFQyBDb25zdWx0Jyk8L3NjcmlwdD4%3D/key/0f5d20e8559bb6f45e4840ceb6231870f3a8fe122698b37c32ceabbb33595813

2. Security configuration "Add Secret Key to URLs" is disabled.
URL format:
https://{baseURL}/{adminPath}/admin/system_design_theme/downloadCss/theme_id/{themeID}/file/{base64encoded_xss_payload}/
Example URL:
https://127.0.0.1/index.php/admin/admin/system_design_theme/downloadCss/theme_id/1/file/PHNjcmlwdD5hbGVydCgnWFNTIGJ5IFNFQyBDb25zdWx0Jyk8L3NjcmlwdD4%3D/


Vulnerable / tested versions:
-----------------------------
Magento2 version 2.3.5-p1 has been tested, which was the latest version
available at the time of the test. Previous versions may also be affected.
Later versions until the patched version v2.4.2 are affected as well.


Vendor contact timeline:
------------------------
2020-07-09 | Contacting vendor through https://hackerone.com/magento.
2020-07-09 | The report is flagged as out-of-scope in hackerone.
2020-08-13 | Contacting vendor and requesting encryption key through psirt@adobe.com.
2020-08-13 | Vendor provides PGP encryption key.
2020-08-14 | Sending encrypted advisory to the vendor.
2020-09-09 | Asking vendor for a status update.
2020-09-10 | Vendor is still investigating the issue.
2020-09-28 | Asking vendor for a status update.
2020-10-02 | Vendor is still investigating the issue.
2020-11-24 | Asking vendor for a status update.
2020-11-24 | Vendor is planing to fix the issue in next release.
2021-02-02 | Asking vendor for a status update and the release date.
2021-02-02 | Vendor is planing to release a security update on February 9th.
2021-02-10 | Coordinated release of security advisory.


Solution:
---------
Update to the latest available version v2.4.2 of Magento2 from the vendor's download
page:
https://magento.com/tech-resources/download

Vendor security advisory:
https://helpx.adobe.com/security/products/magento/apsb21-08.html


Workaround:
-----------
None


Advisory URL:
-------------
https://sec-consult.com/vulnerability-lab/


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

SEC Consult Vulnerability Lab

SEC Consult, an Atos company
Europe | Asia | North America

About SEC Consult Vulnerability Lab
The SEC Consult Vulnerability Lab is an integrated part of SEC Consult, an
Atos company. It ensures the continued knowledge gain of SEC Consult in the
field of network and application security to stay ahead of the attacker. The
SEC Consult Vulnerability Lab supports high-quality penetration testing and
the evaluation of new offensive and defensive technologies for our customers.
Hence our customers obtain the most current information about vulnerabilities
and valid recommendation about the risk profile of new technologies.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Interested to work with the experts of SEC Consult?
Send us your application https://sec-consult.com/career/

Interested in improving your cyber security with the experts of SEC Consult?
Contact our local offices https://sec-consult.com/contact/
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Mail: research at sec-consult dot com
Web: https://www.sec-consult.com
Blog: http://blog.sec-consult.com
Twitter: https://twitter.com/sec_consult

EOF N. Jirathammanuwat / @2021

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
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 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