Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability (CVE-2024-3393)
Severity: high · Patch status: unknown · Since 2024-12-30 · CVE-2024-3393
Palo Alto Networks PAN-OS contains a vulnerability in parsing and logging malicious DNS packets in the DNS Security feature that, when exploited, allows an unauthenticated attacker to remotely reboot the firewall. Repeated attempts to trigger this condition will cause the firewall to enter maintenance mode. CISA added CVE-2024-3393 to its Known Exploited Vulnerabilities catalog on Dec 30, 2024, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Jan 20, 2025 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
