CVE-2020-1998

PAN-OS: Improper SAML SSO authorization of shared local users

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An improper authorization vulnerability in PAN-OS that mistakenly uses the permissions of local linux users instead of the intended SAML permissions of the account when the username is shared for the purposes of SSO authentication. This can result in authentication bypass and unintended resource access for the user. 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; PAN-OS 9.1 versions earlier than 9.1.1; All versions of PAN-OS 8.0.

Una vulnerabilidad de autorización incorrecta en PAN-OS que utiliza por error los permisos de los usuarios locales de Linux en lugar de los permisos SAML previstos de la cuenta cuando el nombre de usuario se comparte con fines de autenticación SSO. Esto puede provocar la omisión de autenticación y el acceso no deseado a los recursos para el usuario. Este problema afecta: PAN-OS 7.1 versiones anteriores a la versión 7.1.26; PAN-OS 8.1 versiones anteriores a la versión 8.1.13; PAN-OS 9.0 versiones anteriores a la versión 9.0.6; PAN-OS 9.1 versiones anteriores a la versión 9.1.1; Todas las versiones de PAN-OS 8.0.

*Credits: Palo Alto Networks would like to thank Maurice Lok-Hin for discovering and reporting this issue.

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-04 CVE Reserved
2020-05-13 CVE Published
2023-03-07 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-285: Improper Authorization
CWE-863: Incorrect Authorization

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://security.paloaltonetworks.com/CVE-2020-1998	2020-05-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Paloaltonetworks Search vendor "Paloaltonetworks"		Pan-os Search vendor "Paloaltonetworks" for product "Pan-os"				>= 7.1.0 < 7.1.26 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 7.1.0 < 7.1.26"		-		Affected
Paloaltonetworks Search vendor "Paloaltonetworks"		Pan-os Search vendor "Paloaltonetworks" for product "Pan-os"				>= 8.0.0 <= 8.0.20 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 8.0.0 <= 8.0.20"		-		Affected
Paloaltonetworks Search vendor "Paloaltonetworks"		Pan-os Search vendor "Paloaltonetworks" for product "Pan-os"				>= 8.1.0 < 8.1.13 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 8.1.0 < 8.1.13"		-		Affected
Paloaltonetworks Search vendor "Paloaltonetworks"		Pan-os Search vendor "Paloaltonetworks" for product "Pan-os"				>= 9.0.0 < 9.0.6 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 9.0.0 < 9.0.6"		-		Affected
Paloaltonetworks Search vendor "Paloaltonetworks"		Pan-os Search vendor "Paloaltonetworks" for product "Pan-os"				>= 9.1.0 < 9.1.1 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 9.1.0 < 9.1.1"		-		Affected