CVSS: 7.8EPSS: 0%CPEs: 15EXPL: 0CVE-2021-0286 – Junos OS Evolved: Specially crafted packets may cause the AFT manager process to crash and restart
https://notcve.org/view.php?id=CVE-2021-0286
A vulnerability in the handling of exceptional conditions in Juniper Networks Junos OS Evolved (EVO) allows an attacker to send specially crafted packets to the device, causing the Advanced Forwarding Toolkit manager (evo-aftmand-bt or evo-aftmand-zx) process to crash and restart, impacting all traffic going through the FPC, resulting in a Denial of Service (DoS). Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. Following messages will be logged prior to the crash: Feb 2 10:14:39 fpc0 evo-aftmand-bt[16263]: [Error] Nexthop: Failed to get fwd nexthop for nexthop:32710470974358 label:1089551617 for session:18 probe:35 Feb 2 10:14:39 fpc0 evo-aftmand-bt[16263]: [Error] Nexthop: Failed to get fwd nexthop for nexthop:19241453497049 label:1089551617 for session:18 probe:37 Feb 2 10:14:39 fpc0 evo-aftmand-bt[16263]: [Error] Nexthop: Failed to get fwd nexthop for nexthop:19241453497049 label:1089551617 for session:18 probe:44 Feb 2 10:14:39 fpc0 evo-aftmand-bt[16263]: [Error] Nexthop: Failed to get fwd nexthop for nexthop:32710470974358 label:1089551617 for session:18 probe:47 Feb 2 10:14:39 fpc0 audit[16263]: ANOM_ABEND auid=4294967295 uid=0 gid=0 ses=4294967295 pid=16263 comm="EvoAftManBt-mai" exe="/usr/sbin/evo-aftmand-bt" sig=11 Feb 2 10:14:39 fpc0 kernel: audit: type=1701 audit(1612260879.272:17): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=16263 comm="EvoAftManBt-mai" exe="/usr/sbin/evo-aftmand-bt" sig=1 This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-EVO; 21.1 versions prior to 21.1R2-EVO. Una vulnerabilidad en el manejo de condiciones excepcionales en Juniper Networks Junos OS Evolved (EVO) permite a un atacante enviar paquetes especialmente diseñados al dispositivo, causando al proceso de Advanced Forwarding Toolkit manager (evo-aftmand-bt o evo-aftmand-zx) bloquearse y reiniciarse, impactando todo el tráfico que pasa por el FPC, resultando en una Denegación de Servicio (DoS). Una recepción continua y procesamiento de estos paquetes creará una condición de Denegación de Servicio (DoS) sostenida. • https://kb.juniper.net/JSA11188 • CWE-703: Improper Check or Handling of Exceptional Conditions CWE-754: Improper Check for Unusual or Exceptional Conditions •
CVSS: 7.5EPSS: 0%CPEs: 67EXPL: 0CVE-2021-0264 – Junos OS and Junos OS Evolved: MX Series with MPC10/MPC11, PTX10003, PTX10008: Line card may crash and restart when traffic is hitting a firewall filter having a term with syslog action configured
https://notcve.org/view.php?id=CVE-2021-0264
A vulnerability in the processing of traffic matching a firewall filter containing a syslog action in Juniper Networks Junos OS on MX Series with MPC10/MPC11 cards installed, PTX10003 and PTX10008 Series devices, will cause the line card to crash and restart, creating a Denial of Service (DoS). Continued receipt and processing of packets matching the firewall filter can create a sustained Denial of Service (DoS) condition. When traffic hits the firewall filter, configured on lo0 or any physical interface on the line card, containing a term with a syslog action (e.g. 'term <name> then syslog'), the affected line card will crash and restart, impacting traffic processing through the ports of the line card. This issue only affects MX Series routers with MPC10 or MPC11 line cards, and PTX10003 or PTX10008 Series packet transport routers. • https://kb.juniper.net/JSA11155 https://kb.juniper.net/TSB17931 • CWE-703: Improper Check or Handling of Exceptional Conditions CWE-755: Improper Handling of Exceptional Conditions •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2021-0239 – Junos OS Evolved: Denial of Service due to receipt of specific genuine layer 2 frames.
https://notcve.org/view.php?id=CVE-2021-0239
In Juniper Networks Junos OS Evolved, receipt of a stream of specific genuine Layer 2 frames may cause the Advanced Forwarding Toolkit (AFT) manager process (Evo-aftmand), responsible for handling Route, Class-of-Service (CoS), Firewall operations within the packet forwarding engine (PFE) to crash and restart, leading to a Denial of Service (DoS) condition. By continuously sending this specific stream of genuine Layer 2 frames, an attacker can repeatedly crash the PFE, causing a sustained Denial of Service (DoS). This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R1-EVO. This issue does not affect Junos OS versions. En Juniper Networks, Junos OS Evolved, la recepción de un flujo de tramas de capa 2 genuinas específicas puede causar que el proceso de gestión Advanced Forwarding Toolkit (AFT) (Evo-aftmand), responsable de gestionar las operaciones de ruta, clase de servicio (CoS) y cortafuegos. dentro del packet forwarding engine (PFE) para bloquearse y reiniciarse, conllevando a una condición de Denegación de Servicio (DoS). • https://kb.juniper.net/JSA11134 • CWE-754: Improper Check for Unusual or Exceptional Conditions •