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Description of Problem
Multiple vulnerabilities have been discovered in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway).
The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the vulnerabilities:
NetScaler ADC and NetScaler Gateway 13.1 before 13.1-49.13
NetScaler ADC and NetScaler Gateway 13.0 before 13.0-91.13
NetScaler ADC 13.1-FIPS before 13.1-37.159
NetScaler ADC 12.1-FIPS before 12.1-65.36
NetScaler ADC 12.1-NDcPP before 12.65.36
Note: NetScaler ADC and NetScaler Gateway version 12.1 is now End Of Life (EOL) and is vulnerable.
This bulletin only applies to customer-managed NetScaler ADC and NetScaler Gateway. Customers using Citrix-managed cloud services or Citrix-managed Adaptive Authentication do not need to take any action.
CVE ID
Affected Products
Description
Pre-requisites
CWE
CVSS
CVE-2023-3466
Citrix ADC
Reflected Cross-Site Scripting (XSS)
Requires victim to access an attacker-controlled link in the browser while being on a network with connectivity to the NSIP
Exploits of CVE-2023-3519 on unmitigated appliances have been observed. Cloud Software Group strongly urges affected customers of NetScaler ADC and NetScaler Gateway to install the relevant updated versions as soon as possible.
NetScaler ADC and NetScaler Gateway 13.1-49.13 and later releases
NetScaler ADC and NetScaler Gateway 13.0-91.13 and later releases of 13.0
NetScaler ADC 13.1-FIPS 13.1-37.159 and later releases of 13.1-FIPS
NetScaler ADC 12.1-FIPS 12.1-65.36 and later releases of 12.1-FIPS
NetScaler ADC 12.1-NDcPP 12.1-65.36 and later releases of 12.1-NDcPP
Note: NetScaler ADC and NetScaler Gateway version 12.1 is now End Of Life (EOL). Customers are recommended to upgrade their appliances to one of the supported versions that address the vulnerabilities.
This issue has been addressed in the following versions of Citrix Secure Access client for Ubuntu:
23.5.2 and later releases
Citrix recommends that customers who are affected by the above vulnerability upgrade the Citrix Secure Access client for Ubuntu installed on their endpoints by taking the following actions as soon as possible:
If Citrix Secure Access client for Ubuntu is distributed via the SSL VPN upgrade control feature of Citrix ADC or Citrix Gateway:
Check the versions of Citrix Secure Access client for Ubuntu that are being distributed by each Citrix ADC or Citrix Gateway instance. This can be done by viewing the file located at /var/netscaler/gui/vpn/scripts/linux/clientversions.xml. If it is a vulnerable version, customers must:
Citrix thanks Rilke Petrosky of F2TC Cyber Security 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.
This issue has been addressed in the following versions of the Citrix Secure Access client for Windows:
23.5.1.3 and later releases
Citrix recommends that customers who are affected by the above vulnerability upgrade the Citrix Secure Access client for Windows installed on their endpoints by taking the following actions as soon as possible:
If Citrix Secure Access client for Windows is distributed via the SSL VPN upgrade control feature of Citrix ADC or Citrix Gateway:
Check the versions of the Citrix Secure Access client for Windows that are being distributed by each Citrix ADC or Citrix Gateway instance. This can be done using either GUI (instructions at: https://www.citrix.com/downloads/citrix-gateway/plug-ins/citrix-secure-access-client-for-windows.html) or by viewing the file located at /var/netscaler/gui/vpn/pluginlist.xml. If it is a vulnerable version, customers must:
