NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2023-4966 and CVE-2023-4967

Oct 12, 2023

Citrix ADC
Citrix Gateway

Description of Problem

Multiple vulnerabilities have been discovered in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway).

Affected Versions:

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The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the vulnerabilities:

NetScaler ADC and NetScaler Gateway 14.1 before 14.1-8.50
NetScaler ADC and NetScaler Gateway 13.1 before 13.1-49.15
NetScaler ADC and NetScaler Gateway 13.0 before 13.0-92.19
NetScaler ADC 13.1-FIPS before 13.1-37.164
NetScaler ADC 12.1-FIPS before 12.1-55.300
NetScaler ADC 12.1-NDcPP before 12.1-55.300

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 products. Customers using Citrix-managed cloud services or Citrix-managed Adaptive Authentication do not need to take any action.

Summary:

NetScaler ADC and NetScaler Gateway contain unauthenticated buffer-related vulnerabilities mentioned below

Mitigating Factors

None.

What Customers Should Do

Cloud Software Group strongly urges affected customers of NetScaler ADC and NetScaler Gateway to install the relevant updated versions of NetScaler ADC and NetScaler Gateway as soon as possible:

NetScaler ADC and NetScaler Gateway 14.1-8.50 and later releases
NetScaler ADC and NetScaler Gateway  13.1-49.15 and later releases of 13.1
NetScaler ADC and NetScaler Gateway 13.0-92.19 and later releases of 13.0 
NetScaler ADC 13.1-FIPS 13.1-37.164 and later releases of 13.1-FIPS 
NetScaler ADC 12.1-FIPS 12.1-55.300 and later releases of 12.1-FIPS 
NetScaler ADC 12.1-NDcPP 12.1-55.300 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.

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.

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