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Citrix ADC and Citrix Gateway Security Bulletin for CVE-2023-3519, CVE-2023-3466, CVE-2023-3467

Security Bulletin | Severity: Critical | {{likeCount}} found this helpful | Created: {{articleFormattedCreatedDate}} | Modified: {{articleFormattedModifiedDate}} | Status: Final
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Applicable Products

  • Citrix ADC
  • Citrix Gateway

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 12.1-55.297
  • NetScaler ADC 12.1-NDcPP before 12.1-55.297

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, Citrix Gateway 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 Improper Input ValidationCWE-20 8.3
CVE-2023-3467 Citrix ADC, Citrix Gateway Privilege Escalation to root administrator (nsroot) Authenticated access to NSIP or SNIP with management interface access Improper Privilege ManagementCWE-269 8
CVE-2023-3519 Citrix ADC, Citrix Gateway Unauthenticated remote code execution Appliance must be configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server Improper Control of Generation of Code ('Code Injection')CWE-94 9.8

What Customers Should Do

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 12.1-55.297 and later releases of 12.1-FIPS  
  • NetScaler ADC 12.1-NDcPP 12.1-55.297 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. 

Acknowledgements

Citrix thanks Wouter Rijkbost and Jorren Geurts of Resillion 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

2023-07-18 T 11:15:00Z Updated acknowledgment
2023-07-18 T 11:00:00Z Updated table to accurately represent affected products
2023-07-18 T 10:30:00Z Initial Publication
2023-07-18 T 13:30:00Z Updated 12.1 FIPs and NDcPP build details
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