CVE-2020-2002: PAN-OS: Spoofed Kerberos key distribution center authentication bypass

Published May 13, 2020
·
Updated

An authentication bypass by spoofing vulnerability exists in the authentication daemon and User-ID components of Palo Alto Networks PAN-OS by failing to verify the integrity of the Kerberos key distribution center (KDC) before authenticating users. This affects all forms of authentication that use a Kerberos authentication profile. A man-in-the-middle type of attacker with the ability to intercept communication between PAN-OS and KDC can login to PAN-OS as an administrator. This issue affects: PAN-OS 7.1 versions earlier than 7.1.26; PAN-OS 8.1 versions earlier than 8.1.13; PAN-OS 9.0 versions earlier than 9.0.6; All version of PAN-OS 8.0.

Affected Software

4 affected components
Palo Alto Networks PAN-OS>=7.1.0<7.1.26
Palo Alto Networks PAN-OS>=8.0.0<=8.0.20
Palo Alto Networks PAN-OS>=8.1.0<8.1.13
Palo Alto Networks PAN-OS>=9.0.0<9.0.6

Remediation

Information

This issue is fixed in PAN-OS 7.1.26, PAN-OS 8.1.13, PAN-OS 9.0.6, and all later PAN-OS versions. PAN-OS 8.0 is now end-of-life as of October 31, 2019, and is no longer covered by our Product Security Assurance policies.

Event History

May 13, 2020
CVE Published
via MITRE·07:07 PM
Data Sourced
via MITRE·07:07 PM
RemedyDescriptionSeverityWeakness

Frequently Asked Questions

1

What is CVE-2020-2002?

CVE-2020-2002 is an authentication bypass vulnerability in Palo Alto Networks PAN-OS that allows spoofing of the Kerberos key distribution center (KDC).

2

How does CVE-2020-2002 affect Palo Alto Networks PAN-OS?

CVE-2020-2002 affects all versions of Palo Alto Networks PAN-OS up to and including 9.0.6.

3

What is the severity of CVE-2020-2002?

CVE-2020-2002 has a severity rating of 8.1, which is considered high.

4

How can the CVE-2020-2002 vulnerability be exploited?

The CVE-2020-2002 vulnerability can be exploited by spoofing the Kerberos key distribution center (KDC) and bypassing authentication.

5

Is there a fix available for CVE-2020-2002?

Yes, Palo Alto Networks has released patches to address the CVE-2020-2002 vulnerability. It is recommended to update to the latest version of PAN-OS, as applicable.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203