NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2023-4966 and CVE-2023-4967
Description of Problem
Multiple vulnerabilities have been discovered in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway).
Affected Versions:
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
| CVE ID | Description | Pre-requisites | CWE | CVSS |
|---|---|---|---|---|
| CVE-2023-4966 | Sensitive information disclosure | Appliance must be configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server | CWE-119 | 9.4 |
| CVE-2023-4967 | Denial of service | Appliance must be configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server | CWE-119 | 8.2 |
Mitigating Factors
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
What Citrix is Doing
Obtaining Support on This Issue
Subscribe to Receive Alerts
Reporting Security Vulnerabilities to Citrix
Disclaimer
Changelog
| 2023-10-10 T 16:00:00Z | Initial Publication |
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