CVE-2021-3031
CVSS V2 Low 3.3
CVSS V3 Medium 4.3
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.
Overview
- CVE ID
- CVE-2021-3031
- Assigner
- psirt@paloaltonetworks.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-01-13T18:15:14
- Last Modified Date
- 2022-10-27T12:51:30
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | 1 | OR | 8.1.0 | 8.1.18 |
| cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | 1 | OR | 9.0.0 | 9.0.12 |
| cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | 1 | OR | 9.1.0 | 9.1.5 |
| cpe:2.3:h:paloaltonetworks:pa-200:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:paloaltonetworks:pa-2020:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:paloaltonetworks:pa-2050:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:paloaltonetworks:pa-220:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:paloaltonetworks:pa-3020:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:paloaltonetworks:pa-3050:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:paloaltonetworks:pa-3060:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:paloaltonetworks:pa-3220:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:paloaltonetworks:pa-3250:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:paloaltonetworks:pa-3260:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:paloaltonetworks:pa-500:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:paloaltonetworks:pa-5200:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:paloaltonetworks:pa-800:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:A/AC:L/Au:N/C:P/I:N/A:N
- Access Vector
- ADJACENT_NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 3.3
- Severity
- LOW
- Exploitability Score
- 6.5
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Attack Vector
- ADJACENT_NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 4.3
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 1.4
References
| Reference URL | Reference Tags |
|---|---|
| https://security.paloaltonetworks.com/CVE-2021-3031 | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-3031 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3031 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:26:51 | Added to TrackCVE | |||
| 2022-12-05 20:01:57 | 2021-01-13T18:15Z | 2021-01-13T18:15:14 | CVE Published Date | updated |
| 2022-12-05 20:01:57 | 2022-10-27T12:51:30 | CVE Modified Date | updated | |
| 2022-12-05 20:01:57 | Analyzed | Vulnerability Status | updated |