CVE-2020-2002: PAN-OS: Spoofed Kerberos key distribution center authentication bypass
First published: Wed 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.
Credit: psirt@paloaltonetworks.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Paloaltonetworks Pan-os | >=7.1.0<7.1.26 | |
| Paloaltonetworks Pan-os | >=8.0.0<=8.0.20 | |
| Paloaltonetworks Pan-os | >=8.1.0<8.1.13 | |
| Paloaltonetworks Pan-os | >=9.0.0<9.0.6 |
Remedy
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.
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Reference Links
Frequently Asked Questions
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).
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.
What is the severity of CVE-2020-2002?
CVE-2020-2002 has a severity rating of 8.1, which is considered high.
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.
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.
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