CVE-2024-21586

Junos OS: SRX Series and NFX Series: Specific valid traffic leads to a PFE crash

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX Series and NFX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).

If an affected device receives specific valid traffic destined to the device, it will cause the PFE to crash and restart. Continued receipt and processing of this traffic will create a sustained DoS condition.

This issue affects Junos OS on SRX Series:

* 21.4 versions before 21.4R3-S7.9,
* 22.1 versions before 22.1R3-S5.3,
* 22.2 versions before 22.2R3-S4.11,
* 22.3 versions before 22.3R3,
* 22.4 versions before 22.4R3.

This issue affects Junos OS on NFX Series:

* 21.4 versions before 21.4R3-S8,
* 22.1 versions after 22.1R1,
* 22.2 versions before 22.2R3-S5,
* 22.3 versions before 22.3R3,
* 22.4 versions before 22.4R3.

Junos OS versions prior to 21.4R1 are not affected by this issue.

Una verificación inadecuada de la vulnerabilidad de condiciones inusuales o excepcionales en el motor de reenvío de paquetes (PFE) de Juniper Networks Junos OS en la serie SRX permite que un atacante basado en red no autenticado provoque una denegación de servicio (DoS). Si un dispositivo de la serie SRX recibe tráfico válido específico destinado al dispositivo, provocará que el PFE falle y se reinicie. La recepción y procesamiento continuo de este tráfico creará una condición DoS sostenida. Este problema afecta a Junos OS en la serie SRX: * versiones 21.4 anteriores a 21.4R3-S7.9, * versiones 22.1 anteriores a 22.1R3-S5.3, * versiones 22.2 anteriores a 22.2R3-S4.11, * versiones 22.3 anteriores a 22.3R3, * Versiones 22.4 anteriores a 22.4R3. Las versiones de Junos OS anteriores a la 21.4R1 no se ven afectadas por este problema.

*Credits: N/A

CVSS Scores

Juniper Networksv3.1 7.5

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-12-27 CVE Reserved
2024-07-01 CVE Published
2024-07-02 EPSS Updated
2024-08-01 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-754: Improper Check for Unusual or Exceptional Conditions

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://supportportal.juniper.net/JSA83195	2024-07-18

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"				>= 21.4.0 < 21.4R3-S7.9 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 21.4.0 < 21.4R3-S7.9"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.1.0 < 22.1R3-S5.3 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.1.0 < 22.1R3-S5.3"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.2.0 < 22.2R3-S4.11 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.2.0 < 22.2R3-S4.11"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.3 < 22.3R3 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.3 < 22.3R3"		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"				>= 21.4 < 21.4R3-S8 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 21.4 < 21.4R3-S8"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				22.1 Search vendor "Juniper Networks" for product "Junos OS" and version "22.1"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.2 < 22.2R3-S5 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.2 < 22.2R3-S5"		en		Affected
Juniper Networks Search vendor "Juniper Networks"		Junos OS Search vendor "Juniper Networks" for product "Junos OS"				>= 22.3 < 22.3R3 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.3 < 22.3R3"		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