CVE-2021-3031
PAN-OS: Information exposure in Ethernet data frame construction (Etherleak)
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.
INFO
Published Date :
Jan. 13, 2021, 6:15 p.m.
Last Modified :
Nov. 21, 2024, 6:20 a.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2021-3031
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Upgrade to PAN-OS 8.1.18 / 9.0.12 / 9.1.5 or later
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-3031.
| URL | Resource |
|---|---|
| https://security.paloaltonetworks.com/CVE-2021-3031 | Vendor Advisory |
| https://security.paloaltonetworks.com/CVE-2021-3031 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3031 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-3031
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-3031 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3031 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://security.paloaltonetworks.com/CVE-2021-3031 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Oct. 27, 2022
Action Type Old Value New Value Removed CWE NIST CWE-200 Added CWE NIST CWE-212 -
Initial Analysis by [email protected]
Jan. 19, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:P/I:N/A:N) Changed Reference Type https://security.paloaltonetworks.com/CVE-2021-3031 No Types Assigned https://security.paloaltonetworks.com/CVE-2021-3031 Vendor Advisory Added CWE NIST CWE-200 Added CPE Configuration AND OR *cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* versions from (including) 8.1.0 up to (excluding) 8.1.18 *cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (excluding) 9.0.12 *cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* versions from (including) 9.1.0 up to (excluding) 9.1.5 OR cpe:2.3:h:paloaltonetworks:pa-200:-:*:*:*:*:*:*:* cpe:2.3:h:paloaltonetworks:pa-2020:-:*:*:*:*:*:*:* cpe:2.3:h:paloaltonetworks:pa-2050:-:*:*:*:*:*:*:* cpe:2.3:h:paloaltonetworks:pa-220:-:*:*:*:*:*:*:* cpe:2.3:h:paloaltonetworks:pa-3020:-:*:*:*:*:*:*:* cpe:2.3:h:paloaltonetworks:pa-3050:-:*:*:*:*:*:*:* cpe:2.3:h:paloaltonetworks:pa-3060:-:*:*:*:*:*:*:* cpe:2.3:h:paloaltonetworks:pa-3220:-:*:*:*:*:*:*:* cpe:2.3:h:paloaltonetworks:pa-3250:-:*:*:*:*:*:*:* cpe:2.3:h:paloaltonetworks:pa-3260:-:*:*:*:*:*:*:* cpe:2.3:h:paloaltonetworks:pa-500:-:*:*:*:*:*:*:* cpe:2.3:h:paloaltonetworks:pa-5200:-:*:*:*:*:*:*:* cpe:2.3:h:paloaltonetworks:pa-800:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jan. 13, 2021
Action Type Old Value New Value Changed 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. 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.
Vulnerability Scoring Details
Base CVSS Score: 4.3
Base CVSS Score: 3.3
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.09 }} 0.01%
score
0.26151
percentile