Palo Alto Networks PAN-OS 8.0.x < 8.1.15 / 8.1.x < 8.1.15 / 9.0.x < 9.0.9 / 9.1.x < 9.1.3 Authentication Bypass in SAML Authentication (CVE-2020-2021)

Critical Nessus Plugin ID 137880


The remote PAN-OS host is affected by an authentication bypass vulnerability.


The version of Palo Alto Networks PAN-OS running on the remote host is 8.0.x prior to 8.1.15 or 8.1.x prior to 8.1.15 or 9.0.x prior to 9.0.9 or 9.1.x prior to 9.1.3. It is, therefore, affected by a SAML authentication bypass vulnerability.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Upgrade to PAN-OS 8.1.15 / 8.1.15 / 9.0.9 / 9.1.3 or later

See Also

Plugin Details

Severity: Critical

ID: 137880

File Name: palo_alto_CVE-2020-2021.nasl

Version: 1.3

Type: combined

Published: 2020/06/29

Updated: 2020/07/01

Dependencies: 72816

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Critical

CVSS Score Source: CVE-2020-2021

CVSS v2.0

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 10

Temporal Score: 8.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:paloaltonetworks:pan-os

Required KB Items: Host/Palo_Alto/Firewall/Version, Host/Palo_Alto/Firewall/Full_Version, Host/Palo_Alto/Firewall/Source, Settings/ParanoidReport

Patch Publication Date: 2020/06/29

Vulnerability Publication Date: 2020/06/29

Reference Information

CVE: CVE-2020-2021

IAVA: 2020-A-0282

CWE: 347