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CVE-2021-3031

PAN-OS: Information exposure in Ethernet data frame construction (Etherleak)

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 8.1.18, 9.0.12, 9.1.5
None on Exploit-DB, Metasploit or GitHub

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Palo Alto Networks PAN-OS

    From 8.1 · fixed in 8.1.18; From 9.0 · fixed in 9.0.12; From 9.1 · fixed in 9.1.5

  • Palo Alto Networks PAN-OS

    Version range not reported

References 1

security.paloaltonetworks.com