CVE-2024-39515
Junos OS and Junos OS Evolved: With BGP traceoptions enabled, receipt of specifically malformed BGP update causes RPD crash
En resumen
Cuando el registro de rastreo BGP está habilitado, un paquete BGP malformado puede bloquear el daemon de enrutamiento (rpd) en routers Juniper, desconectando la red hasta reinicio manual. Un atacante con acceso a la red puede enviar repetidamente estos paquetes para mantener el router inoperativo.
Detalle técnico
El daemon de protocolo de enrutamiento (rpd) no valida adecuadamente paquetes BGP update cuando traceoptions están habilitadas, permitiendo a un atacante no autenticado en red con sesión BGP establecida enviar un paquete malformado específico que desencadena una condición no controlada, causando crash del rpd y DoS. En algunos casos, rpd falla al reiniciar automáticamente, requiriendo intervención manual mediante comandos CLI.
Resumen generado y traducido por IA a partir de la descripción oficial.
An Improper Validation of Consistency within Input vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker sending a specifically malformed BGP packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.
In some cases, rpd fails to restart requiring a manual restart via the 'restart routing' CLI command.
This issue only affects systems with BGP traceoptions enabled and
requires a BGP session to be already established. Systems without BGP traceoptions enabled are not affected by this issue.
This issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability.
This issue affects:
Junos OS:
* All versions before 21.4R3-S8,
* 22.2 before 22.2R3-S5,
* 22.3 before 22.3R3-S4,
* 22.4 before 22.4R3-S3,
* 23.2 before 23.2R2-S2,
* 23.4 before 23.4R2;
Junos OS Evolved:
* All versions before 21.4R3-S8-EVO,
* 22.2-EVO before 22.2R3-S5-EVO,
* 22.3-EVO before 22.3R3-S4-EVO,
* 22.4-EVO before 22.4R3-S3-EVO,
* 23.2-EVO before 23.2R2-S2-EVO,
* 23.4-EVO before 23.4R2-EVO.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:U