Vulnerability · Published May 13, 2020 · Assigned by palo_alto

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

High 8.1

In plain English

A high-severity authentication bypass by spoofing in PAN-OS from Palo Alto Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)1.3%top 28.8% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
Palo Alto Networks	PAN-OS	8.0.*8.1 – before 8.1.139.0 – before 9.0.67.1 – before 7.1.26

Weakness: CWE-290 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://security.paloaltonetworks.com/CVE-2020-2002 x_refsource_MISC