// For flags

CVE-2024-30403

Junos OS Evolved: When MAC learning happens, and an interface gets flapped, the PFE crashes

Severity Score

7.1
*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

A NULL Pointer Dereference vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).

When Layer 2 traffic is sent through a logical interface, MAC learning happens. If during this process, the interface flaps, an Advanced Forwarding Toolkit manager (evo-aftmand-bt) core is observed. This leads to a PFE restart. The crash reoccurs if the same sequence of events happens, which will lead to a sustained DoS condition.

This issue affects Juniper Networks Junos OS Evolved 23.2-EVO versions earlier than 23.2R1-S1-EVO, 23.2R2-EVO.

Una vulnerabilidad de desreferencia de puntero NULL en el motor de reenvío de paquetes (PFE) de Juniper Networks Junos OS Evolved permite que un atacante adyacente no autenticado provoque una denegación de servicio (DoS). Cuando el tráfico de Capa 2 se envía a través de una interfaz lógica, se produce el aprendizaje de MAC. Si durante este proceso, la interfaz parpadea, se observa un núcleo del administrador Advanced Forwarding Toolkit (evo-aftmand-bt). Esto conduce a un reinicio de PFE. El bloqueo vuelve a ocurrir si ocurre la misma secuencia de eventos, lo que conducirá a una condición DoS sostenida. Este problema afecta a Juniper Networks Junos OS Evolved: versiones 23.2-EVO anteriores a 23.2R1-S1-EVO, 23.2R2-EVO.

*Credits: N/A
CVSS Scores
Attack Vector
Adjacent
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
System
Vulnerable | Subsequent
Confidentiality
None
None
Integrity
None
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
No
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-476: NULL Pointer Dereference
CAPEC
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 Evolved
Search vendor "Juniper Networks" for product "Junos OS Evolved"
 >= 23.2-EVO < 23.2R1-S1-EVO
Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 23.2-EVO < 23.2R1-S1-EVO"
en
Affected
Juniper Networks
Search vendor "Juniper Networks"
 Junos OS Evolved
Search vendor "Juniper Networks" for product "Junos OS Evolved"
 >= 23.2-EVO < 23.2R2-EVO
Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 23.2-EVO < 23.2R2-EVO"
en
Affected