What is the severity of CVE-2021-3056?

CVE-2021-3056 has a severity score of 8.8, which is classified as high.

How can an attacker exploit CVE-2021-3056?

An authenticated attacker can exploit CVE-2021-3056 during SAML authentication to execute arbitrary code with root user privileges.

How to mitigate CVE-2021-3056?

To mitigate CVE-2021-3056, upgrade PAN-OS to version 8.1.20 or later, 9.0.14 or later, 9.1.9 or later, or 10.0.0.

Vulnerability/
CVE-2021-3056

high

8.8

CWE

787 120

10/11/2021

15/11/2021

CVE-2021-3056

Q: What is CVE-2021-3056?

CVE-2021-3056 is a memory corruption vulnerability in Palo Alto Networks PAN-OS GlobalProtect Clientless VPN.

Q: How does CVE-2021-3056 impact PAN-OS?

CVE-2021-3056 impacts PAN-OS 8.1 versions earlier than PAN-OS 8.1.20; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.9; and PAN-OS 10.0.0.

First published: Wed Nov 10 2021(Updated: )

A memory corruption vulnerability in Palo Alto Networks PAN-OS GlobalProtect Clientless VPN enables an authenticated attacker to execute arbitrary code with root user privileges during SAML authentication. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.20; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.9; PAN-OS 10.0 versions earlier than PAN-OS 10.0.1. Prisma Access customers with Prisma Access 2.1 Preferred firewalls are impacted by this issue.

Credit: psirt@paloaltonetworks.com

Affected Software	Affected Version	How to fix
Paloaltonetworks Pan-os	>=8.1.0<8.1.20
Paloaltonetworks Pan-os	>=9.0.0<9.0.14
Paloaltonetworks Pan-os	>=9.1.0<9.1.9
Paloaltonetworks Pan-os	=10.0.0

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Reference Links

https://security.paloaltonetworks.com/CVE-2021-3056

Frequently Asked Questions

What is CVE-2021-3056?
CVE-2021-3056 is a memory corruption vulnerability in Palo Alto Networks PAN-OS GlobalProtect Clientless VPN.
How does CVE-2021-3056 impact PAN-OS?
CVE-2021-3056 impacts PAN-OS 8.1 versions earlier than PAN-OS 8.1.20; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.9; and PAN-OS 10.0.0.
What is the severity of CVE-2021-3056?
CVE-2021-3056 has a severity score of 8.8, which is classified as high.
How can an attacker exploit CVE-2021-3056?
An authenticated attacker can exploit CVE-2021-3056 during SAML authentication to execute arbitrary code with root user privileges.
How to mitigate CVE-2021-3056?
To mitigate CVE-2021-3056, upgrade PAN-OS to version 8.1.20 or later, 9.0.14 or later, 9.1.9 or later, or 10.0.0.

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agent/softwarecombine
agent/first-publish-date
vendor/paloaltonetworks
canonical/paloaltonetworks pan-os
version/paloaltonetworks pan-os/8.1.0
version/paloaltonetworks pan-os/9.0.0
version/paloaltonetworks pan-os/9.1.0
version/paloaltonetworks pan-os/10.0.0

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