CVE-2018-6186

Citrix NetScaler VPX through NS12.0 53.13.nc allows an SSRF attack via the /rapi/readurl URI by an authenticated attacker who has a webapp account. The attacker can gain access to the nsroot account, and execute remote commands with root privileges...

Windows 10 April 2018 Update (v1803) – Citrix Known Issues

Microsoft releases software updates for Windows 10 twice a year through the Semi-Annual Channel. On April 30, 2018, Microsoft released its latest Semi-Annual Channel release for Windows 10 called 'April 2018 Update' v1803. This article is intended to capture known issues with Windows 10 v1803 tha...

Fall back from TCP to UDP fails / displays SSL Error when Disconnecting and Reconnecting session via NetScaler

If HDX Adaptive Transport Policy set to Preferred on DDC and when attempting to connect to an Application or Desktop using Citrix Receiver for Windows 4.10 or Citrix Receiver for Mac 12.8 or Citrix Receiver for iOS 7.5 and above, you may encounter below issues: Session will get disconnect if...

Error: "Cannot Process Provisioning File"

While running the StoreFront Services provisioning file for example, Receiverconfig.cr using Citrix Receiver 3.1, issues might be experienced. The following error message might appear: “Cannot process provisioning file”...

How to get the traces for Citrix Receiver for Windows (Store) 4.10

This article is intended for Citrix administrators and technical teams only. Non-admin users must contact their company's Help Desk/IT support team and can refer to CTX297149 for more information. This article describes how to get traces for Citrix Receiver for Windows Store 4.10 edition...

Citrix Netscaler Detection (SNMP)

SNMP based detection of Citrix Netscaler. SPDX-FileCopyrightText: 2018 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription scriptoid"1.3.6.1.4.1.25623.1.0.140666"...

Citrix NetScaler Detection (SSH Login)

SSH login-based detection of Citrix NetScaler. SPDX-FileCopyrightText: 2018 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Enlightened Data Transport Not working with Double Hop DMZ scenario

EDT requires policy on the XenDesktop to be enabled and DTLS on the NetScaler to be ON. Also, StoreFront needs to be minimum Version 3.8 and Citrix Receiver at 14.7. So all the requirements are met. At theXenDesktop Policy for "HDX Adaptive Transport" is set to "preferred", still connections fail...

Citrix Workspace App for Linux: How to trust a CA certificate?

This article is intended for Citrix administrators and technical teams only. Non-admin users must contact their company's Help Desk/IT support team and can refer to CTX297149 for more information. This article's objective is to describe the steps involved in trusting a CA certificate in Citrix...

Citrix StoreFront 3.9 Unable to Refresh

Upgrading StoreFront from 3.6 to 3.9 works fine and when we open the Citrix StoreFront gives an error message:"unable to refresh" with error "A PowerShell SDK execution error occurred with exception thrown at defaultDocument"...

Citrix XenServer Multiple Vulnerabilities (CTX231390) (Meltdown)(Spectre)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities. C Tenable Network Security, Inc. include'compat.inc'; if description scriptid105617; scriptversion"1.12";...

Director showing error "Network unreachable. Check configuration, authentication, or service availability"

While connecting to Citrix ADMMAS from Director customer is getting error "Network unreachable. Check configuration, authentication, or service availability. " For configuring the Director with Citrix ADMMAS follow the...

Citrix XenServer Multiple Security Updates

Important Note Due to concerns about the robustness of some of the Intel microcode updates included in the earlier hotfixes for these issues XS71ECU1009, XS72E013 and XS73E001, Citrix has superseded these hotfixes with new hotfixes listed below. Customers are strongly recommended to apply these n...

Security Bulletin: NVIDIA Driver Security Updates for CPU Speculative Side Channel Vulnerabilities

NVIDIA driver response to CPU speculative side channel vulnerabilities - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754 Bulletin Summary NVIDIA is providing an initial security update to mitigate aspects of Google Project Zero’s January 3, 2018 publication of novel information disclosure attacks tha...

Citrix App Layering - User Layer Error "We were unable to attach your User Layer"

When end users log into a virtual machine with Elastic layering enabled, they see the error "We were unable to attach your User Layer. Any changes you make to application settings or data will not be saved. Be sure to save any work to a shared network location." Details: "Access to the path...

Receiver 4.10: Grey Screen On Published Desktops After Upgrading To Receiver 4.10

This article is intended for Citrix administrators and technical teams only.Non-admin users must contact their company’s Help Desk/IT support team and can refer toCTX297149for more information After upgrading Receiver from 4.9 to 4.10, some clients cannot access published desktops and apps. On...

Citrix SD-WAN Path State Sensitivity Control Overview

Bad Loss Sensitive – Select a setting from the drop-down menu. The options are: Enable– Default If enabled, paths will be marked BAD due to loss, and will incur a path scoring penalty. Disable – Disabling Bad Loss Sensitive can be useful when the loss of bandwidth is intolerable. Custom – Select...

Connection failures due to SSL certificate errors with Citrix Workspace app for Chrome / Citrix Receiver for Chrome

Connection to StoreFront/VDA will fail and may show cannot connect to server error or some SSL Certificate error in console logs. One of the reason could be invalid SSL certificate. Applicable Products: Citrix Receiver for HTML5, Citrix Receiver for Chrome, Citrix Workspace app for Chrome, Citrix...

SDWAN 4000 SE- VWAN service is disabled automatically on SDWAN

MCN not working properly as the Virtual WAN Service got disabled itself. Dashboard showing the following error message: Error: Disabled by dpdkdaemon due to hardware initialization failure 4 times. The Citrix Virtual WAN Service was disabled...

Blocking Windows Update from going to the next Windows 10 Feature Update (for example 1703 or 1709)

Citrix App layering, and probably other Citrix products, may not yet support the very latest version of Windows 10. For instance, Windows 10 1703 Creators Edition was not supported in App Layering until version 4.8. Unfortunately, "Feature Updates" are hard to block, because the Windows Update UI...