#VU49514 Information disclosure


Published: 2021-01-13 | Updated: 2021-01-13

Vulnerability identifier: #VU49514

Vulnerability risk: Low

CVSSv3: 3.8 [CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3031

CWE-ID: CWE-200

Exploitation vector: Local network

Exploit availability: No

Vulnerable software: Palo Alto PAN-OS
Operating systems & Components / Operating system

Vendor: Palo Alto Networks, Inc.

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output during Ethernet data frame construction. 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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Palo Alto PAN-OS: 8.1, 8.1.0, 8.1.1, 8.1.2, 8.1.3, 8.1.4, 8.1.4-h2, 8.1.5, 8.1.6, 8.1.6-h2, 8.1.7, 8.1.8, 8.1.8-h4, 8.1.8-h5, 8.1.9, 8.1.9-h4, 8.1.10, 8.1.11, 8.1.12, 8.1.13, 8.1.14, 8.1.15, 8.1.16, 8.1.17, 9.0, 9.0.0, 9.0.1, 9.0.2, 9.0.2-h4, 9.0.3, 9.0.3-h2, 9.0.3-h3, 9.0.4, 9.0.5, 9.0.5-h3, 9.0.6, 9.0.7, 9.0.8, 9.0.9, 9.0.10, 9.0.11, 9.1, 9.1.0, 9.1.1, 9.1.2, 9.1.3, 9.1.4, 9.2.0

CPE

External links
https://security.paloaltonetworks.com/CVE-2021-3031


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability