Vigil@nce - Cisco Nexus: denial of service via Cisco Discovery Protocol
September 2016 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An unauthenticated attacker can craft and send a malicious CDP
packet to Cisco Nexus, in order to trigger a denial of service.
– Impacted products: Nexus by Cisco, NX-OS.
– Severity: 2/4.
– Creation date: 28/07/2016.
DESCRIPTION OF THE VULNERABILITY
The Cisco Nexus uses Cisco Discovery Protocol (CDP).
However, an insufficient input validation of CDP packets can
generate an out-of-bound memory access, and crashes the server.
An unauthenticated attacker can therefore craft and send a
malicious CDP packet to Cisco Nexus, in order to trigger a denial
of service.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/Cisco-Nexus-denial-of-service-via-Cisco-Discovery-Protocol-20234