CVE-2024-30389

Junos OS: EX4300 Series: Firewall filter not blocking egress traffic

Severity Score

6.9

*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

An Incorrect Behavior Order vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on EX4300 Series allows an unauthenticated, network-based attacker to cause an integrity impact to networks downstream of the vulnerable device.

When an output firewall filter is applied to an interface it doesn't recognize matching packets but permits any traffic.
This issue affects Junos OS 21.4 releases from 21.4R1 earlier than 21.4R3-S6.
This issue does not affect Junos OS releases earlier than 21.4R1.

Una vulnerabilidad de orden de comportamiento incorrecto en el motor de reenvío de paquetes (PFE) de Juniper Networks Junos OS en la serie EX4300 permite que un atacante basado en red no autenticado cause un impacto en la integridad de las redes posteriores al dispositivo vulnerable. Cuando se aplica un filtro de firewall de salida a una interfaz, no reconoce los paquetes coincidentes pero permite cualquier tráfico. Este problema afecta a las versiones Junos OS 21.4 desde 21.4R1 anteriores a 21.4R3-S6. Este problema no afecta a las versiones de Junos OS anteriores a la 21.4R1.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

System

Vulnerable | Subsequent

Confidentiality

None

Integrity

None

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-03-26 CVE Reserved
2024-04-12 CVE Published
2024-04-21 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-696: Incorrect Behavior Order

CAPEC

References (2)

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

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://supportportal.juniper.net/JSA79185	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"				>= 21.4 < 21.4R3-S6 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 21.4 < 21.4R3-S6"		en		Affected