CVE-2024-3393 Palo Alto Networks PAN-OS: software flaw
In plain words: A mistake in the software that attackers have found a way to abuse. Depends on the product — see the description and the vendor advisory.
Confirmed exploited by CISA on · US federal patch deadline Jan 20, 2025
What to do
- Install Palo Alto Networks's security update for PAN-OS. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Install system updates the day they come out — most phone zero-days are fixed in a point release.
- Restart your phone every few days; some spyware does not survive a reboot.
- If you are a journalist, activist, lawyer, politician or executive, turn on Lockdown Mode (iPhone) or Advanced Protection (Android).
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Messages, photos, location, microphone and camera. The most serious ones are "zero-click": no tap needed from the owner. They are usually used as spyware against a small number of chosen people.
The details
- Official name
- Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability
- Product
- Palo Alto Networks PAN-OS
- CISA description
- 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.
- Type of flaw
- Software flaw (CWE-754)
- Confirmed exploited
- Dec 30, 2024
- US federal patch deadline
- Jan 20, 2025
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Answering about CVE-2024-3393 ·
Questions about CVE-2024-3393
Is CVE-2024-3393 being exploited?
Yes. CISA added CVE-2024-3393 to its Known Exploited Vulnerabilities catalog on Dec 30, 2024, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2024-3393?
Install Palo Alto Networks's security update for PAN-OS. If no update exists, follow the vendor's workaround or stop using the product until one ships. Install system updates the day they come out — most phone zero-days are fixed in a point release.
Am I affected by CVE-2024-3393?
Only if you use Palo Alto Networks PAN-OS. This one is aimed at devices or apps of the kind people own.