CVE-2024-21605

Junos OS: SRX 300 Series: Specific link local traffic causes a control plane overload

Severity Score

7.1

*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

An Exposure of Resource to Wrong Sphere vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX 300 Series allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).

Specific valid link-local traffic is not blocked on ports in STP blocked state but is instead sent to the control plane of the device. This leads to excessive resource consumption and in turn severe impact on all control and management protocols of the device.

This issue affects Juniper Networks Junos OS:
* 21.2 version 21.2R3-S3 and later versions earlier than 21.2R3-S6;
* 22.1 version 22.1R3 and later versions earlier than 22.1R3-S4;
* 22.2 version

22.2R2

and later versions earlier than 22.2R3-S2;
* 22.3 version

22.3R2

and later versions earlier than 22.3R3-S1;

* 22.4 versions earlier than 22.4R2-S2, 22.4R3;
* 23.2 versions earlier than 23.2R1-S1, 23.2R2.

This issue does not affect Juniper Networks Junos OS 21.4R1 and later versions of 21.4.

Una vulnerabilidad de exposición de recursos a una esfera incorrecta en el motor de reenvío de paquetes (PFE) de Juniper Networks Junos OS en la serie SRX 300 permite que un atacante adyacente no autenticado provoque una denegación de servicio (DoS). El tráfico de enlace local válido específico no se bloquea en los puertos en estado bloqueado STP, sino que se envía al plano de control del dispositivo. Esto conduce a un consumo excesivo de recursos y, a su vez, a un impacto severo en todos los protocolos de control y gestión del dispositivo. Este problema afecta a Juniper Networks Junos OS: * 21.2 versión 21.2R3-S3 y versiones posteriores anteriores a 21.2R3-S6; * 22.1 versión 22.1R3 y versiones posteriores anteriores a 22.1R3-S4; * 22.2 versión 22.2R2 y versiones posteriores anteriores a 22.2R3-S2; * 22.3 versión 22.3R2 y versiones posteriores anteriores a 22.3R3-S1; * Versiones 22.4 anteriores a 22.4R2-S2, 22.4R3; * Versiones 23.2 anteriores a 23.2R1-S1, 23.2R2. Este problema no afecta a Juniper Networks Junos OS 21.4R1 y versiones posteriores de 21.4.

*Credits: N/A

Attack Vector

Adjacent

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

System

Vulnerable | Subsequent

Confidentiality

None

Integrity

None

Availability

High

Low

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-12-27 CVE Reserved
2024-04-12 CVE Published
2024-04-21 EPSS Updated
2024-08-09 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-668: Exposure of Resource to Wrong Sphere

CAPEC

References (2)

URL	Tag	Source
https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L	Technical Description

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://supportportal.juniper.net/JSA75746	2024-05-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 21.2R3-S3 < 21.2R3-S6 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 21.2R3-S3 < 21.2R3-S6"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.1R3 < 22.1R3-S4 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.1R3 < 22.1R3-S4"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.2R2 < 22.2R3-S2 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.2R2 < 22.2R3-S2"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.3R2 < 22.3R3-S1 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.3R2 < 22.3R3-S1"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.4 < 22.4R2-S2 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.4 < 22.4R2-S2"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.4 < 22.4R3 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.4 < 22.4R3"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 23.2 < 23.2R1-S1 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 23.2 < 23.2R1-S1"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 23.2 < 23.2R2 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 23.2 < 23.2R2"		en		Affected