CVE-2021-3031
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
PAN-OS: Information exposure in Ethernet data frame construction (Etherleak)
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
PAN-OS
- Vendor
- Palo Alto Networks
- Product
- PAN-OS
- Platforms
- PA-200, PA-220, PA-500, PA-800, PA-2000 Series, PA-3000 Series, PA-3200 Series, PA-5200
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 8.1 | affected | custom | 8.1.18 | Unavailable | None listed |
| 9.0 | affected | custom | 9.0.12 | Unavailable | None listed |
| 9.1 | affected | custom | 9.1.5 | Unavailable | None listed |
PAN-OS
- Vendor
- Palo Alto Networks
- Product
- PAN-OS
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 10.0.* | unaffected | Unavailable | Unavailable | Unavailable | None listed |
| 8.1.18 | unaffected | custom | 8.1* | Unavailable | None listed |
| 9.0.12 | unaffected | custom | 9.0* | Unavailable | None listed |
| 9.1.5 | unaffected | custom | 9.1* | Unavailable | None listed |