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.
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
| Version | Description | Section | Status | Date |
| 1.0 | Initial Release | NA | Final | 2015-Jun-19 |
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