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CVE-2024-39531

Estado: AnalizadaAlta (8.7)—

An Improper Handling of Values vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows a network-based, unauthenticated attacker to cause a Denial-of-Service (DoS).

If a value is configured for DDoS bandwidth or burst parameters for any protocol in a queue, all protocols which share the same queue will have their bandwidth or burst value changed to the new value. If, for example, OSPF was configured with a certain bandwidth value, ISIS would also be limited to this value.

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So inadvertently either the control plane is open for a high level of specific traffic which was supposed to be limited to a lower value, or the limit for a certain protocol is so low that chances to succeed with a volumetric DoS attack are significantly increased.

This issue affects Junos OS Evolved on ACX 7000 Series:

versions

before 23.4R1-S1-EVO, 23.4R2-EVO.

Detalles técnicos trazas, registros y código del informe original
  *  All versions before 21.4R3-S7-EVO,
  *  22.1 versions before 22.1R3-S6-EVO, 
  *  22.2 versions before 22.2R3-S3-EVO,
  *  22.3 versions before 22.3R3-S3-EVO, 
  *  22.4 versions before 22.4R3-S2-EVO,
  *  23.2 versions before 23.2R2-EVO,
  *  23.4

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

CWE

Referencias

JSON original (NVD)

Mostrar
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      "value": "An Improper Handling of Values vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows a network-based, unauthenticated attacker to cause a Denial-of-Service (DoS).\n\nIf a value is configured for DDoS bandwidth or burst parameters for any protocol in\na queue, all protocols which share the same queue will have\ntheir bandwidth or burst value changed to the new value. If, for example, OSPF was configured with a certain bandwidth value, ISIS would also be limited to this value. So inadvertently either the control plane is open for a high level of specific traffic which was supposed to be limited to a lower value, or the limit for a certain protocol is so low that chances to succeed with a volumetric DoS attack are significantly increased. \n\n\n\n\nThis issue affects Junos OS Evolved on ACX 7000 Series:\n\n\n\n  *  All versions before 21.4R3-S7-EVO,\n  *  22.1 versions before 22.1R3-S6-EVO, \n  *  22.2 versions before 22.2R3-S3-EVO,\n  *  22.3 versions before 22.3R3-S3-EVO, \n  *  22.4 versions before 22.4R3-S2-EVO,\n  *  23.2 versions before 23.2R2-EVO,\n  *  23.4 \n\nversions \n\nbefore 23.4R1-S1-EVO, 23.4R2-EVO."
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      "value": "Una vulnerabilidad de manejo inadecuado de valores en Packet Forwarding Engine (PFE) de Juniper Networks Junos OS evolucionado en la serie ACX 7000 permite que un atacante no autenticado basado en red provoque una denegación de servicio (DoS). Si se configura un valor para el ancho de banda DDoS o los parámetros de ráfaga para cualquier protocolo en una cola, todos los protocolos que comparten la misma cola cambiarán su ancho de banda o valor de ráfaga al nuevo valor. Si, por ejemplo, OSPF estuviera configurado con un determinado valor de ancho de banda, ISIS también estaría limitado a este valor. Entonces, sin darse cuenta, o el plano de control está abierto para un alto nivel de tráfico específico que se suponía estaba limitado a un valor más bajo, o el límite para un determinado protocolo es tan bajo que las posibilidades de éxito con un ataque DoS volumétrico aumentan significativamente. Este problema afecta a Junos OS Evolved en la serie ACX 7000: * Todas las versiones anteriores a 21.4R3-S7-EVO, * Versiones 22.1 anteriores a 22.1R3-S6-EVO, * Versiones 22.2 anteriores a 22.2R3-S3-EVO, * Versiones 22.3 anteriores a 22.3R3 -S3-EVO, *22.4 versiones anteriores a 22.4R3-S2-EVO, *23.2 versiones anteriores a 23.2R2-EVO, *23.4 versiones anteriores a 23.4R1-S1-EVO, 23.4R2-EVO."
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