Palo Alto Networks PAN-OS DNS Security Denial of Service Vulnerability
CVE-2024-3393 Published on December 27, 2024
A Denial of Service vulnerability in the DNS Security feature of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to send a malicious packet through the data plane of the firewall that reboots the firewall. Repeated attempts to trigger this condition will cause the firewall to enter maintenance mode.
Known Exploited Vulnerability
This Palo Alto Networks PAN-OS Malformed DNS Packet Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Palo Alto Networks PAN-OS contains a vulnerability in parsing and logging malformed 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.
The following remediation steps are recommended / required by January 20, 2025: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Weakness Type
Improper Check for Unusual or Exceptional Conditions
The software does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the software.
Products Associated with CVE-2024-3393
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2024-3393 are published in Palo Alto Networks PAN-OS:
Affected Versions
Palo Alto Networks Cloud NGFW:- Version All is unaffected.
- Version 11.2.0 and below 11.2.3 is affected.
- Version 11.1.0 and below 11.1.2-h16 is affected.
- Version 10.2.8 and below 10.2.8-h19 is affected.
- Version 10.1.14 and below 10.1.14-h8 is affected.
- Version 10.2.0 and below 10.2.8 is unaffected.
- Version 11.2.0 and below 11.2.3 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.