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2024-12-27
Palo Alto Networks PAN-OS DNS Security Denial of Service and Infinite Reboot Loop Vulnerability (CVE-2024-3393) Analysis and Mitigation Guide
[Affected Scope] Palo Alto Networks PAN-OS software versions with the DNS Security feature enabled
[Impact] An unauthenticated remote attacker can send malicious packets through the data plane, causing the firewall to reboot. Repeated exploitation forces the device into maintenance mode, leading to a complete network outage
[Mitigation] Immediately upgrade PAN-OS to the patched versions recommended by the vendor, and review DNS Security profile configurations as a temporary measure