CVE-2020-1660

Junos OS: MX Series: Receipt of specific packets can cause services card to restart when DNS filtering is configured.

Severity Score

9.9

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

When DNS filtering is enabled on Juniper Networks Junos MX Series with one of the following cards MS-PIC, MS-MIC or MS-MPC, an incoming stream of packets processed by the Multiservices PIC Management Daemon (mspmand) process, responsible for managing "URL Filtering service", may crash, causing the Services PIC to restart. While the Services PIC is restarting, all PIC services including DNS filtering service (DNS sink holing) will be bypassed until the Services PIC completes its boot process. This vulnerability might allow an attacker to cause an extended Denial of Service (DoS) attack against the device and to cause clients to be vulnerable to DNS based attacks by malicious DNS servers when they send DNS requests through the device. As a result, devices which were once protected by the DNS Filtering service are no longer protected and at risk of exploitation. This issue affects Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S8; 18.3 versions prior to 18.3R3-S1; 18.4 versions prior to 18.4R3; 19.1 versions prior to 19.1R3; 19.2 versions prior to 19.2R2; 19.3 versions prior to 19.3R3. This issue does not affect Juniper Networks Junos OS 17.4, 18.1, and 18.2.

Cuando el filtrado de DNS está habilitado en Juniper Networks Junos MX Series con una de las siguientes tarjetas MS-PIC, MS-MIC o MS-MPC, un flujo entrante de paquetes procesados ??por el proceso Multiservices PIC Management Daemon (mspmand), responsable de administrar "URL Filtering service" puede bloquearse y causar que el Services PIC se reinicie. Mientras se reinicia el Services PIC, todos los servicios PIC, incluyendo el servicio de filtrado de DNS (DNS sink holing), se omitirán hasta que el Services PIC complete su proceso de inicio. Esta vulnerabilidad podría permitir a un atacante causar un ataque extendido de denegación de servicio (DoS) contra el dispositivo y que los clientes sean vulnerables a ataques basados ??en DNS por parte de servidores DNS maliciosos cuando envían peticiones de DNS mediante el dispositivo. Como resultado, los dispositivos que antes estaban protegidos por el servicio de filtrado de DNS ya no están protegidos y corren el riesgo de ser explotados. Este problema afecta a Juniper Networks Junos OS: versiones 17.3 anteriores a 17.3R3-S8; 18.3 versiones anteriores a 18.3R3-S1; versiones 18.4 anteriores a 18.4R3; versiones 19.1 anteriores a 19.1R3; versiones 19.2 anteriores a 19.2R2; versiones 19.3 anteriores a 19.3R3. Este problema no afecta a Juniper Networks Junos OS versiones anteriores a 17.4, 18.1 y 18.2

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-11-04 CVE Reserved
2020-10-16 CVE Published
2023-07-02 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://kb.juniper.net/JSA11054	2020-10-28

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 Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		-		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r1-s1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r2-s1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r2-s2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r2-s3		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r2-s4		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r2-s5		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r3		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r3-s1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r3-s2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r3-s3		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r3-s4		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				17.3 Search vendor "Juniper" for product "Junos" and version "17.3"		r3-s7		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.3 Search vendor "Juniper" for product "Junos" and version "18.3"		-		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.3 Search vendor "Juniper" for product "Junos" and version "18.3"		r1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.3 Search vendor "Juniper" for product "Junos" and version "18.3"		r1-s1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.3 Search vendor "Juniper" for product "Junos" and version "18.3"		r1-s2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.3 Search vendor "Juniper" for product "Junos" and version "18.3"		r1-s3		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.3 Search vendor "Juniper" for product "Junos" and version "18.3"		r1-s5		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.3 Search vendor "Juniper" for product "Junos" and version "18.3"		r1-s6		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.3 Search vendor "Juniper" for product "Junos" and version "18.3"		r2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.3 Search vendor "Juniper" for product "Junos" and version "18.3"		r2-s1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.3 Search vendor "Juniper" for product "Junos" and version "18.3"		r2-s2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.3 Search vendor "Juniper" for product "Junos" and version "18.3"		r2-s3		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.3 Search vendor "Juniper" for product "Junos" and version "18.3"		r3		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.4 Search vendor "Juniper" for product "Junos" and version "18.4"		-		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.4 Search vendor "Juniper" for product "Junos" and version "18.4"		r1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.4 Search vendor "Juniper" for product "Junos" and version "18.4"		r1-s1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.4 Search vendor "Juniper" for product "Junos" and version "18.4"		r1-s2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.4 Search vendor "Juniper" for product "Junos" and version "18.4"		r1-s5		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.4 Search vendor "Juniper" for product "Junos" and version "18.4"		r1-s6		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.4 Search vendor "Juniper" for product "Junos" and version "18.4"		r2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.4 Search vendor "Juniper" for product "Junos" and version "18.4"		r2-s1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.4 Search vendor "Juniper" for product "Junos" and version "18.4"		r2-s2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.4 Search vendor "Juniper" for product "Junos" and version "18.4"		r2-s3		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				18.4 Search vendor "Juniper" for product "Junos" and version "18.4"		r2-s4		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.1 Search vendor "Juniper" for product "Junos" and version "19.1"		-		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.1 Search vendor "Juniper" for product "Junos" and version "19.1"		r1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.1 Search vendor "Juniper" for product "Junos" and version "19.1"		r1-s1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.1 Search vendor "Juniper" for product "Junos" and version "19.1"		r1-s2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.1 Search vendor "Juniper" for product "Junos" and version "19.1"		r1-s3		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.1 Search vendor "Juniper" for product "Junos" and version "19.1"		r1-s4		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.1 Search vendor "Juniper" for product "Junos" and version "19.1"		r2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.1 Search vendor "Juniper" for product "Junos" and version "19.1"		r2-s1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.2 Search vendor "Juniper" for product "Junos" and version "19.2"		-		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.2 Search vendor "Juniper" for product "Junos" and version "19.2"		r1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.2 Search vendor "Juniper" for product "Junos" and version "19.2"		r1-s1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.2 Search vendor "Juniper" for product "Junos" and version "19.2"		r1-s2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.2 Search vendor "Juniper" for product "Junos" and version "19.2"		r1-s3		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.3 Search vendor "Juniper" for product "Junos" and version "19.3"		-		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.3 Search vendor "Juniper" for product "Junos" and version "19.3"		r1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.3 Search vendor "Juniper" for product "Junos" and version "19.3"		r1-s1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.3 Search vendor "Juniper" for product "Junos" and version "19.3"		r2		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.3 Search vendor "Juniper" for product "Junos" and version "19.3"		r2-s1		Affected
Juniper Search vendor "Juniper"		Junos Search vendor "Juniper" for product "Junos"				19.3 Search vendor "Juniper" for product "Junos" and version "19.3"		r2-s2		Affected