cvedb.io
CVE-2021-3031
MEDIUM · CVSS 4.3
EPSS exploitation probability: 0%
Published 2021-01-13T18:15:14.603 · Last modified 2026-06-17T04:04:35.567

Summary

Padding bytes in Ethernet packets on PA-200, PA-220, PA-500, PA-800, PA-2000 Series, PA-3000 Series, PA-3200 Series, PA-5200 Series, and PA-7000 Series firewalls are not cleared before the data frame is created. This leaks a small amount of random information from the firewall memory into the Ethernet packets. An attacker on the same Ethernet subnet as the PAN-OS firewall is able to collect potentially sensitive information from these packets. This issue is also known as Etherleak and is detected by security scanners as CVE-2003-0001. This issue impacts: PAN-OS 8.1 version earlier than PAN-OS 8.1.18; PAN-OS 9.0 versions earlier than PAN-OS 9.0.12; PAN-OS 9.1 versions earlier than PAN-OS 9.1.5.

Affected products

paloaltonetworks — pan-os

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.