Citrix Workspace app for HTML5 Security Bulletin CVE-2024-6148 and CVE-2024-6149

Description of Problem

Two vulnerabilities have been discovered that impact the Citrix Workspace app for HTML5. Refer to below for further details:

Affected Versions

The vulnerabilities affect the following supported versions of the Citrix Workspace app for HTML5.

• Citrix Workspace app for HTML5 before 2404.1

This bulletin only applies to customer-managed Citrix Workspace app for HTML5. Customers using Citrix-managed cloud services do not need to take any action.

Summary

Citrix Workspace app for HTML5 contains the vulnerability mentioned below

CVE ID	Description	Pre-requisites	CWE	CVSS
CVE-2024-6148	Bypass of GACS Policy Configuration settings	Global App Configuration service (GACS) configured environment	CWE-276: Incorrect Default Permissions	CVSS v4.0 Base Score: 5.3

(CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N)
CVE-2024-6149| Redirection of users to a vulnerable URL| Authenticated access to the store where the capability to launch the HTML5 session is enabled| CWE-601: URL Redirection to Untrusted Site (‘Open Redirect’)| CVSS v4.0 Base Score: 4.8

(CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N)

What Customers Should Do

Citrix strongly recommends that customers upgrade their Citrix Workspace app for HTML5 to the version containing the fixes as soon as possible.

Citrix Workspace app for HTML5 versions that contain the fixes are:

• Citrix Workspace app for HTML5 2404.1 and later versions

Customers can upgrade vulnerable version of Citrix Workspace app for HTML5 on StoreFront CR or LTSR Layouts by downloading Citrix Workspace app for HTML5 2404.1 and later versions from https://www.citrix.com/downloads/workspace-app/html5/workspace-app-for-html5-latest.htm and following the instructions mentioned at <https://docs.citrix.com/en-us/citrix-workspace-app-for-html5/deploy.html#to-upgrade-citrix-workspace-app-for-html5-on-storefront&gt;’

Acknowledgments

Cloud Software Group thanks Matthias Zöllner of Cyvisory and Mauro Dini for working with us to protect Cloud Software Group customers.

What Citrix is Doing

Citrix is notifying customers and channel partners about this potential security issue through the publication of this security bulletin on the Citrix Knowledge Center at <https://support.citrix.com/securitybulletins&gt;.

Obtaining Support on This Issue

If you require technical assistance with this issue, please contact Citrix Technical Support. Contact details for Citrix Technical Support are available at <https://www.citrix.com/support/open-a-support-case&gt;.

Subscribe to Receive Alerts

Citrix strongly recommends that all customers subscribe to receive alerts when a Citrix security bulletin is created or modified at <https://support.citrix.com/user/alerts&gt;.

Reporting Security Vulnerabilities to Citrix

Citrix welcomes input regarding the security of its products and considers any and all potential vulnerabilities seriously. For details on our vulnerability response process and guidance on how to report security-related issues to Citrix, please see the following webpage: <https://www.citrix.com/about/trust-center/vulnerability-process.html&gt;.

Disclaimer

The information on this page is being provided to you on an “AS IS” and “AS-AVAILABLE” basis. The issues described on this page may or may not impact your system(s). Cloud Software Group, Inc. and its subsidiaries (collectively, “Cloud SG”) make no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. BY ACCESSING THIS PAGE, YOU ACKNOWLEDGE THAT CLOUD SG SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. Cloud SG reserves the right to change or update the information on this page at any time. We accordingly recommend that you always view the latest version of this page. The information contained herein is being provided to you under the terms of your applicable customer agreement with Cloud SG, and may be used only for the purposes contemplated by such agreement. If you do not have such an agreement with Cloud SG, this information is provided under the cloud.com Terms of Use, and may be used only for the purposes contemplated by such Terms of Use.

Changelog

2024-07-09	Initial Publication