CVE-2020-1992

PAN-OS on PA-7000 Series: Varrcvr daemon network-based denial of service or privilege escalation

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A format string vulnerability in the Varrcvr daemon of PAN-OS on PA-7000 Series devices with a Log Forwarding Card (LFC) allows remote attackers to crash the daemon creating a denial of service condition or potentially execute code with root privileges. This issue affects Palo Alto Networks PAN-OS 9.0 versions before 9.0.7; PAN-OS 9.1 versions before 9.1.2 on PA-7000 Series devices with an LFC installed and configured. This issue requires WildFire services to be configured and enabled. This issue does not affect PAN-OS 8.1 and earlier releases. This issue does not affect any other PA Series firewalls.

Una vulnerabilidad de cadena de formato en el demonio Varrcvr de PAN-OS en dispositivos PA-7000 Series con Log Forwarding Card (LFC), permite a atacantes remotos bloquear el demonio creando una condición de denegación de servicio o potencialmente ejecutar código con privilegios root. Este problema afecta a Palo Alto Networks PAN-OS versiones 9.0 anteriores a 9.0.7; versiones PAN-OS 9.1 anteriores a 9.1.2 en dispositivos PA-7000 Series con un LFC instalado y configurado. Este problema requiere que los servicios WildFire estén configurados y habilitados. Este problema no afecta a PAN-OS versiones 8.1 y anteriores. Este problema no afecta a ningún otro firewall de PA Series.

*Credits: This issue was found by a customer.

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-04 CVE Reserved
2020-04-08 CVE Published
2024-05-18 EPSS Updated
2024-09-17 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-134: Use of Externally-Controlled Format String

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://security.paloaltonetworks.com/CVE-2020-1992	2020-04-10

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"	>= 9.0.0 < 9.0.7 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 9.0.0 < 9.0.7"	-	Affected	in	Paloaltonetworks Search vendor "Paloaltonetworks"	Pa-7050 Search vendor "Paloaltonetworks" for product "Pa-7050"	-	-	Safe
Paloaltonetworks Search vendor "Paloaltonetworks"	Pan-os Search vendor "Paloaltonetworks" for product "Pan-os"	>= 9.0.0 < 9.0.7 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 9.0.0 < 9.0.7"	-	Affected	in	Paloaltonetworks Search vendor "Paloaltonetworks"	Pa-7080 Search vendor "Paloaltonetworks" for product "Pa-7080"	-	-	Safe
Paloaltonetworks Search vendor "Paloaltonetworks"	Pan-os Search vendor "Paloaltonetworks" for product "Pan-os"	>= 9.1.0 < 9.1.2 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 9.1.0 < 9.1.2"	-	Affected	in	Paloaltonetworks Search vendor "Paloaltonetworks"	Pa-7050 Search vendor "Paloaltonetworks" for product "Pa-7050"	-	-	Safe
Paloaltonetworks Search vendor "Paloaltonetworks"	Pan-os Search vendor "Paloaltonetworks" for product "Pan-os"	>= 9.1.0 < 9.1.2 Search vendor "Paloaltonetworks" for product "Pan-os" and version " >= 9.1.0 < 9.1.2"	-	Affected	in	Paloaltonetworks Search vendor "Paloaltonetworks"	Pa-7080 Search vendor "Paloaltonetworks" for product "Pa-7080"	-	-	Safe