Description of Problem

A vulnerability has been identified in Citrix Cloud Connector that may result in sensitive information being stored in the Citrix Cloud Connector installation log files which, if exploited, could allow access to a customer’s Citrix Cloud environment.

CVE ID	Description	Vulnerability Type	Pre-conditions
CVE-2021-22914	Sensitive information stored in installation logs	CWE-922: Insecure Storage of Sensitive Information	Citrix Cloud connector must have been installed by passing parameters to the command line installer.

This issue affects all versions of Citrix Cloud Connector which were installed by passing secure client parameters for installation via the command line. The issue does not affect Citrix Cloud Connector if it was installed using the interactive installer or where a parameter file was used with the command-line installer.

Mitigating Factors

As documented at https://docs.citrix.com/en-us/citrix-cloud/citrix-cloud-resource-locations/citrix-cloud-connector/installation.html, installation log files are saved to the host running Citrix Cloud Connector during installation. If customers have followed Citrix recommendation to use a dedicated machine to run Citrix Cloud Connector, access to the installation logs may therefore be restricted.

What Customers Should Do

Impacted customers are recommended to delete any Secure Clients from their Citrix Cloud portal which have previously been used for command line installation. Customers are also recommended to review the installation documentation at https://docs.citrix.com/en-us/citrix-cloud/citrix-cloud-resource-locations/citrix-cloud-connector/installation.html for any future installation of Citrix Cloud Connector as this information has been recently updated.

Acknowledgements

Citrix would like to thank Patrick van den Born of van den Born IT Consultancy for working with us to protect Citrix 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.

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

This document is provided on an "as is" basis and does not imply any kind of guarantee or warranty, including the warranties of merchantability or fitness for a particular use. Your use of the information on the document is at your own risk. Citrix reserves the right to change or update this document at any time. Customers are therefore recommended to always view the latest version of this document directly from the Citrix Knowledge Center.

Changelog

Date	Change
2021-06-08	Initial Publication

Citrix Cloud Connector Security Update