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

SYNTHESIS OF THE VULNERABILITY

An attacker can send a malicious DHCPv6 packet to Cisco IOS or IOS
XE, in order to trigger a denial of service.

– Impacted products: Cisco Catalyst, IOS, IOS XE, Cisco Router xx00
Series
– Severity: 2/4
– Creation date: 25/09/2014

DESCRIPTION OF THE VULNERABILITY

The Cisco IOS or IOS XE product has a service to manage DHCPv6
packets.

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

An attacker can therefore send a malicious DHCPv6 packet to Cisco
IOS or IOS XE, in order to trigger a denial of service.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/Cisco-IOS-XE-denial-of-service-via-DHCPv6-15402