CVE-2024-6437

On affected platforms running Arista EOS with one of the following features configured to redirect IP traffic to a next hop: policy-based routing (PBR), BGP Flowspec, or interface traffic policy -- certain IP traffic such as IPv4 packets with IP options may bypass the feature's set nexthop action and be slow-path forwarded (FIB routed) by the kernel as the packets are trapped to the CPU instead of following the redirect action's destination.

CVSS v3 5.8 MEDIUM

5.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://www.arista.com/en/support/advisories-notices/security-advisory/20689-security-advisory-0108

Configurations

No configuration.

History

No history.

Information

Published : 2025-01-10 20:15

Updated : 2026-06-17 08:18

NVD link : CVE-2024-6437

Mitre link : CVE-2024-6437

CVE.ORG link : CVE-2024-6437

JSON object : View

Products Affected

No product.

CWE

No CWE.

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Interface Traffic Policy", "versions": [{"status": "affected", "version": "4.32.0F", "versionType": "custom", "lessThanOrEqual": "4.32.1F"}, {"status": "affected", "version": "4.31.0M", "versionType": "custom", "lessThanOrEqual": "4.31.4M"}, {"status": "affected", "version": "4.30.0M", "versionType": "custom", "lessThanOrEqual": "4.30.7M"}, {"status": "affected", "version": "4.29.0M", "versionType": "custom", "lessThanOrEqual": "4.29.9M"}, {"status": "affected", "version": "4.28.0M", "versionType": "custom", "lessThanOrEqual": "4.28.11M"}, {"status": "affected", "version": "4.27.2F", "versionType": "custom", "lessThanOrEqual": "4.27.12F"}], "defaultStatus": "unaffected"}]}], "published": "2025-01-10T20:15:30.817", "references": [{"url": "https://www.arista.com/en/support/advisories-notices/security-advisory/20689-security-advisory-0108", "source": "psirt@arista.com"}], "vulnStatus": "Deferred", "descriptions": [{"lang": "en", "value": "On affected platforms running Arista EOS with one of the following features configured to redirect IP traffic to a next hop: policy-based routing (PBR), BGP Flowspec, or interface traffic policy -- certain IP traffic such as IPv4 packets with IP options may bypass the feature's set nexthop\u00a0action and be slow-path forwarded (FIB routed) by the kernel as the packets are trapped to the CPU instead of following the redirect action's destination."}, {"lang": "es", "value": "En las plataformas afectadas que ejecutan Arista EOS con una de las siguientes funciones configuradas para redirigir el tr\u00e1fico IP a un siguiente salto: enrutamiento basado en pol\u00edticas (PBR), BGP Flowspec o pol\u00edtica de tr\u00e1fico de interfaz, cierto tr\u00e1fico IP, como los paquetes IPv4 con opciones IP, pueden omitir la acci\u00f3n de siguiente salto establecida por la funci\u00f3n y ser reenviados por ruta lenta (enrutados FIB) por el kernel a medida que los paquetes quedan atrapados en la CPU en lugar de seguir el destino de la acci\u00f3n de redirecci\u00f3n."}], "lastModified": "2026-06-17T08:18:00.737", "sourceIdentifier": "psirt@arista.com"}