citrix netscaler-gateway CVE-2023-4966 vulnerability in Citrix Products
Published on October 10, 2023

Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA ?virtual?server. 

Vendor Advisory NVD

Known Exploited Vulnerability

This Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Citrix NetScaler ADC and NetScaler Gateway contain a buffer overflow vulnerability that allows for sensitive information disclosure when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server.

The following remediation steps are recommended / required by November 8, 2023: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Vulnerability Analysis

CVE-2023-4966 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. It has the highest possible exploitability rating (3.9). The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.


Products Associated with CVE-2023-4966

You can be notified by stack.watch whenever vulnerabilities like CVE-2023-4966 are published in these products:

Citrix Netscaler Gateway
 
Citrix Netscaler Application Delivery Controller
 

What versions are vulnerable to CVE-2023-4966?