SAML authentication bypass in PAN-OS



Published: 2020-06-30
Risk High
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-2021
CWE ID CWE-287
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Palo Alto PAN-OS
Operating systems & Components / Operating system

Vendor Palo Alto Networks, Inc.

Security Advisory

This security advisory describes one high risk vulnerability.

1) SAML authenticated bypass

Risk: High

CVSSv3: 9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-2021

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: Yes [Search exploit]

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing SAML authentication requests. A remote attacker can bypass authentication process and gain unauthorized access to protected resources.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Palo Alto PAN-OS: 7.1, 7.1.0, 7.1.1, 7.1.1, 7.1.2, 7.1.3, 7.1.4, 7.1.4-h2, 7.1.5, 7.1.6, 7.1.7, 7.1.8, 7.1.9, 7.1.9-h4, 7.1.10, 7.1.11, 7.1.12, 7.1.13, 7.1.14, 7.1.15, 7.1.16, 7.1.17, 7.1.18, 7.1.19, 7.1.20, 7.1.21, 7.1.22, 7.1.23, 7.1.24, 7.1.24-h1, 7.1.25, 7.1.26, 8.0, 8.0.0, 8.0.1, 8.0.2, 8.0.3, 8.0.3-h4, 8.0.4, 8.0.4-h2, 8.0.5, 8.0.6, 8.0.6-h3, 8.0.7, 8.0.8, 8.0.9, 8.0.10, 8.0.11, 8.0.11-h1, 8.0.12, 8.0.13, 8.0.14, 8.0.15, 8.0.16, 8.0.17, 8.0.18, 8.0.19, 8.0.19-h1, 8.0.20, 8.0.21, 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, 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, 9.1.0, 9.1.1, 9.1.2

CPE External links

https://security.paloaltonetworks.com/CVE-2020-2021

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.