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Vigil@nce - Cisco NX-OS: denial of service via DHCPv4

December 2016 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/offer

SYNTHESIS OF THE VULNERABILITY

An attacker can send a malicious DHCPv4 packet to Cisco NX-OS, in
order to trigger a denial of service.

Impacted products: Nexus by Cisco, NX-OS.

Severity: 2/4.

Creation date: 06/10/2016.

DESCRIPTION OF THE VULNERABILITY

The Cisco NX-OS product has a service to manage received DHCPv4
packets.

However, when a malicious packet is received, a fatal error occurs.

An attacker can therefore send a malicious DHCPv4 packet to Cisco
NX-OS, in order to trigger a denial of service.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/Cisco-NX-OS-denial-of-service-via-DHCPv4-20786


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