CVE-2021-3053

PAN-OS: Exceptional Condition Denial-of-Service (DoS)

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An improper handling of exceptional conditions vulnerability exists in the Palo Alto Networks PAN-OS dataplane that enables an unauthenticated network-based attacker to send specifically crafted traffic through the firewall that causes the service to crash. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.20; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.9; PAN-OS 10.0 versions earlier than PAN-OS 10.0.5. This issue does not affect Prisma Access.

Se presenta una vulnerabilidad de administración inapropiada de condiciones excepcionales en el plano de datos de PAN-OS de Palo Alto Networks que permite a un atacante no autenticado basado en la red enviar tráfico específicamente diseñado mediante el firewall que causa un bloqueo del servicio. Los intentos repetidos de enviar esta petición resultan en una denegación de servicio de todos los servicios de PAN-OS, al reiniciar el dispositivo y poniéndolo en modo de mantenimiento. Este problema afecta a: PAN-OS versión 8.1 anteriores a PAN-OS versión 8.1.20; PAN-OS versión 9.0 anteriores a PAN-OS versión 9.0.14; PAN-OS versión 9.1 anteriores a PAN-OS versión 9.1.9; PAN-OS versión 10.0 anteriores a PAN-OS versión 10.0.5. Este problema no afecta a Prisma Access

*Credits: This issue was found by Nicholas Newsom of Palo Alto Networks during internal security review.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-06 CVE Reserved
2021-09-08 CVE Published
2024-05-24 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-755: Improper Handling of Exceptional Conditions

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://security.paloaltonetworks.com/CVE-2021-3053	2021-09-15

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"				>= 8.1.0 < 8.1.20 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 8.1.0 < 8.1.20"		-		Affected
Paloaltonetworks Search vendor "Paloaltonetworks"		Pan-os Search vendor "Paloaltonetworks" for product "Pan-os"				>= 9.0.0 < 9.0.14 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 9.0.0 < 9.0.14"		-		Affected
Paloaltonetworks Search vendor "Paloaltonetworks"		Pan-os Search vendor "Paloaltonetworks" for product "Pan-os"				>= 9.1.0 < 9.1.9 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 9.1.0 < 9.1.9"		-		Affected
Paloaltonetworks Search vendor "Paloaltonetworks"		Pan-os Search vendor "Paloaltonetworks" for product "Pan-os"				>= 10.0.0 < 10.0.5 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 10.0.0 < 10.0.5"		-		Affected