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Cisco NX-OS Software Link Layer Discovery Protocol Denial of Service Vulnerability
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
A vulnerability in the Link Layer Discovery Protocol (LLDP) code of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to crash an affected device. The vulnerability is due to an error in parsing a malformed LLDP packet. An attacker could exploit this vulnerability by sending a crafted, malformed LLDP packet to an interface enabled for LLDP packet processing. Cisco has confirmed the vulnerability and released software updates. To exploit this vulnerability, an attacker must be on the same broadcast or collision domain as the targeted device. This access requirement reduces the likelihood of a successful exploit. Cisco indicates through the CVSS score that functional exploit code exists. However, the code is not known to be publicly available.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
See the referenced vendor advisory for a solution.