CVSS: 5.3EPSS: 0%CPEs: 260EXPL: 0CVE-2021-0229 – Junos OS: Receipt of specific packets could lead to Denial of Service in MQTT Server
https://notcve.org/view.php?id=CVE-2021-0229
An uncontrolled resource consumption vulnerability in Message Queue Telemetry Transport (MQTT) server of Juniper Networks Junos OS allows an attacker to cause MQTT server to crash and restart leading to a Denial of Service (DoS) by sending a stream of specific packets. A Juniper Extension Toolkit (JET) application designed with a listening port uses the Message Queue Telemetry Transport (MQTT) protocol to connect to a mosquitto broker that is running on Junos OS to subscribe for events. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 16.1R1 and later versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R2-S13, 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S7; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R3-S5; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 16.1R1. • https://kb.juniper.net/JSA11124 • CWE-400: Uncontrolled Resource Consumption •
CVSS: 6.5EPSS: 0%CPEs: 241EXPL: 0CVE-2021-0228 – Junos OS: MX Series: DDoS LACP violation upon receipt of specific layer 2 frames in EVPN-VXLAN deployment
https://notcve.org/view.php?id=CVE-2021-0228
An improper check for unusual or exceptional conditions vulnerability in Juniper Networks MX Series platforms with Trio-based MPC (Modular Port Concentrator) deployed in (Ethernet VPN) EVPN-(Virtual Extensible LAN) VXLAN configuration, may allow an attacker sending specific Layer 2 traffic to cause Distributed Denial of Service (DDoS) protection to trigger unexpectedly, resulting in traffic impact. Continued receipt and processing of this specific Layer 2 frames will sustain the Denial of Service (DoS) condition. An indication of compromise is to check DDOS LACP violations: user@device> show ddos-protection protocols statistics brief | match lacp This issue only affects the MX Series platforms with Trio-based MPC. No other products or platforms are affected. This issue affects: Juniper Networks Junos OS on MX Series: 15.1 versions prior to 15.1R7-S9; 17.3 versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S8; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R1-S6; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2, 20.1R3; 20.2 versions prior to 20.2R2-S1, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2; Una vulnerabilidad comprobación inapropiada para condiciones inusuales o excepcionales en las plataformas Juniper Networks MX Series con MPC (Modular Port Concentrator) basado en Trio implementado en (Ethernet VPN) EVPN- (Virtual Extensible LAN) configuración VXLAN, puede permitir a un atacante enviar tráfico específico de Capa 2 para causar que la protección de Denegación de Servicio distribuida (DDoS) se active inesperadamente, resultando en un impacto en el tráfico. • https://kb.juniper.net/JSA11123 • CWE-754: Improper Check for Unusual or Exceptional Conditions •
CVSS: 7.5EPSS: 0%CPEs: 149EXPL: 0CVE-2021-0227 – Junos OS: SRX Series: Denial of Service in J-Web upon receipt of crafted HTTP packets
https://notcve.org/view.php?id=CVE-2021-0227
An improper restriction of operations within the bounds of a memory buffer vulnerability in Juniper Networks Junos OS J-Web on SRX Series devices allows an attacker to cause Denial of Service (DoS) by sending certain crafted HTTP packets. Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. When this issue occurs, web-management, NTP daemon (ntpd) and Layer 2 Control Protocol process (L2CPD) daemons might crash. This issue affects Juniper Networks Junos OS on SRX Series: 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S11, 17.4R3-S2; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R3; 19.3 versions prior to 19.3R3; 19.4 versions prior to 19.4R2-S1, 19.4R3; 20.1 versions prior to 20.1R1-S2, 20.1R2; Una vulnerabilidad de restricción inapropiada de operaciones dentro de los límites de un búfer de memoria en Juniper Networks Junos OS J-Web en dispositivos de la serie SRX permite a un atacante causar una Denegación de Servicio (DoS) mediante el envío de determinados paquetes HTTP diseñados. La recepción y el procesamiento continuo de estos paquetes crearán una condición sostenida de Denegación de Servicio (DoS). • https://kb.juniper.net/JSA11122 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 7.5EPSS: 0%CPEs: 10EXPL: 0CVE-2021-0226 – Junos OS Evolved: The IPv6 BGP session will flap due to receipt of a specific IPv6 packet
https://notcve.org/view.php?id=CVE-2021-0226
On Juniper Networks Junos OS Evolved devices, receipt of a specific IPv6 packet may cause an established IPv6 BGP session to terminate, creating a Denial of Service (DoS) condition. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue does not affect IPv4 BGP sessions. This issue affects IBGP or EBGP peer sessions with IPv6. This issue affects: Juniper Networks Junos OS Evolved: 19.4 versions prior to 19.4R2-S3-EVO; 20.1 versions prior to 20.1R2-S3-EVO; 20.2 versions prior to 20.2R2-S1-EVO; 20.3 versions prior to 20.3R2-EVO. • https://kb.juniper.net/JSA11121 • CWE-665: Improper Initialization •
CVSS: 5.8EPSS: 0%CPEs: 12EXPL: 0CVE-2021-0225 – Junos OS Evolved: Stateless IP firewall filter does not work as expected
https://notcve.org/view.php?id=CVE-2021-0225
An Improper Check for Unusual or Exceptional Conditions in Juniper Networks Junos OS Evolved may cause the stateless firewall filter configuration which uses the action 'policer' in certain combinations with other options to not take effect. An administrator can use the following CLI command to see the failures with filter configuration: user@device> show log kfirewall-agent.log | match ERROR Jul 23 14:16:03 ERROR: filter not supported This issue affects Juniper Networks Junos OS Evolved: Versions 19.1R1-EVO and above prior to 20.3R1-S2-EVO, 20.3R2-EVO. This issue does not affect Juniper Networks Junos OS. Una Comprobación Inapropiada de Condiciones Inusuales o Excepcionales en Juniper Networks Junos OS Evolved, puede causar que la configuración del filtro de firewall sin estado que usa la acción "policer" en determinadas combinaciones con otras opciones no surta efecto. Un administrador puede usar el siguiente comando CLI para visualizar los fallos con la configuración del filtro: user@device) show log kfirewall-agent.log | match ERROR Jul 23 14:16:03 ERROR: filter not supported. • https://kb.juniper.net/JSA11120 • CWE-754: Improper Check for Unusual or Exceptional Conditions •