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.
This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Pan-os | Paloaltonetworks | 7.1.0 (including) | 7.1.26 (excluding) |
| Pan-os | Paloaltonetworks | 8.0.0 (including) | 8.0.20 (including) |
| Pan-os | Paloaltonetworks | 8.1.0 (including) | 8.1.13 (excluding) |
| Pan-os | Paloaltonetworks | 9.0.0 (including) | 9.0.6 (excluding) |