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

Synopsis

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

Description

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.

Solution

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

See Also

https://security.paloaltonetworks.com/CVE-2020-2021

https://cwe.mitre.org/data/definitions/347.html

Plugin Details

Severity: Critical

ID: 137880

File Name: palo_alto_CVE-2020-2021.nasl

Version: 1.8

Type: combined

Published: 6/29/2020

Updated: 12/5/2022

Risk Information

VPR

Risk Factor: High

Score: 8.1

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 8.1

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: E:H/RL:OF/RC:C

CVSS Score Source: CVE-2020-2021

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 9.5

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

Temporal Vector: E:H/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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/29/2020

Vulnerability Publication Date: 6/29/2020

CISA Known Exploited Dates: 4/15/2022

Reference Information

CVE: CVE-2020-2021

IAVA: 2020-A-0282-S

CEA-ID: CEA-2020-0054

CWE: 347