Netscaler CVE-2023-3519 What is it and what do you need to do?
CVE-2023-3519 is a critical vulnerability that affects Citrix NetScaler ADC and NetScaler Gateway products.
It allows an unauthenticated remote attacker to execute arbitrary code on a vulnerable server.
The vulnerability was discovered and exploited by threat actors in July 2023, and Citrix released a patch on July 18, 20231.
To exploit this vulnerability, the server must be configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or an AAA virtual server2.
This vulnerability is considered very dangerous because it can compromise the security and integrity of the affected systems and networks.
If you are using Citrix NetScaler ADC or NetScaler Gateway products, you should apply the patch as soon as possible or follow the mitigation steps provided by Citrix3. You can also use the detection methods and tools suggested by CISA1 and Tenable4 to check if your system has been compromised by this vulnerability.
