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CVE-2023-29001

Estado: AnalizadaAlta (8.7)—

Contiki-NG is an open-source, cross-platform operating system for IoT devices. The Contiki-NG operating system processes source routing headers (SRH) in its two alternative RPL protocol implementations. The IPv6 implementation uses the results of this processing to determine whether an incoming packet should be forwarded to another host. Because of missing validation of the resulting next-hop address, an uncontrolled recursion may occur in the tcpip_ipv6_output function in the os/net/ipv6/tcpip.c module when receiving a packet with a next-hop address that is a local address.

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Attackers that have the possibility to send IPv6 packets to the Contiki-NG host can therefore trigger deeply nested recursive calls, which can cause a stack overflow. The vulnerability has not been patched in the current release of Contiki-NG, but is expected to be patched in the next release. The problem can be fixed by applying the patch in Contiki-NG pull request #2264. Users are advised to either apply the patch manually or to wait for the next release. There are no known workarounds for this vulnerability.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad de recursión no controlada en procesamiento de cabeceras RPL/IPv6 accesible por red sin autenticación (AV:N/PR:N), causando desbordamiento de pila y denegación de servicio.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Contiki-ng — Contiki-ng

CWE

Referencias

JSON original (NVD)

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      "lang": "en",
      "value": "Contiki-NG is an open-source, cross-platform operating system for IoT devices. The Contiki-NG operating system processes source routing headers (SRH) in its two alternative RPL protocol implementations. The IPv6 implementation uses the results of this processing to determine whether an incoming packet should be forwarded to another host. Because of missing validation of the resulting next-hop address, an uncontrolled recursion may occur in the tcpip_ipv6_output function in the os/net/ipv6/tcpip.c module when receiving a packet with a next-hop address that is a local address. Attackers that have the possibility to send IPv6 packets to the Contiki-NG host can therefore trigger deeply nested recursive calls, which can cause a stack overflow. The vulnerability has not been patched in the current release of Contiki-NG, but is expected to be patched in the next release. The problem can be fixed by applying the patch in Contiki-NG pull request #2264. Users are advised to either apply the patch manually or to wait for the next release. There are no known workarounds for this vulnerability."
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      "value": "Contiki-NG es un sistema operativo multiplataforma de código abierto para dispositivos IoT. El sistema operativo Contiki-NG procesa los encabezados de enrutamiento de origen (SRH) en sus dos implementaciones alternativas del protocolo RPL. La implementación de IPv6 utiliza los resultados de este procesamiento para determinar si un paquete entrante debe reenviarse a otro host. Debido a la falta de validación de la dirección de siguiente salto resultante, puede producirse una recursión descontrolada en la función tcpip_ipv6_output en el módulo os/net/ipv6/tcpip.c al recibir un paquete con una dirección de siguiente salto que es una dirección local. Por lo tanto, los atacantes que tienen la posibilidad de enviar paquetes IPv6 al host Contiki-NG pueden activar llamadas recursivas profundamente anidadas, lo que puede causar un desbordamiento de pila. La vulnerabilidad no se ha corregido en la versión actual de Contiki-NG, pero se espera que se corrija en la próxima versión. El problema se puede solucionar aplicando el parche en la solicitud de incorporación de cambios de Contiki-NG n.° 2264. Se recomienda a los usuarios que apliquen el parche manualmente o que esperen a la próxima versión. No se conocen workarounds para esta vulnerabilidad."
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  "lastModified": "2026-06-17T05:49:09.820",
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