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CVSS: 6.5EPSS: 0%CPEs: 109EXPL: 0

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#&gt; 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 &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt; 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 •

CVSS: 6.5EPSS: 0%CPEs: 250EXPL: 0

An Improper Input Validation vulnerability in the VxLAN packet forwarding engine (PFE) of Juniper Networks Junos OS on QFX5000 Series, EX4600 Series devices allows an unauthenticated, adjacent attacker, sending two or more genuine packets in the same VxLAN topology to possibly cause a DMA memory leak to occur under various specific operational conditions. The scenario described here is the worst-case scenario. There are other scenarios that require operator action to occur. An indicator of compromise may be seen when multiple devices indicate that FPC0 has gone missing when issuing a show chassis fpc command for about 10 to 20 minutes, and a number of interfaces have also gone missing. Use the following command to determine if FPC0 has gone missing from the device. show chassis fpc detail This issue affects: Juniper Networks Junos OS on QFX5000 Series, EX4600 Series: * 18.4 version 18.4R2 and later versions prior to 20.4R3-S8; * 21.1 version 21.1R1 and later versions prior to 21.2R3-S6; * 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. Una vulnerabilidad de validación de entrada incorrecta en Packet Forwarding Engine (PFE) VxLAN de Juniper Networks Junos OS en dispositivos de las series QFX5000 y EX4600 permite que un atacante adyacente no autenticado envíe dos o más paquetes genuinos en la misma topología VxLAN para causar posiblemente una memoria DMA que se produzca una fuga en diversas condiciones operativas específicas. El escenario descrito aquí es el peor de los casos. • https://supportportal.juniper.net/JSA73148 https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/topic-map/sdn-vxlan.html https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/redundant-trunk-groups.html • CWE-20: Improper Input Validation CWE-401: Missing Release of Memory after Effective Lifetime •

CVSS: 5.5EPSS: 0%CPEs: 151EXPL: 0

A Stack-based Buffer Overflow vulnerability in the CLI command of Juniper Networks Junos OS allows a low privileged attacker to execute a specific CLI commands leading to Denial of Service. Repeated actions by the attacker will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks: Junos OS * All versions prior to 19.1R3-S10; * 19.2 versions prior to 19.2R3-S7; * 19.3 versions prior to 19.3R3-S8; * 19.4 versions prior to 19.4R3-S12; * 20.2 versions prior to 20.2R3-S8; * 20.4 versions prior to 20.4R3-S8; * 21.2 versions prior to 21.2R3-S6; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3-S5; * 22.1 versions prior to 22.1R3-S3; * 22.2 versions prior to 22.2R3-S2; * 22.3 versions prior to 22.3R3-S1; * 22.4 versions prior to 22.4R2-S1; * 23.2 versions prior to 23.2R2. Una vulnerabilidad de desbordamiento de búfer en el comando CLI de Juniper Networks Junos OS permite a un atacante con pocos privilegios ejecutar comandos CLI específicos que conducen a una Denegación de Servicio. Las acciones repetidas del atacante crearán una condición sostenida de Denegación de Servicio (DoS). Este problema afecta a Juniper Networks: Junos OS * Todas las versiones anteriores a 19.1R3-S10; * Versiones 19.2 anteriores a 19.2R3-S7; * Versiones 19.3 anteriores a 19.3R3-S8; * Versiones 19.4 anteriores a 19.4R3-S12; * Versiones 20.2 anteriores a 20.2R3-S8; * Versiones 20.4 anteriores a 20.4R3-S8; * Versiones 21.2 anteriores a 21.2R3-S6; * Versiones 21.3 anteriores a 21.3R3-S5; * Versiones 21.4 anteriores a 21.4R3-S5; * Versiones 22.1 anteriores a 22.1R3-S3; * Versiones 22.2 anteriores a 22.2R3-S2; * Versiones 22.3 anteriores a 22.3R3-S1; * Versiones 22.4 anteriores a 22.4R2-S1; * Versiones 23.2 anteriores a 23.2R2. • https://supportportal.juniper.net/JSA73140 • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •

CVSS: 5.5EPSS: 0%CPEs: 150EXPL: 0

A Stack-based Buffer Overflow vulnerability in the CLI command of Juniper Networks Junos OS allows a low privileged attacker to execute a specific CLI commands leading to Denial of Service. Repeated actions by the attacker will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks: Junos OS: * All versions prior to 20.4R3-S8; * 21.2 versions prior to 21.2R3-S6; * 21.3 versions prior to 21.3R3-S5; * 22.1 versions prior to 22.1R3-S3; * 22.3 versions prior to 22.3R3; * 22.4 versions prior to 22.4R3. Una vulnerabilidad de desbordamiento de búfer en el comando CLI de Juniper Networks Junos OS permite a un atacante con pocos privilegios ejecutar comandos CLI específicos que conducen a una Denegación de Servicio. Las acciones repetidas del atacante crearán una condición sostenida de Denegación de Servicio (DoS). Este problema afecta a Juniper Networks: Junos OS: * Todas las versiones anteriores a 20.4R3-S8; * Versiones 21.2 anteriores a 21.2R3-S6; * Versiones 21.3 anteriores a 21.3R3-S5; * Versiones 22.1 anteriores a 22.1R3-S3; * Versiones 22.3 anteriores a 22.3R3; * Versiones 22.4 anteriores a 22.4R3. • https://supportportal.juniper.net/JSA73140 • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •

CVSS: 5.5EPSS: 0%CPEs: 151EXPL: 0

A Stack-based Buffer Overflow vulnerability in the CLI command of Juniper Networks Junos and Junos EVO allows a low privileged attacker to execute a specific CLI commands leading to Denial of Service. Repeated actions by the attacker will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks: Junos OS: * All versions prior to 19.1R3-S10; * 19.2 versions prior to 19.2R3-S7; * 19.3 versions prior to 19.3R3-S8; * 19.4 versions prior to 19.4R3-S12; * 20.2 versions prior to 20.2R3-S8; * 20.4 versions prior to 20.4R3-S8; * 21.2 versions prior to 21.2R3-S6; * 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 22.3R3; * 22.4 versions prior to 22.4R2. Junos OS Evolved: * All versions prior to 20.4R3-S8-EVO; * 21.2 versions prior to 21.2R3-S6-EVO; * 21.3 versions prior to 21.3R3-S5-EVO; * 21.4 versions prior to 21.4R3-S4-EVO; * 22.1 versions prior to 22.1R3-S3-EVO; * 22.2 versions prior to 22.2R3-S1-EVO; * 22.3 versions prior to 22.3R3-EVO; * 22.4 versions prior to 22.4R2-EVO. Una vulnerabilidad de desbordamiento de búfer en el comando CLI de Juniper Networks Junos y Junos EVO permite a un atacante con pocos privilegios ejecutar comandos CLI específicos que conducen a una Denegación de Servicio. Las acciones repetidas del atacante crearán una condición sostenida de Denegación de Servicio (DoS). Este problema afecta a Juniper Networks: Junos OS: * Todas las versiones anteriores a 19.1R3-S10; * Versiones 19.2 anteriores a 19.2R3-S7; * Versiones 19.3 anteriores a 19.3R3-S8; * Versiones 19.4 anteriores a 19.4R3-S12; * Versiones 20.2 anteriores a 20.2R3-S8; * Versiones 20.4 anteriores a 20.4R3-S8; * Versiones 21.2 anteriores a 21.2R3-S6; * 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 22.3R3; * Versiones 22.4 anteriores a 22.4R2. Junos OS Evolved: * Todas las versiones anteriores a 20.4R3-S8-EVO; * Versiones 21.2 anteriores a 21.2R3-S6-EVO; * Versiones 21.3 anteriores a 21.3R3-S5-EVO; * Versiones 21.4 anteriores a 21.4R3-S4-EVO; * Versiones 22.1 anteriores a 22.1R3-S3-EVO; * Versiones 22.2 anteriores a 22.2R3-S1-EVO; * Versiones 22.3 anteriores a 22.3R3-EVO; * Versiones 22.4 anteriores a 22.4R2-EVO. • https://supportportal.juniper.net/JSA73140 • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •