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computer vulnerability CVE-2017-3804

Cisco Nexus: denial of service via IS-IS

Synthesis of the vulnerability

An attacker can send malicious IS-IS packets to Cisco Nexus, in order to trigger a denial of service.
Impacted products: Nexus by Cisco, NX-OS.
Severity: 2/4.
Creation date: 19/01/2017.
Identifiers: cisco-sa-20170118-nexus, CSCvc45002, CVE-2017-3804, VIGILANCE-VUL-21625.

Description of the vulnerability

The Cisco Nexus product has a service to manage received IS-IS packets.

However, when malicious IS-IS packets are received, a fatal error occurs.

An attacker can therefore send malicious IS-IS packets to Cisco Nexus, in order to trigger a denial of service.
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