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CVSS: 7.4EPSS: 0%CPEs: 112EXPL: 1

An Improper Certificate Validation weakness in the Juniper Networks Junos OS allows an attacker to perform Person-in-the-Middle (PitM) attacks when a system script is fetched from a remote source at a specified HTTPS URL, which may compromise the integrity and confidentiality of the device. The following command can be executed by an administrator via the CLI to refresh a script from a remote location, which is affected from this vulnerability: >request system scripts refresh-from (commit | event | extension-service | op | snmp) file filename url <https-url> This issue affects: Juniper Networks Junos OS All versions prior to 18.4R2-S9, 18.4R3-S9; 19.1 versions prior to 19.1R2-S3, 19.1R3-S7; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R3-S4; 19.4 versions prior to 19.4R3-S7; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2; 21.1 versions prior to 21.1R1-S1, 21.1R2. Una debilidad de comprobación de certificados inapropiada en el Sistema Operativo Junos de Juniper Networks permite a un atacante llevar a cabo ataques de tipo Person-in-the-Middle (PitM) cuando es obtenida una secuencia de comandos del sistema desde una fuente remota en una URL HTTPS especificada, que puede comprometer la integridad y la confidencialidad del dispositivo. El siguiente comando puede ser ejecutado por un administrador por medio de la CLI para refrescar un script desde una ubicación remota, lo cual está afectado por esta vulnerabilidad: )request system scripts refresh-from (commit | event | extension-service | op | snmp) file filename url (https-url) Este problema afecta a: Juniper Networks Junos OS Todas las versiones anteriores a 18.4R2-S9, 18.4R3-S9; 19.1 versiones anteriores a 19.1R2-S3, 19.1R3-S7; 19.2 versiones anteriores a 19.2R1-S7, 19.2R3-S3; 19.3 versiones anteriores a 19.3R3-S4; 19. 4 versiones anteriores a 19.4R3-S7; 20.1 versiones anteriores a 20.1R2-S2, 20.1R3; 20.2 versiones anteriores a 20.2R3; versiones 20.3 anteriores a 20.3R2-S1, 20.3R3; 20.4 versiones anteriores a 20.4R2; 21.1 versiones anteriores a 21.1R1-S1, 21.1R2 • https://kb.juniper.net/JSA11264 • CWE-295: Improper Certificate Validation CWE-300: Channel Accessible by Non-Endpoint CWE-358: Improperly Implemented Security Check for Standard •

CVSS: 7.5EPSS: 0%CPEs: 104EXPL: 0

An Insufficient Algorithmic Complexity combined with an Allocation of Resources Without Limits or Throttling vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series and MX Series with SPC3 allows an unauthenticated network attacker to cause latency in transit packet processing and even packet loss. If transit traffic includes a significant percentage (> 5%) of fragmented packets which need to be reassembled, high latency or packet drops might be observed. This issue affects Juniper Networks Junos OS on SRX Series, MX Series with SPC3: All versions prior to 18.2R3; 18.3 versions prior to 18.3R3; 18.4 versions prior to 18.4R2-S9, 18.4R3; 19.1 versions prior to 19.1R2; 19.2 versions prior to 19.2R1-S1, 19.2R2. Una Complejidad Algorítmica no Suficiente Combinada con una vulnerabilidad de Asignación de Recursos sin Límites o Estrangulamiento en el demonio de procesamiento de flujos (flowd) de Junos OS de Juniper Networks en las series SRX y MX con SPC3 permite a un atacante de red no autenticado causar latencia en el procesamiento de paquetes en tránsito e incluso la pérdida de paquetes. Si el tráfico de tránsito incluye un porcentaje significativo (más del 5%) de paquetes fragmentados que deben volver a ensamblarse, puede observarse una alta latencia o pérdidas de paquetes. • https://kb.juniper.net/JSA11261 • CWE-407: Inefficient Algorithmic Complexity CWE-770: Allocation of Resources Without Limits or Throttling •

CVSS: 5.9EPSS: 0%CPEs: 227EXPL: 0

A Protection Mechanism Failure vulnerability in the J-Web HTTP service of Juniper Networks Junos OS allows a remote unauthenticated attacker to perform Person-in-the-Middle (PitM) attacks against the device. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S20; 15.1 versions prior to 15.1R7-S11; 18.3 versions prior to 18.3R3-S6; 18.4 versions prior to 18.4R3-S10; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R3-S4; 19.3 versions prior to 19.3R3-S4; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R3-S2; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R2. Una vulnerabilidad de fallo del mecanismo de protección en el servicio J-Web HTTP de Juniper Networks Junos OS permite a un atacante remoto no autenticado llevar a cabo ataques de tipo Person-in-the-Middle (PitM) contra el dispositivo. Este problema afecta a: Juniper Networks Junos OS 12.3 versiones anteriores a 12.3R12-S20; 15.1 versiones anteriores a 15.1R7-S11; versiones 18.3 anteriores a 18.3R3-S6; versiones 18.4 anteriores a 18.4R3-S10; versiones 19.1 anteriores a 19.1R3-S7; versiones 19.2 anteriores a 19.2R3-S4; 19. 3 versiones anteriores a 19.3R3-S4; versiones 19.4 anteriores a 19.4R3-S6; versiones 20.1 anteriores a 20.1R3-S2; versiones 20.2 anteriores a 20.2R3-S3; versiones 20.3 anteriores a 20.3R3-S1; versiones 20.4 anteriores a 20.4R3; versiones 21.1 anteriores a 21.1R3; 21.2 versiones anteriores a 21.2R2 • https://kb.juniper.net/JSA11254 • CWE-300: Channel Accessible by Non-Endpoint CWE-311: Missing Encryption of Sensitive Data CWE-325: Missing Cryptographic Step CWE-693: Protection Mechanism Failure •

CVSS: 8.8EPSS: 0%CPEs: 211EXPL: 0

An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in J-Web of Juniper Networks Junos OS allows any low-privileged authenticated attacker to elevate their privileges to root. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S19; 15.1 versions prior to 15.1R7-S10; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R3-S3; 19.4 versions prior to 19.4R3-S5; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2. Una vulnerabilidad de Limitación Inapropiada de un Nombre de Ruta a un Directorio Restringido ("Salto de Ruta") en J-Web de Juniper Networks Junos OS permite a cualquier atacante autenticado poco privilegiado elevarlos a root. Este problema afecta a: Juniper Networks Junos OS 12.3 versiones anteriores a 12.3R12-S19; 15.1 versiones anteriores a 15.1R7-S10; versiones 18.3 anteriores a 18.3R3-S5; versiones 18.4 anteriores a 18.4R3-S9; versiones 19.1 anteriores a 19.1R3-S6; versiones 19.2 anteriores a 19.2R1-S7, 19.2R3-S3; 19. 3 versiones anteriores a 19.3R3-S3; versiones 19.4 anteriores a 19.4R3-S5; versiones 20.1 anteriores a 20.1R2-S2, 20.1R3-S1; versiones 20.2 anteriores a 20.2R3-S2; versiones 20.3 anteriores a 20.3R3; versiones 20.4 anteriores a 20.4R2-S1, 20.4R3; versiones 21.1 anteriores a 21.1R1-S1, 21.1R2 • https://kb.juniper.net/JSA11253 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •

CVSS: 5.5EPSS: 0%CPEs: 256EXPL: 0

An Incorrect Permission Assignment for Critical Resource vulnerability of a certain file in the filesystem of Junos OS allows a local authenticated attacker to cause routing process daemon (RPD) to crash and restart, causing a Denial of Service (DoS). Repeated actions by the attacker will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S9; 17.3 versions prior to 17.3R3-S12; 17.4 versions prior to 17.4R2-S13, 17.4R3-S5; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R2-S8, 18.4R3-S7; 19.1 versions prior to 19.1R2-S3, 19.1R3-S5; 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R1-S1, 20.4R2. Una vulnerabilidad de Asignación Incorrecta de Permisos para Recursos Críticos de un determinado archivo del sistema de archivos de Junos OS permite a un atacante local autenticado causar el bloqueo y el reinicio del demonio de proceso de enrutamiento (RPD), causando una Denegación de Servicio (DoS). Las acciones repetidas del atacante crearán una condición de Denegación de Servicio (DoS) sostenida. • https://kb.juniper.net/JSA11242 • CWE-732: Incorrect Permission Assignment for Critical Resource •