CVEvulnerability

CVE-2021-3031

4.3 MEDIUM Published 2021-01-13 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-01-13
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0 ([email protected])
3.3 LOW — AV:A/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-200, CWE-212

Description

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 configurations

• paloaltonetworks pan-os (>= 8.1.0 < 8.1.18) • paloaltonetworks pan-os (>= 9.0.0 < 9.0.12) • paloaltonetworks pan-os (>= 9.1.0 < 9.1.5)

Related

Weakness · CWE (2)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-212 Improper Removal of Sensitive Information Before Storage or Transfer weakness

References