CVSS: 5.5EPSS: 0%CPEs: 81EXPL: 0CVE-2023-44193 – Junos OS: MX Series: An FPC crash is observed when CFM is enabled in a VPLS scenario and a specific LDP related command is run
https://notcve.org/view.php?id=CVE-2023-44193
An Improper Release of Memory Before Removing Last Reference vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a local, low privileged attacker to cause an FPC crash, leading to Denial of Service (DoS). On all Junos MX Series with MPC1 - MPC9, LC480, LC2101, MX10003, and MX80, when Connectivity-Fault-Management (CFM) is enabled in a VPLS scenario, and a specific LDP related command is run, an FPC will crash and reboot. Continued execution of this specific LDP command can lead to sustained Denial of Service condition. This issue affects: Juniper Networks Junos OS on MX Series: * All versions prior to 20.4R3-S7; * 21.1 versions prior to 21.1R3-S5; * 21.2 versions prior to 21.2R3-S4; * 21.3 versions prior to 21.3R3-S4; * 21.4 versions prior to 21.4R3-S3; * 22.1 versions prior to 22.1R3-S1; * 22.2 versions prior to 22.2R2-S1, 22.2R3; * 22.3 versions prior to 22.3R1-S2, 22.3R2. Una vulnerabilidad de liberación inadecuada de memoria antes de eliminar la última referencia en Packet Forwarding Engine (PFE) de Juniper Networks Junos OS permite que un atacante local con pocos privilegios provoque una falla del FPC, lo que lleva a una Denegación de Servicio (DoS). En todas las series Junos MX con MPC1 - MPC9, LC480, LC2101, MX10003 y MX80, cuando Connectivity-Fault-Management (CFM) está habilitada en un escenario VPLS y se ejecuta un comando relacionado con LDP específico, un FPC fallará y se reiniciará. La ejecución continua de este comando LDP específico puede provocar una condición sostenida de Denegación de Servicio. • https://supportportal.juniper.net/JSA73157 • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 7.5EPSS: 0%CPEs: 86EXPL: 0CVE-2023-44192 – Junos OS: QFX5000 Series: DMA memory leak is observed when specific DHCP packets are transmitted over pseudo-VTEP
https://notcve.org/view.php?id=CVE-2023-44192
An Improper Input Validation vulnerability in the Packet Forwarding Engine of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause memory leak, leading to Denial of Service (DoS). On all Junos OS QFX5000 Series platforms, when pseudo-VTEP (Virtual Tunnel End Point) is configured under EVPN-VXLAN scenario, and specific DHCP packets are transmitted, DMA memory leak is observed. Continuous receipt of these specific DHCP packets will cause memory leak to reach 99% and then cause the protocols to stop working and traffic is impacted, leading to Denial of Service (DoS) condition. A manual reboot of the system recovers from the memory leak. To confirm the memory leak, monitor for "sheaf:possible leak" and "vtep not found" messages in the logs. This issue affects: Juniper Networks Junos OS QFX5000 Series: * All versions prior to 20.4R3-S6; * 21.1 versions prior to 21.1R3-S5; * 21.2 versions prior to 21.2R3-S5; * 21.3 versions prior to 21.3R3-S4; * 21.4 versions prior to 21.4R3-S3; * 22.1 versions prior to 22.1R3-S2; * 22.2 versions prior to 22.2R2-S2, 22.2R3; * 22.3 versions prior to 22.3R2-S1, 22.3R3; * 22.4 versions prior to 22.4R1-S2, 22.4R2. Una vulnerabilidad de validación de entrada incorrecta en Packet Forwarding Engine (PFE) de Juniper Networks Junos OS permite que un atacante basado en red no autenticado cause una pérdida de memoria, lo que lleva a una Denegación de Servicio (DoS). En todas las plataformas de la serie Junos OS QFX5000, cuando se configura pseudo-VTEP (Virtual Tunnel End Point) en el escenario EVPN-VXLAN y se transmiten paquetes DHCP específicos, se observa una pérdida de memoria DMA. • https://supportportal.juniper.net/JSA73156 • CWE-20: Improper Input Validation CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 7.5EPSS: 0%CPEs: 92EXPL: 0CVE-2023-44191 – Junos OS: QFX5000 Series and EX4000 Series: Denial of Service (DoS) on a large scale VLAN due to PFE hogging
https://notcve.org/view.php?id=CVE-2023-44191
An Allocation of Resources Without Limits or Throttling vulnerability in Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). On all Junos OS QFX5000 Series and EX4000 Series platforms, when a high number of VLANs are configured, a specific DHCP packet will cause PFE hogging which will lead to dropping of socket connections. This issue affects: Juniper Networks Junos OS on QFX5000 Series and EX4000 Series * 21.1 versions prior to 21.1R3-S5; * 21.2 versions prior to 21.2R3-S5; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3-S4; * 22.1 versions prior to 22.1R3-S3; * 22.2 versions prior to 22.2R3-S1; * 22.3 versions prior to 22.3R2-S2, 22.3R3; * 22.4 versions prior to 22.4R2. This issue does not affect Juniper Networks Junos OS versions prior to 21.1R1 Una vulnerabilidad de asignación de recursos sin límites ni limitación en Juniper Networks Junos OS permite que un atacante no autenticado basado en la red provoque una Denegación de Servicio (DoS). En todas las plataformas Junos OS QFX5000 Series y EX4000 Series, cuando se configura una gran cantidad de VLAN, un paquete DHCP específico provocará un acaparamiento de PFE, lo que provocará la caída de las conexiones del socket. Este problema afecta a: Juniper Networks Junos OS en las series QFX5000 y EX4000 * versiones 21.1 anteriores a 21.1R3-S5; * Versiones 21.2 anteriores a 21.2R3-S5; * Versiones 21.3 anteriores a 21.3R3-S5; * Versiones 21.4 anteriores a 21.4R3-S4; * Versiones 22.1 anteriores a 22.1R3-S3; * Versiones 22.2 anteriores a 22.2R3-S1; * Versiones 22.3 anteriores a 22.3R2-S2, 22.3R3; * Versiones 22.4 anteriores a 22.4R2. Este problema no afecta a las versiones de Juniper Networks Junos OS anteriores a 21.1R1. • https://supportportal.juniper.net/JSA73155 • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 7.5EPSS: 0%CPEs: 129EXPL: 0CVE-2023-44185 – Junos OS and Junos OS Evolved: In an BGP scenario RPD crashes upon receiving and processing a specific malformed ISO VPN BGP UPDATE packet
https://notcve.org/view.php?id=CVE-2023-44185
An Improper Input Validation vulnerability in the routing protocol daemon (rpd) of Juniper Networks allows an attacker to cause a Denial of Service (DoS )to the device upon receiving and processing a specific malformed ISO VPN BGP UPDATE packet. Continued receipt of this packet will cause a sustained Denial of Service condition. This issue affects: * Juniper Networks Junos OS: * All versions prior to 20.4R3-S6; * 21.1 versions prior to 21.1R3-S5; * 21.2 versions prior to 21.2R3-S4; * 21.3 versions prior to 21.3R3-S3; * 21.4 versions prior to 21.4R3-S3; * 22.1 versions prior to 22.1R2-S2, 22.1R3; * 22.2 versions prior to 22.2R2-S1, 22.2R3; * 22.3 versions prior to 22.3R1-S2, 22.3R2. Juniper Networks Junos OS Evolved: * All versions prior to 20.4R3-S6-EVO; * 21.1-EVO version 21.1R1-EVO and later versions prior to 21.2R3-S4-EVO; * 21.3-EVO versions prior to 21.3R3-S3-EVO; * 21.4-EVO versions prior to 21.4R3-S3-EVO; * 22.1-EVO versions prior to 22.1R3-EVO; * 22.2-EVO versions prior to 22.2R2-S1-EVO, 22.2R3-EVO; * 22.3-EVO versions prior to 22.3R1-S2-EVO, 22.3R2-EVO. Una vulnerabilidad de validación de entrada incorrecta en el Routing Protocol Daemon (rpd) de Juniper Networks permite a un atacante causar una Denegación de Servicio (DoS) al dispositivo al recibir y procesar un paquete de ACTUALIZACIÓN BGP de VPN ISO con formato incorrecto específico. La recepción continua de este paquete provocará una condición sostenida de Denegación de Servicio. Este problema afecta a: * Juniper Networks Junos OS: * Todas las versiones anteriores a 20.4R3-S6; * Versiones 21.1 anteriores a 21.1R3-S5; * Versiones 21.2 anteriores a 21.2R3-S4; * Versiones 21.3 anteriores a 21.3R3-S3; * Versiones 21.4 anteriores a 21.4R3-S3; * Versiones 22.1 anteriores a 22.1R2-S2, 22.1R3; * Versiones 22.2 anteriores a 22.2R2-S1, 22.2R3; * Versiones 22.3 anteriores a 22.3R1-S2, 22.3R2. Juniper Networks Junos OS Evolved: * Todas las versiones anteriores a 20.4R3-S6-EVO; * 21.1-EVO versión 21.1R1-EVO y versiones posteriores anteriores a 21.2R3-S4-EVO; * Versiones 21.3-EVO anteriores a 21.3R3-S3-EVO; * Versiones 21.4-EVO anteriores a 21.4R3-S3-EVO; * Versiones 22.1-EVO anteriores a 22.1R3-EVO; * Versiones 22.2-EVO anteriores a 22.2R2-S1-EVO, 22.2R3-EVO; * Versiones 22.3-EVO anteriores a 22.3R1-S2-EVO, 22.3R2-EVO. • https://supportportal.juniper.net/JSA73146 • CWE-20: Improper Input Validation •
CVSS: 6.5EPSS: 0%CPEs: 109EXPL: 0CVE-2023-44184 – Junos OS and Junos OS Evolved: High CPU load due to specific NETCONF command
https://notcve.org/view.php?id=CVE-2023-44184
An Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in the management daemon (mgd) process of Juniper Networks Junos OS and Junos OS Evolved allows a network-based authenticated low-privileged attacker, by executing a specific command via NETCONF, to cause a CPU Denial of Service to the device's control plane. This issue affects: Juniper Networks Junos OS * All versions prior to 20.4R3-S7; * 21.2 versions prior to 21.2R3-S5; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3-S4; * 22.1 versions prior to 22.1R3-S2; * 22.2 versions prior to 22.2R3; * 22.3 versions prior to 22.3R2-S1, 22.3R3; * 22.4 versions prior to 22.4R1-S2, 22.4R2. Juniper Networks Junos OS Evolved * All versions prior to 21.4R3-S4-EVO; * 22.1 versions prior to 22.1R3-S2-EVO; * 22.2 versions prior to 22.2R3-EVO; * 22.3 versions prior to 22.3R3-EVO; * 22.4 versions prior to 22.4R2-EVO. An indicator of compromise can be seen by first determining if the NETCONF client is logged in and fails to log out after a reasonable period of time and secondly reviewing the WCPU percentage for the mgd process by running the following command: mgd process example: user@device-re#> show system processes extensive | match "mgd|PID" | except last PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND 92476 root 100 0 500M 89024K CPU3 3 57.5H 89.60% mgd <<<<<<<<<<< review the high cpu percentage. Example to check for NETCONF activity: While there is no specific command that shows a specific session in use for NETCONF, you can review logs for UI_LOG_EVENT with "client-mode 'netconf'" For example: mgd[38121]: UI_LOGIN_EVENT: User 'root' login, class 'super-user' [38121], ssh-connection '10.1.1.1 201 55480 10.1.1.2 22', client-mode 'netconf' Una vulnerabilidad de restricción inadecuada de operaciones dentro de los límites de un búfer de memoria en el proceso del Management Daemon (mgd) de Juniper Networks Junos OS y Junos OS Evolved permite a un atacante con pocos privilegios autenticado basado en red, ejecutando un comando específico a través de NETCONF, para provocar una Denegación de Servicio (DoS) de la CPU en el plano de control del dispositivo. Este problema afecta a: Juniper Networks Junos OS * Todas las versiones anteriores a 20.4R3-S7; * Versiones 21.2 anteriores a 21.2R3-S5; * Versiones 21.3 anteriores a 21.3R3-S5; * Versiones 21.4 anteriores a 21.4R3-S4; * Versiones 22.1 anteriores a 22.1R3-S2; * Versiones 22.2 anteriores a 22.2R3; * Versiones 22.3 anteriores a 22.3R2-S1, 22.3R3; * Versiones 22.4 anteriores a 22.4R1-S2, 22.4R2. Juniper Networks Junos OS Evolved * Todas las versiones anteriores a 21.4R3-S4-EVO; * Versiones 22.1 anteriores a 22.1R3-S2-EVO; * Versiones 22.2 anteriores a 22.2R3-EVO; * Versiones 22.3 anteriores a 22.3R3-EVO; * Versiones 22.4 anteriores a 22.4R2-EVO. Se puede ver un indicador de compromiso determinando primero si el cliente NETCONF ha iniciado sesión y no logra cerrar sesión después de un período de tiempo razonable y, en segundo lugar, revisando el porcentaje de WCPU para el proceso mgd ejecutando el siguiente comando: mgd process example: user@device-re#> show system processes extensive | match "mgd|PID" | excepto el último PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND 92476 root 100 0 500M 89024K CPU3 3 57.5H 89.60% mgd <<<<<<<<<<< revise el alto porcentaje de CPU. Ejemplo para comprobar la actividad de NETCONF: si bien no existe un comando específico que muestre una sesión específica en uso para NETCONF, puede revisar los registros de UI_LOG_EVENT con "client-mode 'netconf'". • https://supportportal.juniper.net/JSA73147 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •