![]() Reporting Security VulnerabilitiesĬitrix welcomes input regarding the security of its products and considers any and all potential vulnerabilities seriously.Workspace app is the new name for Receiver. Contact details for Citrix Technical Support are available at. If you require technical assistance with this issue, please contact Citrix Technical Support. ![]() This article is also available from the Citrix Knowledge Center at. What Citrix Is DoingĬitrix is notifying customers and channel partners about this potential security issue. ![]() Use the following documentation to ensure proper configuration post fix installation: AcknowledgementsĬitrix thanks Ollie Whitehouse, Richard Warren and Martin Hill of NCC Group for working with us to protect Citrix customers. Single Sign-on (SSO) could stop working, after applying the security update, for browsers other than Internet Explorer unless explicitly configured. The new LTSR version is available from the following Citrix website location: The new Citrix Workspace app version is available from the following Citrix website location: Citrix strongly recommends that customers upgrade Citrix Workspace app to version 1904 or later and Receiver for Windows to LTSR 4.9 CU6 version. What Customers Should DoĪ new version of Citrix Workspace app and Receiver for Windows has been released. Note: Restarting Citrix Workspace app and Receiver is not sufficient to apply the changes, the operating system must be rebooted. Set InstantiatedSecurityPolicyEditabledefault to false (See CTX128792 for further details) Set all FileSecurityPermission to 0, which means No Access (See CTX133565 for further details) The following settings must be set for both x86 and 圆4 hives and the client system must be rebooted to take effect. In cases where the upgrade is not immediately possible applying a Client Selective Trust policy via GPO can be used to limit the exploitability of this vulnerability until the upgrade can be completed. Mitigating FactorsĬitrix strongly recommends that customers upgrade to the latest Citrix Workspace app for Windows and Receiver for Windows to address this vulnerability. This vulnerability does not affect Citrix Workspace app and Receiver on any other platforms. This vulnerability affects all versions of Citrix Workspace app for Windows and Receiver for Windows the fix is contained in Citrix Workspace app version 1904 or later and Receiver for Windows to LTSR 4.9 CU6 version. CVE-2019-11634: Remote Code Execution Vulnerability in Citrix Workspace app for Windows prior to version 1904 and Receiver for Windows to LTSR 4.9 CU6 version earlier than.This vulnerability has been assigned the following CVE number: However, if there is an issue with the 7.15 VDA, they should expect the fixes to be delivered via a 7.15 Cumulative Update VDA. In order to facilitate migration from CVAD 7.15 LTSR to CVAD LTSR, Citrix has marked the use of the latest 7.15 LTSR VDA as a compatible component of CVAD 1912 LTSR site. Citrix Virtual Apps and Desktops is a virtualization solution that give IT control of virtual machines, applications, licensing, and security, while providing access anywhere for any device. Important: The product lifecycle strategy for Current Releases (CR) and Long Term Service Releases (LTSR) is described in Lifecycle Milestones. ![]() The uninstall and install scripts may be used as noted in the upgrade guide for Citrix Workspace app for Windows ( CTX135933 ). Before use, IT administrators must customize the scripts to suit their environment. It is an optional download, provided on an as-is basis by Citrix to serve as an example. These settings can be configured during Citrix Receiver for Windows installation, or using the Group Policy Object administrative template, or the StoreFront Account.Ī vulnerability has been identified in Citrix Workspace app and Receiver for Windows that could result in local drive access preferences not being enforced allowing an attacker read/write access to the clients local drives which could enable code execution on the client device. Download Why can't I download this file? Download Citrix Workspace 1912 LtsrĬitrix Receiver Updates can be configured to deliver only updates marked for Long Term Support Releases (LTSR) or Current Releases (CR). ![]()
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