CVE-2024-39530
Estado: ModificadaAlta (8.7)—
An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis management daemon (chassisd) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause a
Denial-of-Service (DoS).
If an attempt is made to access specific sensors on platforms not supporting these sensors, either via GRPC or netconf, chassisd will crash and restart leading to a restart of all FPCs and thereby a complete outage.
This issue affects Junos OS:
This issue does not affect Junos OS versions earlier than 21.4.
Detalles técnicos trazas, registros y código del informe original
* 21.4 versions from 21.4R3 before 21.4R3-S5, * 22.1 versions from 22.1R3 before 22.1R3-S4, * 22.2 versions from 22.2R2 before 22.2R3, * 22.3 versions from 22.3R1 before 22.3R2-S2, 22.3R3, * 22.4 versions from 22.4R1 before 22.4R2.
CVSS
- Versión: 4.0
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Puntuación base: 8.7
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.48%
- Percentil entre todas las CVEs puntuadas: 39
- Fecha de la puntuación: 7/10/2026
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
- CWE-754
- CWE-754
Referencias
JSON original (NVD)
Mostrar
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"value": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis management daemon (chassisd) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause a \n\nDenial-of-Service (DoS).\n\nIf an attempt is made to access specific sensors on platforms not supporting these sensors, either via GRPC or netconf, chassisd will crash and restart leading to a restart of all FPCs and thereby a complete outage.\n\nThis issue affects Junos OS:\n\n\n\n * 21.4 versions from 21.4R3 before 21.4R3-S5,\n * 22.1 versions from 22.1R3 before 22.1R3-S4,\n * 22.2 versions from 22.2R2 before 22.2R3,\n * 22.3 versions from 22.3R1 before 22.3R2-S2, 22.3R3,\n * 22.4 versions from 22.4R1 before 22.4R2.\n\n\nThis issue does not affect Junos OS versions earlier than 21.4."
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"value": "Una vulnerabilidad de verificación inadecuada de condiciones inusuales o excepcionales en el daemon de administración de chassis (chassisd) de Juniper Networks Junos OS permite que un atacante no autenticado basado en la red provoque una denegación de servicio (DoS). Si se intenta acceder a sensores específicos en plataformas que no admiten estos sensores, ya sea a través de GRPC o netconf, chasisd fallará y se reiniciará, lo que provocará un reinicio de todos los FPC y, por lo tanto, una interrupción completa. Este problema afecta a Junos OS: * versiones 21.4 desde 21.4R3 anteriores a 21.4R3-S5, * versiones 22.1 desde 22.1R3 anteriores a 22.1R3-S4, * versiones 22.2 desde 22.2R2 anteriores a 22.2R3, * versiones 22.3 desde 22.3R1 anteriores a 22.3R2- Versiones S2, 22.3R3, * 22.4 desde 22.4R1 antes de 22.4R2. Este problema no afecta a las versiones de Junos OS anteriores a la 21.4."
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