Defending Against Active Exploitation of Citrix NetScaler ADC and Gateway Appliances

TL;DR

Active exploitation of two zero-day vulnerabilities in Citrix NetScaler ADC and Gateway appliances has been detected, impacting various sectors. Organizations are urged to patch these vulnerabilities immediately to prevent unauthorized access.

Key Takeaways

• Inspect and update web server configurations on NetScaler appliances.
• Audit directories for unauthorized PHP scripts or web shells.
• Review access and error logs for signs of compromise.
• Implement immediate patching and containment strategies.