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A threat actor has compromised close to 2,000 thousand Citrix NetScaler servers in a massive campaign exploiting the critical-severity remote code execution tracked as CVE-2023-3519.
The vulnerability is already under active attack
Citrix ships an emergency patch to cover a pre-auth code execution flaw in network appliances and the NSA blames a Chinese hacking group for zero-day exploitation.
Citrix confirms ongoing DDoS attack impacting NetScaler ADCs By 06:26 AM Citrix has confirmed today that an ongoing 'DDoS attack pattern' using DTLS as an amplification vector is affecting Citrix Application Delivery Controller (ADC) networking appliances with EDT enabled. Datagram Transport Layer Security (DTLS) is a communications protocol for securing delay-sensitive apps and services that use datagram transport. DTLS is based on the Transport Layer Security (TLS) protocol and it is designed to prevent eavesdropping and tampering, and to protect data privacy. Reports of the attack have s...