CVE-2020-1683
Estado: ModificadaAlta (7.5)—
En dispositivos Juniper Networks Junos OS, una encuesta de SNMP OID específica causa un filtrado de la memoria que, con el tiempo, conlleva a un bloqueo del kernel (vmcore). Antes del fallo del kernel, otros procesos pueden estar afectados, como el fallo al establecer una conexión SSH con el dispositivo. El administrador puede monitorear el resultado del siguiente comando para comprobar si existe un filtrado de memoria causado por este problema: user@device> show system virtual-memory | match "pfe_ipc|kmem" pfe_ipc 147 5K - 164352 16,32,64,8192 <-- increasing vm.kmem_map_free: 127246336 <-- decreasing pfe_ipc 0 0K - 18598 32,8192 vm.kmem_map_free: 134582272 Este problema afecta a Juniper Networks Junos OS: versión 17.4R3; 18.1 versión 18.1R3-S5 y versiones posteriores anteriores a 18.1R3-S10; 18.2 versión 18.2R3 y versiones posteriores anteriores a 18.2R3-S3; 18.2X75 versión 18.2X75-D420, 18.2X75-D50 y versiones posteriores anteriores a 18. 2X75-D430, 18.2X75-D53, 18.2X75-D60; 18.3 versión 18.3R3 y versiones posteriores anteriores a 18.3R3-S2; 18.4 versión 18.4R1-S4, 18.4R2 y versiones posteriores anteriores a 18.4R2-S5, 18.4R3-S1; 19.1 versión 19.1R2 y versiones posteriores anteriores a 19.1R2-S2, 19.1R3; 19.2 versión 19.2R1 y versiones posteriores anteriores a 19.2R1-S5, 19.2R2; 19.3 versiones anteriores a 19.3R2-S5, 19.3R3; 19.4 versiones anteriores a 19.4R1-S3, 19.4R2. Este problema no afecta a Juniper Networks Junos OS anterior a versión 17.4R3
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.06%
- Percentil entre todas las CVEs puntuadas: 64
- 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-401
- CWE-401
Referencias
JSON original (NVD)
Mostrar
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