Windows Virtual Delivery Agent for CVAD and Citrix DaaS Security Bulletin CVE-2024-6151

Windows Virtual Delivery Agent for CVAD and Citrix DaaS Security Bulletin CVE-2024-6151

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Article ID: CTX678035

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Updated On:

Description

Description of Problem

A vulnerability has been identified that impacts Virtual Delivery Agent for Windows used by Citrix Virtual Apps and Desktops and Citrix DaaS. Refer to below for further details: 

Affected Versions

The vulnerability affects the following supported versions of Windows Virtual Delivery Agent: 

Current Release (CR)

  • Citrix Virtual Apps and Desktops versions before 2402 

Long Term Service Release (LTSR)

  • Citrix Virtual Apps and Desktops 1912 LTSR before CU9
  • Citrix Virtual Apps and Desktops 2203 LTSR before CU5 

Summary

Windows Virtual Delivery Agent contains the vulnerability mentioned below 

CVE ID          DescriptionPre-requisites    CWECVSS
CVE-2024-6151Local Privilege escalation allows a low-privileged user to gain SYSTEM privilegesLocal access to the target systemCWE-269: Improper Privilege Management

CVSS v4.0 Base Score: 8.5

(CVS:4.0/AV:L/AV:L/AT:N/PR:L/UI:N/VCH/VI:H/VA:H/SC:N/S:N/S:N) 

What Customers Should Do

Citrix strongly recommends that customers upgrade their Windows Virtual Delivery Agent to versions that contain the fixes as soon as possible.  

Windows Virtual Delivery Agent versions that contain the fixes are: 

Current Release (CR)

  • Citrix Virtual Apps and Desktops 2402 and later versions 

Long Term Service Release (LTSR)

  • Citrix Virtual Apps and Desktops 1912 LTSR CU9 and later cumulative updates
  • Citrix Virtual Apps and Desktops 2203 LTSR CU5 and later cumulative updates
  • Citrix Virtual Apps and Desktops 2402 LTSR

Additional Information

Citrix Virtual Apps and Desktops and Citrix DaaS customers may use Citrix provisioning services or Machine creation services technologies, if applicable, to update their non persistent Virtual Delivery Agents.

Citrix DaaS customers may use VDA Upgrade Service (VUS) to update their Windows persistent Virtual Delivery Agents for Remote PC Access, HDX Plus for Windows 365, and any other persistent or provisioned and dedicated catalogs. Customers are recommended to review the VUS Prerequisites to determine if they can use the VDA Upgrade Service.

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.

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.

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.

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.

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

2024-07-09Initial Publication
2024-07-15Platform migration
2024-07-16Added 'Additional Information' section

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