// For flags

CVE-2020-1626

Junos OS Evolved: Denial of Service vulnerability in processing high rate of specific packets

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in Juniper Networks Junos OS Evolved may allow an attacker to cause a Denial of Service (DoS) by sending a high rate of specific packets to the device, resulting in a pfemand process crash. The pfemand process is responsible for packet forwarding on the device. By continuously sending the packet flood, an attacker can repeatedly crash the pfemand process causing a sustained Denial of Service. This issue can only be triggered by traffic sent to the device. Transit traffic does not cause this issue. This issue affects all version of Junos OS Evolved prior to 19.1R1-EVO.

Una vulnerabilidad en Juniper Networks Junos OS Evolved, puede permitir a un atacante causar una Denegación de servicio (DoS) mediante el envío de una alta tasa de paquetes específicos hacia el dispositivo, resultando en un bloqueo del proceso pfemand. El proceso pfemand es responsable del reenvío de paquetes en el dispositivo. Al enviar continuamente una inundación de paquetes, un atacante puede bloquear repetidas veces el proceso pfemand causando una Denegación de Servicio sostenida. Este problema solo puede ser desencadenado mediante el tráfico enviado hacia el dispositivo. El tráfico de tránsito no causa este problema. Este problema afecta a todas las versiones de Junos OS Evolved anteriores a 19.1R1-EVO.

*Credits: N/A
CVSS Scores
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
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-11-04 CVE Reserved
  • 2020-04-08 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-09-17 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
References (2)
URL Tag Source
https://tools.ietf.org/html/rfc6192 Third Party Advisory
URL Date SRC
URL Date SRC
URL Date SRC
https://kb.juniper.net/JSA11005 2021-07-21
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Juniper
Search vendor "Juniper"
 Junos Os Evolved
Search vendor "Juniper" for product "Junos Os Evolved"
 18.3
Search vendor "Juniper" for product "Junos Os Evolved" and version "18.3"
r1
Affected