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CVSS: 7.8EPSS: 0%CPEs: 200EXPL: 0

An Improper Neutralization of Special Elements vulnerability in the download manager of Juniper Networks Junos OS on SRX Series and EX Series allows a locally authenticated attacker with low privileges to take full control over the device. One aspect of this vulnerability is that the attacker needs to be able to execute any of the "request ..." or "show system download ..." commands. This issue affects Juniper Networks Junos OS on SRX Series and EX Series: All versions prior to 19.2R1-S9, 19.2R3-S5; 19.3 versions prior to 19.3R3-S6; 19.4 versions prior to 19.4R3-S8; 20.1 versions prior to 20.1R3-S4; 20.2 versions prior to 20.2R3-S4; 20.3 versions prior to 20.3R3-S3; 20.4 versions prior to 20.4R3-S2, 20.4R3-S3; 21.1 versions prior to 21.1R3-S1; 21.2 versions prior to 21.2R2-S2, 21.2R3; 21.3 versions prior to 21.3R2, 21.3R3; 21.4 versions prior to 21.4R1-S1, 21.4R2. Una vulnerabilidad de Neutralización Inapropiada de Elementos Especiales en el administrador de descargas del Sistema Operativo Junos de Juniper Networks en las series SRX y EX permite a un atacante autenticado localmente con bajos privilegios tomar el control total del dispositivo. Uno de los aspectos de esta vulnerabilidad es que el atacante debe ser capaz de ejecutar cualquiera de los comandos "request ..." o "show system download ...". • https://kb.juniper.net/JSA69725 •

CVSS: 6.5EPSS: 0%CPEs: 11EXPL: 0

An Incorrect Comparison vulnerability in PFE of Juniper Networks Junos OS allows an adjacent unauthenticated attacker to cause a Denial of Service (DoS). On QFX5000 Series, and EX4600 and EX4650 platforms, the fxpc process will crash followed by the FPC reboot upon receipt of a specific hostbound packet. Continued receipt of these specific packets will create a sustained Denial of Service (DoS) condition. This issue only affects Juniper Networks Junos OS 19.4 version 19.4R3-S4. Una vulnerabilidad de comparación incorrecta en PFE del Sistema Operativo Junos de Juniper Networks permite a un atacante adyacente no autenticado causar una Denegación de Servicio (DoS). • https://kb.juniper.net/JSA69707 • CWE-697: Incorrect Comparison •

CVSS: 7.5EPSS: 0%CPEs: 11EXPL: 1

An Uncontrolled Memory Allocation vulnerability leading to a Heap-based Buffer Overflow in the packet forwarding engine (PFE) of Juniper Networks Junos OS allows a network-based unauthenticated attacker to flood the device with traffic leading to a Denial of Service (DoS). The device must be configured with storm control profiling limiting the number of unknown broadcast, multicast, or unicast traffic to be vulnerable to this issue. This issue affects: Juniper Networks Junos OS on QFX5100/QFX5110/QFX5120/QFX5200/QFX5210/EX4600/EX4650 Series; 20.2 version 20.2R1 and later versions prior to 20.2R2. This issue does not affect: Juniper Networks Junos OS versions prior to 20.2R1. Una vulnerabilidad de Asignación de Memoria no Controlada conllevando a un desbordamiento del búfer en la región Heap de la memoria en el motor de reenvío de paquetes (PFE) de Juniper Networks Junos OS permite a un atacante no autenticado basado en la red inundar el dispositivo con tráfico, conllevando a una Denegación de Servicio (DoS). • https://kb.juniper.net/JSA69497 • CWE-122: Heap-based Buffer Overflow CWE-789: Memory Allocation with Excessive Size Value •

CVSS: 7.2EPSS: 0%CPEs: 124EXPL: 0

Due to an Improper Initialization vulnerability in Juniper Networks Junos OS on EX4650 devices, packets received on the management interface (em0) but not destined to the device, may be improperly forwarded to an egress interface, instead of being discarded. Such traffic being sent by a client may appear genuine, but is non-standard in nature and should be considered as potentially malicious. This issue affects: Juniper Networks Junos OS on EX4650 Series: All versions prior to 19.1R3-S8; 19.2 versions prior to 19.2R3-S5; 19.3 versions prior to 19.3R3-S5; 19.4 versions prior to 19.4R3-S7; 20.1 versions prior to 20.1R3-S3; 20.2 versions prior to 20.2R3-S4; 20.3 versions prior to 20.3R3-S3; 20.4 versions prior to 20.4R3-S2; 21.1 versions prior to 21.1R3-S1; 21.2 versions prior to 21.2R3; 21.3 versions prior to 21.3R2; 21.4 versions prior to 21.4R2; 22.1 versions prior to 22.1R1. Debido a una vulnerabilidad de Inicialización Inapropiada en Juniper Networks Junos OS en dispositivos EX4650, los paquetes recibidos en la interfaz de administración (em0), pero que no están destinados al dispositivo, pueden reenviarse incorrectamente a una interfaz de salida, en lugar de descartarse. Este tráfico enviado por un cliente puede parecer genuino, pero no es de naturaleza estándar y debe considerarse como potencialmente malicioso. • https://kb.juniper.net/JSA69494 • CWE-665: Improper Initialization •

CVSS: 7.5EPSS: 0%CPEs: 158EXPL: 0

A vulnerability in the processing of inbound IPv6 packets in Juniper Networks Junos OS on QFX5000 Series and EX4600 switches may cause the memory to not be freed, leading to a packet DMA memory leak, and eventual Denial of Service (DoS) condition. Once the condition occurs, further packet processing will be impacted, creating a sustained Denial of Service (DoS) condition. The following error logs may be observed using the "show heap" command and the device may eventually run out of memory if such packets are received continuously. Jan 12 12:00:00 device-name fpc0 (buf alloc) failed allocating packet buffer Jan 12 12:00:01 device-name fpc0 (buf alloc) failed allocating packet buffer user@device-name> request pfe execute target fpc0 timeout 30 command "show heap" ID Base Total(b) Free(b) Used(b) % Name -- ---------- ----------- ----------- ----------- --- ----------- 0 246fc1a8 536870488 353653752 183216736 34 Kernel 1 91800000 16777216 12069680 4707536 28 DMA 2 92800000 75497472 69997640 5499832 7 PKT DMA DESC 3 106fc000 335544320 221425960 114118360 34 Bcm_sdk 4 97000000 176160768 200 176160568 99 Packet DMA <<<<<<<<<<<<<< 5 903fffe0 20971504 20971504 0 0 Blob This issue affects Juniper Networks Junos OS on QFX5000 Series, EX4600: 18.3R3 versions prior to 18.3R3-S6; 18.4 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-S8, 19.2R3-S3; 19.3 versions prior to 19.3R2-S7, 19.3R3-S4; 19.4 versions prior to 19.4R2-S5, 19.4R3-S6; 20.1 versions prior to 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2-S1, 21.1R3; 21.2 versions prior to 21.2R1-S1, 21.2R2. This issue does not affect Juniper Networks Junos OS: Any versions prior to 17.4R3; 18.1 versions prior to 18.1R3-S6; 18.2 versions prior to 18.2R3; 18.3 versions prior to 18.3R3; 18.4 versions prior to 18.4R2; 19.1 versions prior to 19.1R2. • https://kb.juniper.net/JSA11280 • CWE-401: Missing Release of Memory after Effective Lifetime CWE-755: Improper Handling of Exceptional Conditions •